Ignore management controller when generating openapi spec

Delay starting service until after network is online

.ci/azure-pipelines-abi.yml

@@ -7,7 +7,7 @@ parameters:
   default: "ubuntu-latest"
 - name: DotNetSdkVersion
   type: string
-  default: 5.0.100
+  default: 5.0.302
 
 jobs:
   - job: CompatibilityCheck

.ci/azure-pipelines-api-client.yml

@@ -1,58 +0,0 @@
-parameters:
-  - name: LinuxImage
-    type: string
-    default: "ubuntu-latest"
-  - name: GeneratorVersion
-    type: string
-    default: "5.0.0-beta2"
-
-jobs:
-- job: GenerateApiClients
-  displayName: 'Generate Api Clients'
-  condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
-  dependsOn: Test
-
-  pool:
-    vmImage: "${{ parameters.LinuxImage }}"
-
-  steps:
-    - task: DownloadPipelineArtifact@2
-      displayName: 'Download OpenAPI Spec Artifact'
-      inputs:
-        source: 'current'
-        artifact: "OpenAPI Spec"
-        path: "$(System.ArtifactsDirectory)/openapispec"
-        runVersion: "latest"
-
-    - task: CmdLine@2
-      displayName: 'Download OpenApi Generator'
-      inputs:
-        script: "wget https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/${{ parameters.GeneratorVersion }}/openapi-generator-cli-${{ parameters.GeneratorVersion }}.jar -O openapi-generator-cli.jar"
-
-## Authenticate with npm registry
-    - task: npmAuthenticate@0
-      inputs:
-        workingFile: ./.npmrc
-        customEndpoint: 'jellyfin-bot for NPM'
-
-## Generate npm api client
-    - task: CmdLine@2
-      displayName: 'Build stable typescript axios client'
-      inputs:
-        script: "bash ./apiclient/templates/typescript/axios/generate.sh $(System.ArtifactsDirectory)"
-
-## Run npm install
-    - task: Npm@1
-      displayName: 'Install npm dependencies'
-      inputs:
-        command: install
-        workingDir: ./apiclient/generated/typescript/axios
-
-## Publish npm packages
-    - task: Npm@1
-      displayName: 'Publish stable typescript axios client'
-      inputs:
-        command: publish
-        publishRegistry: useExternalRegistry
-        publishEndpoint: 'jellyfin-bot for NPM'
-        workingDir: ./apiclient/generated/typescript/axios

.ci/azure-pipelines-main.yml

@@ -1,7 +1,7 @@
 parameters:
   LinuxImage: 'ubuntu-latest'
   RestoreBuildProjects: 'Jellyfin.Server/Jellyfin.Server.csproj'
-  DotNetSdkVersion: 5.0.100
+  DotNetSdkVersion: 5.0.302
 
 jobs:
   - job: Build

.ci/azure-pipelines-package.yml

@@ -22,6 +22,12 @@ jobs:
         BuildConfiguration: ubuntu.armhf
       Linux.amd64:
         BuildConfiguration: linux.amd64
+      Linux.amd64-musl:
+        BuildConfiguration: linux.amd64-musl
+      Linux.arm64:
+        BuildConfiguration: linux.arm64
+      Linux.armhf:
+        BuildConfiguration: linux.armhf
       Windows.amd64:
         BuildConfiguration: windows.amd64
       MacOS:
@@ -154,7 +160,6 @@ jobs:
   dependsOn:
   - BuildPackage
   - BuildDocker
-  condition: and(succeeded('BuildPackage'), succeeded('BuildDocker'))
 
   pool:
     vmImage: 'ubuntu-latest'
@@ -180,13 +185,14 @@ jobs:
 
 - job: PublishNuget
   displayName: 'Publish NuGet packages'
-  dependsOn:
-  - BuildPackage
-  condition: succeeded('BuildPackage')
 
   pool:
     vmImage: 'ubuntu-latest'
 
+  variables:
+  - name: JellyfinVersion
+    value: $[replace(variables['Build.SourceBranch'],'refs/tags/v','')]
+
   steps:
   - task: UseDotNet@2
     displayName: 'Use .NET 5.0 sdk'
@@ -198,12 +204,19 @@ jobs:
     displayName: 'Build Stable Nuget packages'
     condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
     inputs:
-      command: 'pack'
-      packagesToPack: 'Jellyfin.Data/Jellyfin.Data.csproj;MediaBrowser.Common/MediaBrowser.Common.csproj;MediaBrowser.Controller/MediaBrowser.Controller.csproj;MediaBrowser.Model/MediaBrowser.Model.csproj;Emby.Naming/Emby.Naming.csproj'
-      versioningScheme: 'off'
+      command: 'custom'
+      projects: |
+        Jellyfin.Data/Jellyfin.Data.csproj
+        MediaBrowser.Common/MediaBrowser.Common.csproj
+        MediaBrowser.Controller/MediaBrowser.Controller.csproj
+        MediaBrowser.Model/MediaBrowser.Model.csproj
+        Emby.Naming/Emby.Naming.csproj
+      custom: 'pack'
+      arguments: -o $(Build.ArtifactStagingDirectory) -p:Version=$(JellyfinVersion)
 
   - task: DotNetCoreCLI@2
     displayName: 'Build Unstable Nuget packages'
+    condition: startsWith(variables['Build.SourceBranch'], 'refs/heads/master')
     inputs:
       command: 'custom'
       projects: |
@@ -221,18 +234,12 @@ jobs:
       pathToPublish: $(Build.ArtifactStagingDirectory)
       artifactName: Jellyfin Nuget Packages
 
-  - task: NuGetAuthenticate@0
-    displayName: 'Authenticate to stable Nuget feed'
-    condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
-    inputs:
-      nuGetServiceConnections: 'NugetOrg'
-
   - task: NuGetCommand@2
     displayName: 'Push Nuget packages to stable feed'
     condition: startsWith(variables['Build.SourceBranch'], 'refs/tags/v')
     inputs:
       command: 'push'
-      packagesToPush: '$(Build.ArtifactStagingDirectory)/**/*.nupkg;$(Build.ArtifactStagingDirectory)/**/*.snupkg'
+      packagesToPush: '$(Build.ArtifactStagingDirectory)/**/*.nupkg'
       nuGetFeedType: 'external'
       publishFeedCredentials: 'NugetOrg'
       allowPackageConflicts: true # This ignores an error if the version already exists

.ci/azure-pipelines-test.yml

@@ -10,7 +10,7 @@ parameters:
   default: "tests/**/*Tests.csproj"
 - name: DotNetSdkVersion
   type: string
-  default: 5.0.100
+  default: 5.0.302
 
 jobs:
   - job: Test
@@ -94,5 +94,5 @@ jobs:
         displayName: 'Publish OpenAPI Artifact'
         condition: and(succeeded(), eq(variables['Agent.OS'], 'Linux'))
         inputs:
-          targetPath: "tests/Jellyfin.Api.Tests/bin/Release/net5.0/openapi.json"
+          targetPath: "tests/Jellyfin.Server.Integration.Tests/bin/Release/net5.0/openapi.json"
           artifactName: 'OpenAPI Spec'

.ci/azure-pipelines.yml

@@ -6,7 +6,7 @@ variables:
 - name: RestoreBuildProjects
   value: 'Jellyfin.Server/Jellyfin.Server.csproj'
 - name: DotNetSdkVersion
-  value: 5.0.100
+  value: 5.0.302
 
 pr:
   autoCancel: true
@@ -61,6 +61,3 @@ jobs:
 
 - ${{ if or(startsWith(variables['Build.SourceBranch'], 'refs/tags/v'), startsWith(variables['Build.SourceBranch'], 'refs/heads/master')) }}:
   - template: azure-pipelines-package.yml
-
-- ${{ if or(startsWith(variables['Build.SourceBranch'], 'refs/tags/v'), startsWith(variables['Build.SourceBranch'], 'refs/heads/master')) }}:
-  - template: azure-pipelines-api-client.yml

.drone.yml

@@ -1,30 +0,0 @@
----
-kind: pipeline
-name: build-debug
-
-steps:
-- name: submodules
-  image: docker:git
-  commands:
-    - git submodule update --init --recursive
-
-- name: build
-  image: microsoft/dotnet:2-sdk
-  commands:
-    - dotnet publish "Jellyfin.Server" --configuration Debug --output "../ci/ci-debug"
-
----
-kind: pipeline
-name: build-release
-
-steps:
-- name: submodules
-  image: docker:git
-  commands:
-    - git submodule update --init --recursive
-
-- name: build
-  image: microsoft/dotnet:2-sdk
-  commands:
-    - dotnet publish "Jellyfin.Server" --configuration Release --output "../ci/ci-release"
-

.github/CODEOWNERS

@@ -1,3 +1,4 @@
 # Joshua must review all changes to deployment and build.sh
+.ci/*           @joshuaboniface
 deployment/*    @joshuaboniface
 build.sh        @joshuaboniface

.github/ISSUE_TEMPLATE/bug_report.md

@@ -17,6 +17,7 @@ assignees: ''
  - Browser: [e.g. Firefox 72, Chrome 80, Safari 13]
  - Jellyfin Version: [e.g. 10.4.3, nightly 20191231]
  - Playback: [Direct Play, Remux, Direct Stream, Transcode] 
+ - Hardware Acceleration: [e.g. none, VAAPI, NVENC, etc.]
  - Installed Plugins: [e.g. none, Fanart, Anime, etc.]
  - Reverse Proxy: [e.g. none, nginx, apache, etc.]
  - Base URL: [e.g. none, yes: /example]
@@ -33,7 +34,13 @@ assignees: ''
 **Expected behavior**
 <!-- A clear and concise description of what you expected to happen. -->
 
-**Logs**
+**Server Logs**
+<!-- Please paste any log errors. -->
+
+**FFmpeg Logs**
+<!-- Please paste any log errors. -->
+
+**Browser Console Logs**
 <!-- Please paste any log errors. -->
 
 **Screenshots**

.github/dependabot.yml

@@ -6,4 +6,10 @@ updates:
     interval: weekly
     time: '12:00'
   open-pull-requests-limit: 10
-  
+
+- package-ecosystem: github-actions
+  directory: '/'
+  schedule:
+    interval: weekly
+    time: '12:00'
+  open-pull-requests-limit: 10

.github/stale.yml

@@ -17,9 +17,13 @@ staleLabel: stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue has gone 120 days without comment. To avoid abandoned issues, it will be closed in 21 days if there are no new comments.
-  
+
   If you're the original submitter of this issue, please comment confirming if this issue still affects you in the latest release or nightlies, or close the issue if it has been fixed. If you're another user also affected by this bug, please comment confirming so. Either action will remove the stale label.
 
   This bot exists to prevent issues from becoming stale and forgotten. Jellyfin is always moving forward, and bugs are often fixed as side effects of other changes. We therefore ask that bug report authors remain vigilant about their issues to ensure they are closed if fixed, or re-confirmed - perhaps with fresh logs or reproduction examples - regularly. If you have any questions you can reach us on [Matrix or Social Media](https://docs.jellyfin.org/general/getting-help.html).
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: false
+
+# Disable automatic closing of pull requests
+pulls:
+  daysUntilClose: false

.github/workflows/automation.yml

@@ -0,0 +1,76 @@
+name: Automation
+
+on:
+  push:
+    branches:
+      - master
+  pull_request_target:
+  issue_comment:
+
+jobs:
+  label:
+    name: Labeling
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'jellyfin/jellyfin' }}
+    steps:
+      - name: Apply label
+        uses: eps1lon/actions-label-merge-conflict@v2.0.1
+        if: ${{ github.event_name == 'push' || github.event_name == 'pull_request_target'}}
+        with:
+          dirtyLabel: 'merge conflict'
+          repoToken: ${{ secrets.JF_BOT_TOKEN }}
+
+  project:
+    name: Project board
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'jellyfin/jellyfin' }}
+    steps:
+      - name: Remove from 'Current Release' project
+        uses: alex-page/github-project-automation-plus@v0.8.1
+        if: (github.event.pull_request || github.event.issue.pull_request) && !contains(github.event.*.labels.*.name, 'stable backport')
+        continue-on-error: true
+        with:
+          project: Current Release
+          action: delete
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}
+
+      - name: Add to 'Release Next' project
+        uses: alex-page/github-project-automation-plus@v0.8.1
+        if: (github.event.pull_request || github.event.issue.pull_request) && github.event.action == 'opened'
+        continue-on-error: true
+        with:
+          project: Release Next
+          column: In progress
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}
+
+      - name: Add to 'Current Release' project
+        uses: alex-page/github-project-automation-plus@v0.8.1
+        if: (github.event.pull_request || github.event.issue.pull_request) && !contains(github.event.*.labels.*.name, 'stable backport')
+        continue-on-error: true
+        with:
+          project: Current Release
+          column: In progress
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}
+
+      - name: Check number of comments from the team member
+        if: github.event.issue.pull_request == '' && github.event.comment.author_association == 'MEMBER'
+        id: member_comments
+        run: echo "::set-output name=number::$(curl -s ${{ github.event.issue.comments_url }} | jq '.[] | select(.author_association == "MEMBER") | .author_association' | wc -l)"
+
+      - name: Move issue to needs triage
+        uses: alex-page/github-project-automation-plus@v0.8.1
+        if: github.event.issue.pull_request == '' && github.event.comment.author_association == 'MEMBER' && steps.member_comments.outputs.number <= 1
+        continue-on-error: true
+        with:
+          project: Issue Triage for Main Repo
+          column: Needs triage
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}
+
+      - name: Add issue to triage project
+        uses: alex-page/github-project-automation-plus@v0.8.1
+        if: github.event.issue.pull_request == '' && github.event.action == 'opened'
+        continue-on-error: true
+        with:
+          project: Issue Triage for Main Repo
+          column: Pending response
+          repo-token: ${{ secrets.JF_BOT_TOKEN }}

.github/workflows/codeql-analysis.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '5.0.100'
+        dotnet-version: '5.0.x'
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v1
       with:

.github/workflows/commands.yml

@@ -0,0 +1,119 @@
+name: Commands
+on:
+  issue_comment:
+    types:
+      - created
+      - edited
+  pull_request_target:
+    types:
+      - labeled
+      - synchronize
+
+jobs:
+  rebase:
+    name: Rebase
+    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '@jellyfin-bot rebase') && github.event.comment.author_association == 'MEMBER'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify as seen
+        uses: peter-evans/create-or-update-comment@v1.4.5
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          comment-id: ${{ github.event.comment.id }}
+          reactions: '+1'
+
+      - name: Checkout the latest code
+        uses: actions/checkout@v2
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          fetch-depth: 0
+
+      - name: Automatic Rebase
+        uses: cirrus-actions/rebase@1.4
+        env:
+          GITHUB_TOKEN: ${{ secrets.JF_BOT_TOKEN }}
+
+  check-backport:
+    name: Check Backport
+    if: ${{ ( github.event.issue.pull_request && contains(github.event.comment.body, '@jellyfin-bot check backport') ) || github.event.label.name == 'stable backport' || contains(github.event.pull_request.labels.*.name, 'stable backport' ) }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify as seen
+        uses: peter-evans/create-or-update-comment@v1.4.5
+        if: ${{ github.event.comment != null }}
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          comment-id: ${{ github.event.comment.id }}
+          reactions: eyes
+
+      - name: Checkout the latest code
+        uses: actions/checkout@v2
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          fetch-depth: 0
+
+      - name: Notify as running
+        id: comment_running
+        uses: peter-evans/create-or-update-comment@v1.4.5
+        if: ${{ github.event.comment != null }}
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          issue-number: ${{ github.event.issue.number }}
+          body: |
+            Running backport tests...
+
+      - name: Perform test backport
+        id: run_tests
+        run: |
+          set +o errexit
+          git config --global user.name "Jellyfin Bot"
+          git config --global user.email "team@jellyfin.org"
+          CURRENT_BRANCH="origin/${GITHUB_HEAD_REF}"
+          git checkout master
+          git merge --no-ff ${CURRENT_BRANCH}
+          MERGE_COMMIT_HASH=$( git log -q -1 | head -1 | awk '{ print $2 }' )
+          git fetch --all
+          CURRENT_STABLE=$( git branch -r | grep 'origin/release' | sort -rV | head -1 | awk -F '/' '{ print $NF }' )
+          stable_branch="Current stable release branch: ${CURRENT_STABLE}"
+          echo ${stable_branch}
+          echo ::set-output name=branch::${stable_branch}
+          git checkout -t origin/${CURRENT_STABLE} -b ${CURRENT_STABLE}
+          git cherry-pick -sx -m1 ${MERGE_COMMIT_HASH} &>output.txt
+          retcode=$?
+          cat output.txt | grep -v 'hint:'
+          output="$( grep -v 'hint:'  output.txt )"
+          output="${output//'%'/'%25'}"
+          output="${output//$'\n'/'%0A'}"
+          output="${output//$'\r'/'%0D'}" 
+          echo ::set-output name=output::$output
+          exit ${retcode}
+
+      - name: Notify with result success
+        uses: peter-evans/create-or-update-comment@v1.4.5
+        if: ${{ github.event.comment != null && success() }}
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          comment-id: ${{ steps.comment_running.outputs.comment-id }}
+          body: |
+            ${{ steps.run_tests.outputs.branch }}
+            Output from `git cherry-pick`:
+
+            ---
+
+            ${{ steps.run_tests.outputs.output }}
+          reactions: hooray
+
+      - name: Notify with result failure
+        uses: peter-evans/create-or-update-comment@v1.4.5
+        if: ${{ github.event.comment != null && failure() }}
+        with:
+          token: ${{ secrets.JF_BOT_TOKEN }}
+          comment-id: ${{ steps.comment_running.outputs.comment-id }}
+          body: |
+            ${{ steps.run_tests.outputs.branch }}
+            Output from `git cherry-pick`:
+
+            ---
+
+            ${{ steps.run_tests.outputs.output }}
+          reactions: confused

.gitignore

@@ -268,6 +268,7 @@ doc/
 # Deployment artifacts
 dist
 *.exe
+*.dll
 
 # BenchmarkDotNet artifacts
 BenchmarkDotNet.Artifacts

CONTRIBUTORS.md

@@ -17,6 +17,7 @@
  - [bugfixin](https://github.com/bugfixin)
  - [chaosinnovator](https://github.com/chaosinnovator)
  - [ckcr4lyf](https://github.com/ckcr4lyf)
+ - [cocool97](https://github.com/cocool97)
  - [ConfusedPolarBear](https://github.com/ConfusedPolarBear)
  - [crankdoofus](https://github.com/crankdoofus)
  - [crobibero](https://github.com/crobibero)
@@ -49,6 +50,7 @@
  - [h1nk](https://github.com/h1nk)
  - [hawken93](https://github.com/hawken93)
  - [HelloWorld017](https://github.com/HelloWorld017)
+ - [ikomhoog](https://github.com/ikomhoog)
  - [jftuga](https://github.com/jftuga)
  - [joern-h](https://github.com/joern-h)
  - [joshuaboniface](https://github.com/joshuaboniface)
@@ -68,6 +70,7 @@
  - [marius-luca-87](https://github.com/marius-luca-87)
  - [mark-monteiro](https://github.com/mark-monteiro)
  - [Matt07211](https://github.com/Matt07211)
+ - [Maxr1998](https://github.com/Maxr1998)
  - [mcarlton00](https://github.com/mcarlton00)
  - [mitchfizz05](https://github.com/mitchfizz05)
  - [MrTimscampi](https://github.com/MrTimscampi)
@@ -80,6 +83,7 @@
  - [nvllsvm](https://github.com/nvllsvm)
  - [nyanmisaka](https://github.com/nyanmisaka)
  - [OancaAndrei](https://github.com/OancaAndrei)
+ - [obradovichv](https://github.com/obradovichv)
  - [oddstr13](https://github.com/oddstr13)
  - [orryverducci](https://github.com/orryverducci)
  - [petermcneil](https://github.com/petermcneil)
@@ -103,10 +107,11 @@
  - [shemanaev](https://github.com/shemanaev)
  - [skaro13](https://github.com/skaro13)
  - [sl1288](https://github.com/sl1288)
+ - [Smith00101010](https://github.com/Smith00101010)
  - [sorinyo2004](https://github.com/sorinyo2004)
  - [sparky8251](https://github.com/sparky8251)
  - [spookbits](https://github.com/spookbits)
- - [ssenart] (https://github.com/ssenart)
+ - [ssenart](https://github.com/ssenart)
  - [stanionascu](https://github.com/stanionascu)
  - [stevehayles](https://github.com/stevehayles)
  - [SuperSandro2000](https://github.com/SuperSandro2000)
@@ -141,6 +146,8 @@
  - [Pusta](https://github.com/pusta)
  - [nielsvanvelzen](https://github.com/nielsvanvelzen)
  - [skyfrk](https://github.com/skyfrk)
+ - [ianjazz246](https://github.com/ianjazz246)
+ - [peterspenler](https://github.com/peterspenler)
 
 # Emby Contributors
 
@@ -205,3 +212,4 @@
  - [Tim Hobbs](https://github.com/timhobbs)
  - [SvenVandenbrande](https://github.com/SvenVandenbrande)
  - [olsh](https://github.com/olsh)
+ - [gnuyent](https://github.com/gnuyent)

Directory.Build.props

@@ -0,0 +1,14 @@
+<Project>
+  <!-- Sets defaults for all projects in the repo -->
+
+  <PropertyGroup>
+    <Nullable>enable</Nullable>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)/jellyfin.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <AnalysisMode>AllEnabledByDefault</AnalysisMode>
+  </PropertyGroup>
+
+</Project>

Dockerfile

@@ -1,22 +1,14 @@
 ARG DOTNET_VERSION=5.0
 
-FROM node:alpine as web-builder
+FROM node:lts-alpine as web-builder
 ARG JELLYFIN_WEB_VERSION=master
-RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python \
+RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python3 \
  && curl -L https://github.com/jellyfin/jellyfin-web/archive/${JELLYFIN_WEB_VERSION}.tar.gz | tar zxf - \
  && cd jellyfin-web-* \
- && yarn install \
+ && npm ci --no-audit --unsafe-perm \
  && mv dist /dist
 
-FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION}-buster-slim as builder
-WORKDIR /repo
-COPY . .
-ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
-# because of changes in docker and systemd we need to not build in parallel at the moment
-# see https://success.docker.com/article/how-to-reserve-resource-temporarily-unavailable-errors-due-to-tasksmax-setting
-RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 "-p:DebugSymbols=false;DebugType=none"
-
-FROM debian:buster-slim
+FROM debian:buster-slim as app
 
 # https://askubuntu.com/questions/972516/debian-frontend-environment-variable
 ARG DEBIAN_FRONTEND="noninteractive"
@@ -25,9 +17,6 @@ ARG APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn
 # https://github.com/NVIDIA/nvidia-docker/wiki/Installation-(Native-GPU-Support)
 ENV NVIDIA_DRIVER_CAPABILITIES="compute,video,utility"
 
-COPY --from=builder /jellyfin /jellyfin
-COPY --from=web-builder /dist /jellyfin/jellyfin-web
-
 # https://github.com/intel/compute-runtime/releases
 ARG GMMLIB_VERSION=20.3.2
 ARG IGC_VERSION=1.0.5435
@@ -73,6 +62,19 @@ ENV LC_ALL en_US.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 
+FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} as builder
+WORKDIR /repo
+COPY . .
+ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
+# because of changes in docker and systemd we need to not build in parallel at the moment
+# see https://success.docker.com/article/how-to-reserve-resource-temporarily-unavailable-errors-due-to-tasksmax-setting
+RUN dotnet publish Jellyfin.Server --disable-parallel --configuration Release --output="/jellyfin" --self-contained --runtime linux-x64 "-p:DebugSymbols=false;DebugType=none"
+
+FROM app
+
+COPY --from=builder /jellyfin /jellyfin
+COPY --from=web-builder /dist /jellyfin/jellyfin-web
+
 EXPOSE 8096
 VOLUME /cache /config /media
 ENTRYPOINT ["./jellyfin/jellyfin", \

Dockerfile.arm

@@ -5,27 +5,16 @@
 ARG DOTNET_VERSION=5.0
 
 
-FROM node:alpine as web-builder
+FROM node:lts-alpine as web-builder
 ARG JELLYFIN_WEB_VERSION=master
-RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python \
+RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python3 \
  && curl -L https://github.com/jellyfin/jellyfin-web/archive/${JELLYFIN_WEB_VERSION}.tar.gz | tar zxf - \
  && cd jellyfin-web-* \
- && yarn install \
+ && npm ci --no-audit --unsafe-perm \
  && mv dist /dist
 
-
-FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} as builder
-WORKDIR /repo
-COPY . .
-ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
-# Discard objs - may cause failures if exists
-RUN find . -type d -name obj | xargs -r rm -r
-# Build
-RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm "-p:DebugSymbols=false;DebugType=none"
-
-
 FROM multiarch/qemu-user-static:x86_64-arm as qemu
-FROM arm32v7/debian:buster-slim
+FROM arm32v7/debian:buster-slim as app
 
 # https://askubuntu.com/questions/972516/debian-frontend-environment-variable
 ARG DEBIAN_FRONTEND="noninteractive"
@@ -61,14 +50,25 @@ RUN apt-get update \
  && chmod 777 /cache /config /media \
  && sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && locale-gen
 
-COPY --from=builder /jellyfin /jellyfin
-COPY --from=web-builder /dist /jellyfin/jellyfin-web
-
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
 ENV LC_ALL en_US.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 
+FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} as builder
+WORKDIR /repo
+COPY . .
+ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
+# Discard objs - may cause failures if exists
+RUN find . -type d -name obj | xargs -r rm -r
+# Build
+RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm "-p:DebugSymbols=false;DebugType=none"
+
+FROM app
+
+COPY --from=builder /jellyfin /jellyfin
+COPY --from=web-builder /dist /jellyfin/jellyfin-web
+
 EXPOSE 8096
 VOLUME /cache /config /media
 ENTRYPOINT ["./jellyfin/jellyfin", \

Dockerfile.arm64

@@ -5,26 +5,16 @@
 ARG DOTNET_VERSION=5.0
 
 
-FROM node:alpine as web-builder
+FROM node:lts-alpine as web-builder
 ARG JELLYFIN_WEB_VERSION=master
-RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python \
+RUN apk add curl git zlib zlib-dev autoconf g++ make libpng-dev gifsicle alpine-sdk automake libtool make gcc musl-dev nasm python3 \
  && curl -L https://github.com/jellyfin/jellyfin-web/archive/${JELLYFIN_WEB_VERSION}.tar.gz | tar zxf - \
  && cd jellyfin-web-* \
- && yarn install \
+ && npm ci --no-audit --unsafe-perm \
  && mv dist /dist
 
-
-FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} as builder
-WORKDIR /repo
-COPY . .
-ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
-# Discard objs - may cause failures if exists
-RUN find . -type d -name obj | xargs -r rm -r
-# Build
-RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm64 "-p:DebugSymbols=false;DebugType=none"
-
 FROM multiarch/qemu-user-static:x86_64-aarch64 as qemu
-FROM arm64v8/debian:buster-slim
+FROM arm64v8/debian:buster-slim as app
 
 # https://askubuntu.com/questions/972516/debian-frontend-environment-variable
 ARG DEBIAN_FRONTEND="noninteractive"
@@ -50,14 +40,25 @@ RUN apt-get update && apt-get install --no-install-recommends --no-install-sugge
  && chmod 777 /cache /config /media \
  && sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && locale-gen
 
-COPY --from=builder /jellyfin /jellyfin
-COPY --from=web-builder /dist /jellyfin/jellyfin-web
-
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
 ENV LC_ALL en_US.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 
+FROM mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION} as builder
+WORKDIR /repo
+COPY . .
+ENV DOTNET_CLI_TELEMETRY_OPTOUT=1
+# Discard objs - may cause failures if exists
+RUN find . -type d -name obj | xargs -r rm -r
+# Build
+RUN dotnet publish Jellyfin.Server --configuration Release --output="/jellyfin" --self-contained --runtime linux-arm64 "-p:DebugSymbols=false;DebugType=none"
+
+FROM app
+
+COPY --from=builder /jellyfin /jellyfin
+COPY --from=web-builder /dist /jellyfin/jellyfin-web
+
 EXPOSE 8096
 VOLUME /cache /config /media
 ENTRYPOINT ["./jellyfin/jellyfin", \

DvdLib/DvdLib.csproj

@@ -13,7 +13,8 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <AnalysisMode>AllDisabledByDefault</AnalysisMode>
+    <Nullable>disable</Nullable>
   </PropertyGroup>
 
 </Project>

Emby.Dlna/Configuration/DlnaOptions.cs

@@ -72,7 +72,7 @@ namespace Emby.Dlna.Configuration
         /// <summary>
         /// Gets or sets the default user account that the dlna server uses.
         /// </summary>
-        public string DefaultUserId { get; set; }
+        public string? DefaultUserId { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether playTo device profiles should be created.

Emby.Dlna/ConfigurationExtension.cs

@@ -1,4 +1,3 @@
-#nullable enable
 #pragma warning disable CS1591
 
 using Emby.Dlna.Configuration;

Emby.Dlna/ConnectionManager/ControlHandler.cs

@@ -31,7 +31,7 @@ namespace Emby.Dlna.ConnectionManager
         }
 
         /// <inheritdoc />
-        protected override void WriteResult(string methodName, IDictionary<string, string> methodParams, XmlWriter xmlWriter)
+        protected override void WriteResult(string methodName, IReadOnlyDictionary<string, string> methodParams, XmlWriter xmlWriter)
         {
             if (string.Equals(methodName, "GetProtocolInfo", StringComparison.OrdinalIgnoreCase))
             {

Emby.Dlna/ContentDirectory/ContentDirectoryService.cs

@@ -138,7 +138,7 @@ namespace Emby.Dlna.ContentDirectory
         /// </summary>
         /// <param name="profile">The <see cref="DeviceProfile"/>.</param>
         /// <returns>The <see cref="User"/>.</returns>
-        private User GetUser(DeviceProfile profile)
+        private User? GetUser(DeviceProfile profile)
         {
             if (!string.IsNullOrEmpty(profile.UserId))
             {

Emby.Dlna/ContentDirectory/ControlHandler.cs

@@ -1,5 +1,6 @@
+#nullable disable
+
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -7,7 +8,6 @@ using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Xml;
-using Emby.Dlna.Configuration;
 using Emby.Dlna.Didl;
 using Emby.Dlna.Service;
 using Jellyfin.Data.Entities;
@@ -121,7 +121,7 @@ namespace Emby.Dlna.ContentDirectory
         }
 
         /// <inheritdoc />
-        protected override void WriteResult(string methodName, IDictionary<string, string> methodParams, XmlWriter xmlWriter)
+        protected override void WriteResult(string methodName, IReadOnlyDictionary<string, string> methodParams, XmlWriter xmlWriter)
         {
             if (xmlWriter == null)
             {
@@ -201,8 +201,8 @@ namespace Emby.Dlna.ContentDirectory
         /// <summary>
         /// Adds a "XSetBookmark" element to the xml document.
         /// </summary>
-        /// <param name="sparams">The <see cref="IDictionary"/>.</param>
-        private void HandleXSetBookmark(IDictionary<string, string> sparams)
+        /// <param name="sparams">The method parameters.</param>
+        private void HandleXSetBookmark(IReadOnlyDictionary<string, string> sparams)
         {
             var id = sparams["ObjectID"];
 
@@ -288,52 +288,28 @@ namespace Emby.Dlna.ContentDirectory
         /// <returns>The xml feature list.</returns>
         private static string WriteFeatureListXml()
         {
-            // TODO: clean this up
-            var builder = new StringBuilder();
-
-            builder.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
-            builder.Append("<Features xmlns=\"urn:schemas-upnp-org:av:avs\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"urn:schemas-upnp-org:av:avs http://www.upnp.org/schemas/av/avs.xsd\">");
-
-            builder.Append("<Feature name=\"samsung.com_BASICVIEW\" version=\"1\">");
-            builder.Append("<container id=\"I\" type=\"object.item.imageItem\"/>");
-            builder.Append("<container id=\"A\" type=\"object.item.audioItem\"/>");
-            builder.Append("<container id=\"V\" type=\"object.item.videoItem\"/>");
-            builder.Append("</Feature>");
-
-            builder.Append("</Features>");
-
-            return builder.ToString();
-        }
-
-        /// <summary>
-        /// Returns the value in the key of the dictionary, or defaultValue if it doesn't exist.
-        /// </summary>
-        /// <param name="sparams">The <see cref="IDictionary"/>.</param>
-        /// <param name="key">The key.</param>
-        /// <param name="defaultValue">The defaultValue.</param>
-        /// <returns>The <see cref="string"/>.</returns>
-        public static string GetValueOrDefault(IDictionary<string, string> sparams, string key, string defaultValue)
-        {
-            if (sparams != null && sparams.TryGetValue(key, out string val))
-            {
-                return val;
-            }
-
-            return defaultValue;
+            return "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+                + "<Features xmlns=\"urn:schemas-upnp-org:av:avs\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"urn:schemas-upnp-org:av:avs http://www.upnp.org/schemas/av/avs.xsd\">"
+                + "<Feature name=\"samsung.com_BASICVIEW\" version=\"1\">"
+                + "<container id=\"I\" type=\"object.item.imageItem\"/>"
+                + "<container id=\"A\" type=\"object.item.audioItem\"/>"
+                + "<container id=\"V\" type=\"object.item.videoItem\"/>"
+                + "</Feature>"
+                + "</Features>";
         }
 
         /// <summary>
         /// Builds the "Browse" xml response.
         /// </summary>
         /// <param name="xmlWriter">The <see cref="XmlWriter"/>.</param>
-        /// <param name="sparams">The <see cref="IDictionary"/>.</param>
+        /// <param name="sparams">The method parameters.</param>
         /// <param name="deviceId">The device Id to use.</param>
-        private void HandleBrowse(XmlWriter xmlWriter, IDictionary<string, string> sparams, string deviceId)
+        private void HandleBrowse(XmlWriter xmlWriter, IReadOnlyDictionary<string, string> sparams, string deviceId)
         {
             var id = sparams["ObjectID"];
             var flag = sparams["BrowseFlag"];
-            var filter = new Filter(GetValueOrDefault(sparams, "Filter", "*"));
-            var sortCriteria = new SortCriteria(GetValueOrDefault(sparams, "SortCriteria", string.Empty));
+            var filter = new Filter(sparams.GetValueOrDefault("Filter", "*"));
+            var sortCriteria = new SortCriteria(sparams.GetValueOrDefault("SortCriteria", string.Empty));
 
             var provided = 0;
 
@@ -435,9 +411,9 @@ namespace Emby.Dlna.ContentDirectory
         /// Builds the response to the "X_BrowseByLetter request.
         /// </summary>
         /// <param name="xmlWriter">The <see cref="XmlWriter"/>.</param>
-        /// <param name="sparams">The <see cref="IDictionary"/>.</param>
+        /// <param name="sparams">The method parameters.</param>
         /// <param name="deviceId">The device id.</param>
-        private void HandleXBrowseByLetter(XmlWriter xmlWriter, IDictionary<string, string> sparams, string deviceId)
+        private void HandleXBrowseByLetter(XmlWriter xmlWriter, IReadOnlyDictionary<string, string> sparams, string deviceId)
         {
             // TODO: Implement this method
             HandleSearch(xmlWriter, sparams, deviceId);
@@ -447,13 +423,13 @@ namespace Emby.Dlna.ContentDirectory
         /// Builds a response to the "Search" request.
         /// </summary>
         /// <param name="xmlWriter">The xmlWriter<see cref="XmlWriter"/>.</param>
-        /// <param name="sparams">The sparams<see cref="IDictionary"/>.</param>
+        /// <param name="sparams">The method parameters.</param>
         /// <param name="deviceId">The deviceId<see cref="string"/>.</param>
-        private void HandleSearch(XmlWriter xmlWriter, IDictionary<string, string> sparams, string deviceId)
+        private void HandleSearch(XmlWriter xmlWriter, IReadOnlyDictionary<string, string> sparams, string deviceId)
         {
-            var searchCriteria = new SearchCriteria(GetValueOrDefault(sparams, "SearchCriteria", string.Empty));
-            var sortCriteria = new SortCriteria(GetValueOrDefault(sparams, "SortCriteria", string.Empty));
-            var filter = new Filter(GetValueOrDefault(sparams, "Filter", "*"));
+            var searchCriteria = new SearchCriteria(sparams.GetValueOrDefault("SearchCriteria", string.Empty));
+            var sortCriteria = new SortCriteria(sparams.GetValueOrDefault("SortCriteria", string.Empty));
+            var filter = new Filter(sparams.GetValueOrDefault("Filter", "*"));
 
             // sort example: dc:title, dc:date
 

Emby.Dlna/ContentDirectory/StubType.cs

@@ -1,5 +1,4 @@
 #pragma warning disable CS1591
-#pragma warning disable SA1602
 
 namespace Emby.Dlna.ContentDirectory
 {

Emby.Dlna/ControlRequest.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System.IO;

Emby.Dlna/ControlResponse.cs

@@ -6,9 +6,11 @@ namespace Emby.Dlna
 {
     public class ControlResponse
     {
-        public ControlResponse()
+        public ControlResponse(string xml, bool isSuccessful)
         {
             Headers = new Dictionary<string, string>();
+            Xml = xml;
+            IsSuccessful = isSuccessful;
         }
 
         public IDictionary<string, string> Headers { get; }

Emby.Dlna/Didl/DidlBuilder.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -96,6 +98,7 @@ namespace Emby.Dlna.Didl
 
             using (StringWriter builder = new StringWriterWithEncoding(Encoding.UTF8))
             {
+                // If this using are changed to single lines, then write.Flush needs to be appended before the return.
                 using (var writer = XmlWriter.Create(builder, settings))
                 {
                     // writer.WriteStartDocument();
@@ -207,7 +210,8 @@ namespace Emby.Dlna.Didl
             var targetWidth = streamInfo.TargetWidth;
             var targetHeight = streamInfo.TargetHeight;
 
-            var contentFeatureList = new ContentFeatureBuilder(_profile).BuildVideoHeader(
+            var contentFeatureList = ContentFeatureBuilder.BuildVideoHeader(
+                _profile,
                 streamInfo.Container,
                 streamInfo.TargetVideoCodec.FirstOrDefault(),
                 streamInfo.TargetAudioCodec.FirstOrDefault(),
@@ -598,7 +602,8 @@ namespace Emby.Dlna.Didl
                 ? MimeTypes.GetMimeType(filename)
                 : mediaProfile.MimeType;
 
-            var contentFeatures = new ContentFeatureBuilder(_profile).BuildAudioHeader(
+            var contentFeatures = ContentFeatureBuilder.BuildAudioHeader(
+                _profile,
                 streamInfo.Container,
                 streamInfo.TargetAudioCodec.FirstOrDefault(),
                 targetAudioBitrate,
@@ -973,15 +978,28 @@ namespace Emby.Dlna.Didl
                 return;
             }
 
-            var albumartUrlInfo = GetImageUrl(imageInfo, _profile.MaxAlbumArtWidth, _profile.MaxAlbumArtHeight, "jpg");
+            // TODO: Remove these default values
+            var albumArtUrlInfo = GetImageUrl(
+                imageInfo,
+                _profile.MaxAlbumArtWidth ?? 10000,
+                _profile.MaxAlbumArtHeight ?? 10000,
+                "jpg");
 
             writer.WriteStartElement("upnp", "albumArtURI", NsUpnp);
-            writer.WriteAttributeString("dlna", "profileID", NsDlna, _profile.AlbumArtPn);
-            writer.WriteString(albumartUrlInfo.url);
+            if (!string.IsNullOrEmpty(_profile.AlbumArtPn))
+            {
+                writer.WriteAttributeString("dlna", "profileID", NsDlna, _profile.AlbumArtPn);
+            }
+
+            writer.WriteString(albumArtUrlInfo.url);
             writer.WriteFullEndElement();
 
-            // TOOD: Remove these default values
-            var iconUrlInfo = GetImageUrl(imageInfo, _profile.MaxIconWidth ?? 48, _profile.MaxIconHeight ?? 48, "jpg");
+            // TODO: Remove these default values
+            var iconUrlInfo = GetImageUrl(
+                imageInfo,
+                _profile.MaxIconWidth ?? 48,
+                _profile.MaxIconHeight ?? 48,
+                "jpg");
             writer.WriteElementString("upnp", "icon", NsUpnp, iconUrlInfo.url);
 
             if (!_profile.EnableAlbumArtInDidl)
@@ -1032,8 +1050,7 @@ namespace Emby.Dlna.Didl
             var width = albumartUrlInfo.width ?? maxWidth;
             var height = albumartUrlInfo.height ?? maxHeight;
 
-            var contentFeatures = new ContentFeatureBuilder(_profile)
-                .BuildImageHeader(format, width, height, imageInfo.IsDirectStream, org_Pn);
+            var contentFeatures = ContentFeatureBuilder.BuildImageHeader(_profile, format, width, height, imageInfo.IsDirectStream, org_Pn);
 
             writer.WriteAttributeString(
                 "protocolInfo",
@@ -1205,8 +1222,7 @@ namespace Emby.Dlna.Didl
 
             if (width.HasValue && height.HasValue)
             {
-                var newSize = DrawingUtils.Resize(
-                        new ImageDimensions(width.Value, height.Value), 0, 0, maxWidth, maxHeight);
+                var newSize = DrawingUtils.Resize(new ImageDimensions(width.Value, height.Value), 0, 0, maxWidth, maxHeight);
 
                 width = newSize.Width;
                 height = newSize.Height;

Emby.Dlna/Didl/StringWriterWithEncoding.cs

@@ -9,7 +9,7 @@ namespace Emby.Dlna.Didl
 {
     public class StringWriterWithEncoding : StringWriter
     {
-        private readonly Encoding _encoding;
+        private readonly Encoding? _encoding;
 
         public StringWriterWithEncoding()
         {

Emby.Dlna/DlnaConfigurationFactory.cs

@@ -1,4 +1,3 @@
-#nullable enable
 #pragma warning disable CS1591
 
 using System.Collections.Generic;

Emby.Dlna/DlnaManager.cs

@@ -1,5 +1,4 @@
 #pragma warning disable CS1591
-
 using System;
 using System.Collections.Generic;
 using System.Globalization;
@@ -7,10 +6,12 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Text;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Emby.Dlna.Profiles;
 using Emby.Dlna.Server;
+using Jellyfin.Extensions.Json;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller;
@@ -32,9 +33,9 @@ namespace Emby.Dlna
         private readonly IXmlSerializer _xmlSerializer;
         private readonly IFileSystem _fileSystem;
         private readonly ILogger<DlnaManager> _logger;
-        private readonly IJsonSerializer _jsonSerializer;
         private readonly IServerApplicationHost _appHost;
         private static readonly Assembly _assembly = typeof(DlnaManager).Assembly;
+        private readonly JsonSerializerOptions _jsonOptions = JsonDefaults.Options;
 
         private readonly Dictionary<string, Tuple<InternalProfileInfo, DeviceProfile>> _profiles = new Dictionary<string, Tuple<InternalProfileInfo, DeviceProfile>>(StringComparer.Ordinal);
 
@@ -43,14 +44,12 @@ namespace Emby.Dlna
             IFileSystem fileSystem,
             IApplicationPaths appPaths,
             ILoggerFactory loggerFactory,
-            IJsonSerializer jsonSerializer,
             IServerApplicationHost appHost)
         {
             _xmlSerializer = xmlSerializer;
             _fileSystem = fileSystem;
             _appPaths = appPaths;
             _logger = loggerFactory.CreateLogger<DlnaManager>();
-            _jsonSerializer = jsonSerializer;
             _appHost = appHost;
         }
 
@@ -94,12 +93,14 @@ namespace Emby.Dlna
             }
         }
 
+        /// <inheritdoc />
         public DeviceProfile GetDefaultProfile()
         {
             return new DefaultProfile();
         }
 
-        public DeviceProfile GetProfile(DeviceIdentification deviceInfo)
+        /// <inheritdoc />
+        public DeviceProfile? GetProfile(DeviceIdentification deviceInfo)
         {
             if (deviceInfo == null)
             {
@@ -109,13 +110,13 @@ namespace Emby.Dlna
             var profile = GetProfiles()
                 .FirstOrDefault(i => i.Identification != null && IsMatch(deviceInfo, i.Identification));
 
-            if (profile != null)
+            if (profile == null)
             {
-                _logger.LogDebug("Found matching device profile: {0}", profile.Name);
+                LogUnmatchedProfile(deviceInfo);
             }
             else
             {
-                LogUnmatchedProfile(deviceInfo);
+                _logger.LogDebug("Found matching device profile: {ProfileName}", profile.Name);
             }
 
             return profile;
@@ -126,92 +127,57 @@ namespace Emby.Dlna
             var builder = new StringBuilder();
 
             builder.AppendLine("No matching device profile found. The default will need to be used.");
-            builder.Append("FriendlyName:").AppendLine(profile.FriendlyName);
-            builder.Append("Manufacturer:").AppendLine(profile.Manufacturer);
-            builder.Append("ManufacturerUrl:").AppendLine(profile.ManufacturerUrl);
-            builder.Append("ModelDescription:").AppendLine(profile.ModelDescription);
-            builder.Append("ModelName:").AppendLine(profile.ModelName);
-            builder.Append("ModelNumber:").AppendLine(profile.ModelNumber);
-            builder.Append("ModelUrl:").AppendLine(profile.ModelUrl);
-            builder.Append("SerialNumber:").AppendLine(profile.SerialNumber);
+            builder.Append("FriendlyName: ").AppendLine(profile.FriendlyName);
+            builder.Append("Manufacturer: ").AppendLine(profile.Manufacturer);
+            builder.Append("ManufacturerUrl: ").AppendLine(profile.ManufacturerUrl);
+            builder.Append("ModelDescription: ").AppendLine(profile.ModelDescription);
+            builder.Append("ModelName: ").AppendLine(profile.ModelName);
+            builder.Append("ModelNumber: ").AppendLine(profile.ModelNumber);
+            builder.Append("ModelUrl: ").AppendLine(profile.ModelUrl);
+            builder.Append("SerialNumber: ").AppendLine(profile.SerialNumber);
 
             _logger.LogInformation(builder.ToString());
         }
 
-        private bool IsMatch(DeviceIdentification deviceInfo, DeviceIdentification profileInfo)
+        /// <summary>
+        /// Attempts to match a device with a profile.
+        /// Rules:
+        /// - If the profile field has no value, the field matches irregardless of its contents.
+        /// - the profile field can be an exact match, or a reg exp.
+        /// </summary>
+        /// <param name="deviceInfo">The <see cref="DeviceIdentification"/> of the device.</param>
+        /// <param name="profileInfo">The <see cref="DeviceIdentification"/> of the profile.</param>
+        /// <returns><b>True</b> if they match.</returns>
+        public bool IsMatch(DeviceIdentification deviceInfo, DeviceIdentification profileInfo)
         {
-            if (!string.IsNullOrEmpty(profileInfo.FriendlyName))
-            {
-                if (deviceInfo.FriendlyName == null || !IsRegexOrSubstringMatch(deviceInfo.FriendlyName, profileInfo.FriendlyName))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.Manufacturer))
-            {
-                if (deviceInfo.Manufacturer == null || !IsRegexOrSubstringMatch(deviceInfo.Manufacturer, profileInfo.Manufacturer))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.ManufacturerUrl))
-            {
-                if (deviceInfo.ManufacturerUrl == null || !IsRegexOrSubstringMatch(deviceInfo.ManufacturerUrl, profileInfo.ManufacturerUrl))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.ModelDescription))
-            {
-                if (deviceInfo.ModelDescription == null || !IsRegexOrSubstringMatch(deviceInfo.ModelDescription, profileInfo.ModelDescription))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.ModelName))
-            {
-                if (deviceInfo.ModelName == null || !IsRegexOrSubstringMatch(deviceInfo.ModelName, profileInfo.ModelName))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.ModelNumber))
-            {
-                if (deviceInfo.ModelNumber == null || !IsRegexOrSubstringMatch(deviceInfo.ModelNumber, profileInfo.ModelNumber))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.ModelUrl))
-            {
-                if (deviceInfo.ModelUrl == null || !IsRegexOrSubstringMatch(deviceInfo.ModelUrl, profileInfo.ModelUrl))
-                {
-                    return false;
-                }
-            }
-
-            if (!string.IsNullOrEmpty(profileInfo.SerialNumber))
-            {
-                if (deviceInfo.SerialNumber == null || !IsRegexOrSubstringMatch(deviceInfo.SerialNumber, profileInfo.SerialNumber))
-                {
-                    return false;
-                }
-            }
-
-            return true;
+            return IsRegexOrSubstringMatch(deviceInfo.FriendlyName, profileInfo.FriendlyName)
+                && IsRegexOrSubstringMatch(deviceInfo.Manufacturer, profileInfo.Manufacturer)
+                && IsRegexOrSubstringMatch(deviceInfo.ManufacturerUrl, profileInfo.ManufacturerUrl)
+                && IsRegexOrSubstringMatch(deviceInfo.ModelDescription, profileInfo.ModelDescription)
+                && IsRegexOrSubstringMatch(deviceInfo.ModelName, profileInfo.ModelName)
+                && IsRegexOrSubstringMatch(deviceInfo.ModelNumber, profileInfo.ModelNumber)
+                && IsRegexOrSubstringMatch(deviceInfo.ModelUrl, profileInfo.ModelUrl)
+                && IsRegexOrSubstringMatch(deviceInfo.SerialNumber, profileInfo.SerialNumber);
         }
 
         private bool IsRegexOrSubstringMatch(string input, string pattern)
         {
+            if (string.IsNullOrEmpty(pattern))
+            {
+                // In profile identification: An empty pattern matches anything.
+                return true;
+            }
+
+            if (string.IsNullOrEmpty(input))
+            {
+                // The profile contains a value, and the device doesn't.
+                return false;
+            }
+
             try
             {
-                return input.Contains(pattern, StringComparison.OrdinalIgnoreCase) || Regex.IsMatch(input, pattern, RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);
+                return input.Equals(pattern, StringComparison.OrdinalIgnoreCase)
+                    || Regex.IsMatch(input, pattern, RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);
             }
             catch (ArgumentException ex)
             {
@@ -220,7 +186,8 @@ namespace Emby.Dlna
             }
         }
 
-        public DeviceProfile GetProfile(IHeaderDictionary headers)
+        /// <inheritdoc />
+        public DeviceProfile? GetProfile(IHeaderDictionary headers)
         {
             if (headers == null)
             {
@@ -228,15 +195,13 @@ namespace Emby.Dlna
             }
 
             var profile = GetProfiles().FirstOrDefault(i => i.Identification != null && IsMatch(headers, i.Identification));
-
-            if (profile != null)
+            if (profile == null)
             {
-                _logger.LogDebug("Found matching device profile: {0}", profile.Name);
+                _logger.LogDebug("No matching device profile found. {@Headers}", headers);
             }
             else
             {
-                var headerString = string.Join(", ", headers.Select(i => string.Format(CultureInfo.InvariantCulture, "{0}={1}", i.Key, i.Value)));
-                _logger.LogDebug("No matching device profile found. {0}", headerString);
+                _logger.LogDebug("Found matching device profile: {0}", profile.Name);
             }
 
             return profile;
@@ -286,19 +251,19 @@ namespace Emby.Dlna
                 return xmlFies
                     .Select(i => ParseProfileFile(i, type))
                     .Where(i => i != null)
-                    .ToList();
+                    .ToList()!; // We just filtered out all the nulls
             }
             catch (IOException)
             {
-                return new List<DeviceProfile>();
+                return Array.Empty<DeviceProfile>();
             }
         }
 
-        private DeviceProfile ParseProfileFile(string path, DeviceProfileType type)
+        private DeviceProfile? ParseProfileFile(string path, DeviceProfileType type)
         {
             lock (_profiles)
             {
-                if (_profiles.TryGetValue(path, out Tuple<InternalProfileInfo, DeviceProfile> profileTuple))
+                if (_profiles.TryGetValue(path, out Tuple<InternalProfileInfo, DeviceProfile>? profileTuple))
                 {
                     return profileTuple.Item2;
                 }
@@ -326,14 +291,20 @@ namespace Emby.Dlna
             }
         }
 
-        public DeviceProfile GetProfile(string id)
+        /// <inheritdoc />
+        public DeviceProfile? GetProfile(string id)
         {
             if (string.IsNullOrEmpty(id))
             {
                 throw new ArgumentNullException(nameof(id));
             }
 
-            var info = GetProfileInfosInternal().First(i => string.Equals(i.Info.Id, id, StringComparison.OrdinalIgnoreCase));
+            var info = GetProfileInfosInternal().FirstOrDefault(i => string.Equals(i.Info.Id, id, StringComparison.OrdinalIgnoreCase));
+
+            if (info == null)
+            {
+                return null;
+            }
 
             return ParseProfileFile(info.Path, info.Info.Type);
         }
@@ -350,6 +321,7 @@ namespace Emby.Dlna
             }
         }
 
+        /// <inheritdoc />
         public IEnumerable<DeviceProfileInfo> GetProfileInfos()
         {
             return GetProfileInfosInternal().Select(i => i.Info);
@@ -357,17 +329,14 @@ namespace Emby.Dlna
 
         private InternalProfileInfo GetInternalProfileInfo(FileSystemMetadata file, DeviceProfileType type)
         {
-            return new InternalProfileInfo
-            {
-                Path = file.FullName,
-
-                Info = new DeviceProfileInfo
+            return new InternalProfileInfo(
+                new DeviceProfileInfo
                 {
                     Id = file.FullName.ToLowerInvariant().GetMD5().ToString("N", CultureInfo.InvariantCulture),
                     Name = _fileSystem.GetFileNameWithoutExtension(file),
                     Type = type
-                }
-            };
+                },
+                file.FullName);
         }
 
         private async Task ExtractSystemProfilesAsync()
@@ -387,7 +356,8 @@ namespace Emby.Dlna
                     systemProfilesPath,
                     Path.GetFileName(name.AsSpan()).Slice(namespaceName.Length));
 
-                using (var stream = _assembly.GetManifestResourceStream(name))
+                // The stream should exist as we just got its name from GetManifestResourceNames
+                using (var stream = _assembly.GetManifestResourceStream(name)!)
                 {
                     var fileInfo = _fileSystem.GetFileInfo(path);
 
@@ -395,7 +365,8 @@ namespace Emby.Dlna
                     {
                         Directory.CreateDirectory(systemProfilesPath);
 
-                        using (var fileStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
+                        // use FileShare.None as this bypasses dotnet bug dotnet/runtime#42790 .
+                        using (var fileStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None))
                         {
                             await stream.CopyToAsync(fileStream).ConfigureAwait(false);
                         }
@@ -407,6 +378,7 @@ namespace Emby.Dlna
             Directory.CreateDirectory(UserProfilesPath);
         }
 
+        /// <inheritdoc />
         public void DeleteProfile(string id)
         {
             var info = GetProfileInfosInternal().First(i => string.Equals(id, i.Info.Id, StringComparison.OrdinalIgnoreCase));
@@ -424,6 +396,7 @@ namespace Emby.Dlna
             }
         }
 
+        /// <inheritdoc />
         public void CreateProfile(DeviceProfile profile)
         {
             profile = ReserializeProfile(profile);
@@ -439,6 +412,7 @@ namespace Emby.Dlna
             SaveProfile(profile, path, DeviceProfileType.User);
         }
 
+        /// <inheritdoc />
         public void UpdateProfile(DeviceProfile profile)
         {
             profile = ReserializeProfile(profile);
@@ -495,11 +469,13 @@ namespace Emby.Dlna
                 return profile;
             }
 
-            var json = _jsonSerializer.SerializeToString(profile);
+            var json = JsonSerializer.Serialize(profile, _jsonOptions);
 
-            return _jsonSerializer.DeserializeFromString<DeviceProfile>(json);
+            // Output can't be null if the input isn't null
+            return JsonSerializer.Deserialize<DeviceProfile>(json, _jsonOptions)!;
         }
 
+        /// <inheritdoc />
         public string GetServerDescriptionXml(IHeaderDictionary headers, string serverUuId, string serverAddress)
         {
             var profile = GetDefaultProfile();
@@ -509,6 +485,7 @@ namespace Emby.Dlna
             return new DescriptionXmlBuilder(profile, serverUuId, serverAddress, _appHost.FriendlyName, serverId).GetXml();
         }
 
+        /// <inheritdoc />
         public ImageStream GetIcon(string filename)
         {
             var format = filename.EndsWith(".png", StringComparison.OrdinalIgnoreCase)
@@ -526,9 +503,15 @@ namespace Emby.Dlna
 
         private class InternalProfileInfo
         {
-            internal DeviceProfileInfo Info { get; set; }
+            internal InternalProfileInfo(DeviceProfileInfo info, string path)
+            {
+                Info = info;
+                Path = path;
+            }
 
-            internal string Path { get; set; }
+            internal DeviceProfileInfo Info { get; }
+
+            internal string Path { get; }
         }
     }
 
@@ -553,7 +536,7 @@ namespace Emby.Dlna
 
         private void DumpProfiles()
         {
-            DeviceProfile[] list = new []
+            DeviceProfile[] list = new[]
             {
                 new SamsungSmartTvProfile(),
                 new XboxOneProfile(),

Emby.Dlna/Emby.Dlna.csproj

@@ -20,21 +20,16 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <AnalysisMode>AllDisabledByDefault</AnalysisMode>
   </PropertyGroup>
 
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-
   <ItemGroup>
     <EmbeddedResource Include="Images\logo120.jpg" />
     <EmbeddedResource Include="Images\logo120.png" />
@@ -78,9 +73,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
-    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.6" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
   </ItemGroup>
 
 </Project>

Emby.Dlna/EventSubscriptionResponse.cs

@@ -6,8 +6,10 @@ namespace Emby.Dlna
 {
     public class EventSubscriptionResponse
     {
-        public EventSubscriptionResponse()
+        public EventSubscriptionResponse(string content, string contentType)
         {
+            Content = content;
+            ContentType = contentType;
             Headers = new Dictionary<string, string>();
         }
 

Emby.Dlna/Eventing/DlnaEventManager.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -49,11 +51,7 @@ namespace Emby.Dlna.Eventing
                 return GetEventSubscriptionResponse(subscriptionId, requestedTimeoutString, timeoutSeconds);
             }
 
-            return new EventSubscriptionResponse
-            {
-                Content = string.Empty,
-                ContentType = "text/plain"
-            };
+            return new EventSubscriptionResponse(string.Empty, "text/plain");
         }
 
         public EventSubscriptionResponse CreateEventSubscription(string notificationType, string requestedTimeoutString, string callbackUrl)
@@ -101,20 +99,12 @@ namespace Emby.Dlna.Eventing
 
             _subscriptions.TryRemove(subscriptionId, out _);
 
-            return new EventSubscriptionResponse
-            {
-                Content = string.Empty,
-                ContentType = "text/plain"
-            };
+            return new EventSubscriptionResponse(string.Empty, "text/plain");
         }
 
         private EventSubscriptionResponse GetEventSubscriptionResponse(string subscriptionId, string requestedTimeoutString, int timeoutSeconds)
         {
-            var response = new EventSubscriptionResponse
-            {
-                Content = string.Empty,
-                ContentType = "text/plain"
-            };
+            var response = new EventSubscriptionResponse(string.Empty, "text/plain");
 
             response.Headers["SID"] = subscriptionId;
             response.Headers["TIMEOUT"] = string.IsNullOrEmpty(requestedTimeoutString) ? ("SECOND-" + timeoutSeconds.ToString(_usCulture)) : requestedTimeoutString;

Emby.Dlna/Eventing/EventSubscription.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;

Emby.Dlna/Main/DlnaEntryPoint.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -5,10 +7,10 @@ using System.Globalization;
 using System.Linq;
 using System.Net.Http;
 using System.Net.Sockets;
-using System.Threading;
 using System.Threading.Tasks;
 using Emby.Dlna.PlayTo;
 using Emby.Dlna.Ssdp;
+using Jellyfin.Networking.Configuration;
 using Jellyfin.Networking.Manager;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
@@ -25,11 +27,9 @@ using MediaBrowser.Controller.TV;
 using MediaBrowser.Model.Dlna;
 using MediaBrowser.Model.Globalization;
 using MediaBrowser.Model.Net;
-using MediaBrowser.Model.System;
 using Microsoft.Extensions.Logging;
 using Rssdp;
 using Rssdp.Infrastructure;
-using OperatingSystem = MediaBrowser.Common.System.OperatingSystem;
 
 namespace Emby.Dlna.Main
 {
@@ -52,6 +52,8 @@ namespace Emby.Dlna.Main
         private readonly ISocketFactory _socketFactory;
         private readonly INetworkManager _networkManager;
         private readonly object _syncLock = new object();
+        private readonly NetworkConfiguration _netConfig;
+        private readonly bool _disabled;
 
         private PlayToManager _manager;
         private SsdpDevicePublisher _publisher;
@@ -122,10 +124,23 @@ namespace Emby.Dlna.Main
                 httpClientFactory,
                 config);
             Current = this;
+
+            _netConfig = config.GetConfiguration<NetworkConfiguration>("network");
+            _disabled = appHost.ListenWithHttps && _netConfig.RequireHttps;
+
+            if (_disabled && _config.GetDlnaConfiguration().EnableServer)
+            {
+                _logger.LogError("The DLNA specification does not support HTTPS.");
+            }
         }
 
         public static DlnaEntryPoint Current { get; private set; }
 
+        /// <summary>
+        /// Gets a value indicating whether the dlna server is enabled.
+        /// </summary>
+        public static bool Enabled { get; private set; }
+
         public IContentDirectory ContentDirectory { get; private set; }
 
         public IConnectionManager ConnectionManager { get; private set; }
@@ -136,6 +151,12 @@ namespace Emby.Dlna.Main
         {
             await ((DlnaManager)_dlnaManager).InitProfilesAsync().ConfigureAwait(false);
 
+            if (_disabled)
+            {
+                // No use starting as dlna won't work, as we're running purely on HTTPS.
+                return;
+            }
+
             ReloadComponents();
 
             _config.NamedConfigurationUpdated += OnNamedConfigurationUpdated;
@@ -152,6 +173,7 @@ namespace Emby.Dlna.Main
         private void ReloadComponents()
         {
             var options = _config.GetDlnaConfiguration();
+            Enabled = options.EnableServer;
 
             StartSsdpHandler();
 
@@ -180,8 +202,8 @@ namespace Emby.Dlna.Main
             {
                 if (_communicationsServer == null)
                 {
-                    var enableMultiSocketBinding = OperatingSystem.Id == OperatingSystemId.Windows ||
-                                                   OperatingSystem.Id == OperatingSystemId.Linux;
+                    var enableMultiSocketBinding = OperatingSystem.IsWindows() ||
+                                                   OperatingSystem.IsLinux();
 
                     _communicationsServer = new SsdpCommunicationsServer(_socketFactory, _networkManager, _logger, enableMultiSocketBinding)
                     {
@@ -206,7 +228,10 @@ namespace Emby.Dlna.Main
         {
             try
             {
-                ((DeviceDiscovery)_deviceDiscovery).Start(communicationsServer);
+                if (communicationsServer != null)
+                {
+                    ((DeviceDiscovery)_deviceDiscovery).Start(communicationsServer);
+                }
             }
             catch (Exception ex)
             {
@@ -241,7 +266,12 @@ namespace Emby.Dlna.Main
 
             try
             {
-                _publisher = new SsdpDevicePublisher(_communicationsServer, _networkManager, OperatingSystem.Name, Environment.OSVersion.VersionString, _config.GetDlnaConfiguration().SendOnlyMatchedHost)
+                _publisher = new SsdpDevicePublisher(
+                    _communicationsServer,
+                    _networkManager,
+                    MediaBrowser.Common.System.OperatingSystem.Name,
+                    Environment.OSVersion.VersionString,
+                    _config.GetDlnaConfiguration().SendOnlyMatchedHost)
                 {
                     LogFunction = LogMessage,
                     SupportPnpRootDevice = false
@@ -290,12 +320,18 @@ namespace Emby.Dlna.Main
 
                 _logger.LogInformation("Registering publisher for {0} on {1}", fullService, address);
 
-                var uri = new Uri(_appHost.GetSmartApiUrl(address.Address) + descriptorUri);
+                var uri = new UriBuilder(_appHost.GetSmartApiUrl(address.Address) + descriptorUri);
+                if (!string.IsNullOrEmpty(_appHost.PublishedServerUrl))
+                {
+                    // DLNA will only work over http, so we must reset to http:// : {port}.
+                    uri.Scheme = "http";
+                    uri.Port = _netConfig.HttpServerPortNumber;
+                }
 
                 var device = new SsdpRootDevice
                 {
                     CacheLifetime = TimeSpan.FromSeconds(1800), // How long SSDP clients can cache this info.
-                    Location = uri, // Must point to the URL that serves your devices UPnP description document.
+                    Location = uri.Uri, // Must point to the URL that serves your devices UPnP description document.
                     Address = address.Address,
                     PrefixLength = address.PrefixLength,
                     FriendlyName = "Jellyfin",

Emby.Dlna/MediaReceiverRegistrar/ControlHandler.cs

@@ -24,7 +24,7 @@ namespace Emby.Dlna.MediaReceiverRegistrar
         }
 
         /// <inheritdoc />
-        protected override void WriteResult(string methodName, IDictionary<string, string> methodParams, XmlWriter xmlWriter)
+        protected override void WriteResult(string methodName, IReadOnlyDictionary<string, string> methodParams, XmlWriter xmlWriter)
         {
             if (string.Equals(methodName, "IsAuthorized", StringComparison.OrdinalIgnoreCase))
             {

Emby.Dlna/MediaReceiverRegistrar/MediaReceiverRegistrarXmlBuilder.cs

@@ -1,7 +1,6 @@
 using System.Collections.Generic;
 using Emby.Dlna.Common;
 using Emby.Dlna.Service;
-using MediaBrowser.Model.Dlna;
 
 namespace Emby.Dlna.MediaReceiverRegistrar
 {

Emby.Dlna/PlayTo/Device.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -219,7 +221,7 @@ namespace Emby.Dlna.PlayTo
         {
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = rendererCommands.ServiceActions.FirstOrDefault(c => c.Name == "SetMute");
+            var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetMute");
             if (command == null)
             {
                 return false;
@@ -235,7 +237,13 @@ namespace Emby.Dlna.PlayTo
             _logger.LogDebug("Setting mute");
             var value = mute ? 1 : 0;
 
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, rendererCommands.BuildPost(command, service.ServiceType, value))
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    rendererCommands.BuildPost(command, service.ServiceType, value),
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
             IsMuted = mute;
@@ -253,7 +261,7 @@ namespace Emby.Dlna.PlayTo
         {
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = rendererCommands.ServiceActions.FirstOrDefault(c => c.Name == "SetVolume");
+            var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetVolume");
             if (command == null)
             {
                 return;
@@ -270,7 +278,13 @@ namespace Emby.Dlna.PlayTo
             // Remote control will perform better
             Volume = value;
 
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, rendererCommands.BuildPost(command, service.ServiceType, value))
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    rendererCommands.BuildPost(command, service.ServiceType, value),
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
         }
 
@@ -278,7 +292,7 @@ namespace Emby.Dlna.PlayTo
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Seek");
+            var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Seek");
             if (command == null)
             {
                 return;
@@ -291,7 +305,13 @@ namespace Emby.Dlna.PlayTo
                 throw new InvalidOperationException("Unable to find service");
             }
 
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, avCommands.BuildPost(command, service.ServiceType, string.Format(CultureInfo.InvariantCulture, "{0:hh}:{0:mm}:{0:ss}", value), "REL_TIME"))
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    avCommands.BuildPost(command, service.ServiceType, string.Format(CultureInfo.InvariantCulture, "{0:hh}:{0:mm}:{0:ss}", value), "REL_TIME"),
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
             RestartTimer(true);
@@ -305,7 +325,7 @@ namespace Emby.Dlna.PlayTo
 
             _logger.LogDebug("{0} - SetAvTransport Uri: {1} DlnaHeaders: {2}", Properties.Name, url, header);
 
-            var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "SetAVTransportURI");
+            var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "SetAVTransportURI");
             if (command == null)
             {
                 return;
@@ -325,14 +345,21 @@ namespace Emby.Dlna.PlayTo
             }
 
             var post = avCommands.BuildPost(command, service.ServiceType, url, dictionary);
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, post, header: header)
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    post,
+                    header: header,
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
-            await Task.Delay(50).ConfigureAwait(false);
+            await Task.Delay(50, cancellationToken).ConfigureAwait(false);
 
             try
             {
-                await SetPlay(avCommands, CancellationToken.None).ConfigureAwait(false);
+                await SetPlay(avCommands, cancellationToken).ConfigureAwait(false);
             }
             catch
             {
@@ -343,6 +370,42 @@ namespace Emby.Dlna.PlayTo
             RestartTimer(true);
         }
 
+        /*
+         * SetNextAvTransport is used to specify to the DLNA device what is the next track to play.
+         * Without that information, the next track command on the device does not work.
+         */
+        public async Task SetNextAvTransport(string url, string header, string metaData, CancellationToken cancellationToken = default)
+        {
+            var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
+
+            url = url.Replace("&", "&", StringComparison.Ordinal);
+
+            _logger.LogDebug("{PropertyName} - SetNextAvTransport Uri: {Url} DlnaHeaders: {Header}", Properties.Name, url, header);
+
+            var command = avCommands.ServiceActions.FirstOrDefault(c => string.Equals(c.Name, "SetNextAVTransportURI", StringComparison.OrdinalIgnoreCase));
+            if (command == null)
+            {
+                return;
+            }
+
+            var dictionary = new Dictionary<string, string>
+            {
+                { "NextURI", url },
+                { "NextURIMetaData", CreateDidlMeta(metaData) }
+            };
+
+            var service = GetAvTransportService();
+
+            if (service == null)
+            {
+                throw new InvalidOperationException("Unable to find service");
+            }
+
+            var post = avCommands.BuildPost(command, service.ServiceType, url, dictionary);
+            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, post, header: header, cancellationToken)
+                .ConfigureAwait(false);
+        }
+
         private static string CreateDidlMeta(string value)
         {
             if (string.IsNullOrEmpty(value))
@@ -378,6 +441,10 @@ namespace Emby.Dlna.PlayTo
         public async Task SetPlay(CancellationToken cancellationToken)
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
+            if (avCommands == null)
+            {
+                return;
+            }
 
             await SetPlay(avCommands, cancellationToken).ConfigureAwait(false);
 
@@ -388,7 +455,7 @@ namespace Emby.Dlna.PlayTo
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Stop");
+            var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Stop");
             if (command == null)
             {
                 return;
@@ -396,7 +463,13 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, avCommands.BuildPost(command, service.ServiceType, 1))
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    avCommands.BuildPost(command, service.ServiceType, 1),
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
             RestartTimer(true);
@@ -406,7 +479,7 @@ namespace Emby.Dlna.PlayTo
         {
             var avCommands = await GetAVProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "Pause");
+            var command = avCommands?.ServiceActions.FirstOrDefault(c => c.Name == "Pause");
             if (command == null)
             {
                 return;
@@ -414,7 +487,13 @@ namespace Emby.Dlna.PlayTo
 
             var service = GetAvTransportService();
 
-            await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(Properties.BaseUrl, service, command.Name, avCommands.BuildPost(command, service.ServiceType, 1))
+            await new SsdpHttpClient(_httpClientFactory)
+                .SendCommandAsync(
+                    Properties.BaseUrl,
+                    service,
+                    command.Name,
+                    avCommands.BuildPost(command, service.ServiceType, 1),
+                    cancellationToken: cancellationToken)
                 .ConfigureAwait(false);
 
             TransportState = TransportState.Paused;
@@ -528,7 +607,7 @@ namespace Emby.Dlna.PlayTo
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = rendererCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetVolume");
+            var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetVolume");
             if (command == null)
             {
                 return;
@@ -578,7 +657,7 @@ namespace Emby.Dlna.PlayTo
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
-            var command = rendererCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetMute");
+            var command = rendererCommands?.ServiceActions.FirstOrDefault(c => c.Name == "GetMute");
             if (command == null)
             {
                 return;
@@ -665,6 +744,10 @@ namespace Emby.Dlna.PlayTo
             }
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
+            if (rendererCommands == null)
+            {
+                return null;
+            }
 
             var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
                 Properties.BaseUrl,
@@ -733,6 +816,11 @@ namespace Emby.Dlna.PlayTo
 
             var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
 
+            if (rendererCommands == null)
+            {
+                return (false, null);
+            }
+
             var result = await new SsdpHttpClient(_httpClientFactory).SendCommandAsync(
                 Properties.BaseUrl,
                 service,
@@ -914,6 +1002,10 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new SsdpHttpClient(_httpClientFactory);
 
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
+            if (document == null)
+            {
+                return null;
+            }
 
             AvCommands = TransportCommands.Create(document);
             return AvCommands;
@@ -942,6 +1034,10 @@ namespace Emby.Dlna.PlayTo
             var httpClient = new SsdpHttpClient(_httpClientFactory);
             _logger.LogDebug("Dlna Device.GetRenderingProtocolAsync");
             var document = await httpClient.GetDataAsync(url, cancellationToken).ConfigureAwait(false);
+            if (document == null)
+            {
+                return null;
+            }
 
             RendererCommands = TransportCommands.Create(document);
             return RendererCommands;
@@ -973,6 +1069,10 @@ namespace Emby.Dlna.PlayTo
             var ssdpHttpClient = new SsdpHttpClient(httpClientFactory);
 
             var document = await ssdpHttpClient.GetDataAsync(url.ToString(), cancellationToken).ConfigureAwait(false);
+            if (document == null)
+            {
+                return null;
+            }
 
             var friendlyNames = new List<string>();
 
@@ -990,7 +1090,7 @@ namespace Emby.Dlna.PlayTo
 
             var deviceProperties = new DeviceInfo()
             {
-                Name = string.Join(" ", friendlyNames),
+                Name = string.Join(' ', friendlyNames),
                 BaseUrl = string.Format(CultureInfo.InvariantCulture, "http://{0}:{1}", url.Host, url.Port)
             };
 
@@ -1160,10 +1260,7 @@ namespace Emby.Dlna.PlayTo
                 return;
             }
 
-            PlaybackStart?.Invoke(this, new PlaybackStartEventArgs
-            {
-                MediaInfo = mediaInfo
-            });
+            PlaybackStart?.Invoke(this, new PlaybackStartEventArgs(mediaInfo));
         }
 
         private void OnPlaybackProgress(UBaseObject mediaInfo)
@@ -1173,27 +1270,17 @@ namespace Emby.Dlna.PlayTo
                 return;
             }
 
-            PlaybackProgress?.Invoke(this, new PlaybackProgressEventArgs
-            {
-                MediaInfo = mediaInfo
-            });
+            PlaybackProgress?.Invoke(this, new PlaybackProgressEventArgs(mediaInfo));
         }
 
         private void OnPlaybackStop(UBaseObject mediaInfo)
         {
-            PlaybackStopped?.Invoke(this, new PlaybackStoppedEventArgs
-            {
-                MediaInfo = mediaInfo
-            });
+            PlaybackStopped?.Invoke(this, new PlaybackStoppedEventArgs(mediaInfo));
         }
 
         private void OnMediaChanged(UBaseObject old, UBaseObject newMedia)
         {
-            MediaChanged?.Invoke(this, new MediaChangedEventArgs
-            {
-                OldMediaInfo = old,
-                NewMediaInfo = newMedia
-            });
+            MediaChanged?.Invoke(this, new MediaChangedEventArgs(old, newMedia));
         }
 
         /// <inheritdoc />

Emby.Dlna/PlayTo/DeviceInfo.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System.Collections.Generic;

Emby.Dlna/PlayTo/MediaChangedEventArgs.cs

@@ -1,4 +1,4 @@
-#pragma warning disable CS1591
+#pragma warning disable CS1591
 
 using System;
 
@@ -6,6 +6,12 @@ namespace Emby.Dlna.PlayTo
 {
     public class MediaChangedEventArgs : EventArgs
     {
+        public MediaChangedEventArgs(UBaseObject oldMediaInfo, UBaseObject newMediaInfo)
+        {
+            OldMediaInfo = oldMediaInfo;
+            NewMediaInfo = newMediaInfo;
+        }
+
         public UBaseObject OldMediaInfo { get; set; }
 
         public UBaseObject NewMediaInfo { get; set; }

Emby.Dlna/PlayTo/PlayToController.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -102,6 +104,22 @@ namespace Emby.Dlna.PlayTo
             _deviceDiscovery.DeviceLeft += OnDeviceDiscoveryDeviceLeft;
         }
 
+        /*
+         * Send a message to the DLNA device to notify what is the next track in the playlist.
+         */
+        private async Task SendNextTrackMessage(int currentPlayListItemIndex, CancellationToken cancellationToken)
+        {
+            if (currentPlayListItemIndex >= 0 && currentPlayListItemIndex < _playlist.Count - 1)
+            {
+                // The current playing item is indeed in the play list and we are not yet at the end of the playlist.
+                var nextItemIndex = currentPlayListItemIndex + 1;
+                var nextItem = _playlist[nextItemIndex];
+
+                // Send the SetNextAvTransport message.
+                await _device.SetNextAvTransport(nextItem.StreamUrl, GetDlnaHeaders(nextItem), nextItem.Didl, cancellationToken).ConfigureAwait(false);
+            }
+        }
+
         private void OnDeviceUnavailable()
         {
             try
@@ -132,7 +150,7 @@ namespace Emby.Dlna.PlayTo
 
         private async void OnDeviceMediaChanged(object sender, MediaChangedEventArgs e)
         {
-            if (_disposed)
+            if (_disposed || string.IsNullOrEmpty(e.OldMediaInfo.Url))
             {
                 return;
             }
@@ -156,6 +174,15 @@ namespace Emby.Dlna.PlayTo
                 var newItemProgress = GetProgressInfo(streamInfo);
 
                 await _sessionManager.OnPlaybackStart(newItemProgress).ConfigureAwait(false);
+
+                // Send a message to the DLNA device to notify what is the next track in the playlist.
+                var currentItemIndex = _playlist.FindIndex(item => item.StreamInfo.ItemId == streamInfo.ItemId);
+                if (currentItemIndex >= 0)
+                {
+                    _currentPlaylistIndex = currentItemIndex;
+                }
+
+                await SendNextTrackMessage(currentItemIndex, CancellationToken.None);
             }
             catch (Exception ex)
             {
@@ -340,10 +367,19 @@ namespace Emby.Dlna.PlayTo
             }
 
             var playlist = new PlaylistItem[len];
-            playlist[0] = CreatePlaylistItem(items[0], user, command.StartPositionTicks.Value, command.MediaSourceId, command.AudioStreamIndex, command.SubtitleStreamIndex);
+
+            // Not nullable enabled - so this is required.
+            playlist[0] = CreatePlaylistItem(
+                items[0],
+                user,
+                command.StartPositionTicks ?? 0,
+                command.MediaSourceId ?? string.Empty,
+                command.AudioStreamIndex,
+                command.SubtitleStreamIndex);
+
             for (int i = 1; i < len; i++)
             {
-                playlist[i] = CreatePlaylistItem(items[i], user, 0, null, null, null);
+                playlist[i] = CreatePlaylistItem(items[i], user, 0, string.Empty, null, null);
             }
 
             _logger.LogDebug("{0} - Playlist created", _session.DeviceName);
@@ -416,6 +452,11 @@ namespace Emby.Dlna.PlayTo
                     var newItem = CreatePlaylistItem(info.Item, user, newPosition, info.MediaSourceId, info.AudioStreamIndex, info.SubtitleStreamIndex);
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
+
+                    // Send a message to the DLNA device to notify what is the next track in the play list.
+                    var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+
                     return;
                 }
 
@@ -490,8 +531,8 @@ namespace Emby.Dlna.PlayTo
 
             if (streamInfo.MediaType == DlnaProfileType.Audio)
             {
-                return new ContentFeatureBuilder(profile)
-                    .BuildAudioHeader(
+                return ContentFeatureBuilder.BuildAudioHeader(
+                        profile,
                         streamInfo.Container,
                         streamInfo.TargetAudioCodec.FirstOrDefault(),
                         streamInfo.TargetAudioBitrate,
@@ -505,8 +546,8 @@ namespace Emby.Dlna.PlayTo
 
             if (streamInfo.MediaType == DlnaProfileType.Video)
             {
-                var list = new ContentFeatureBuilder(profile)
-                    .BuildVideoHeader(
+                var list = ContentFeatureBuilder.BuildVideoHeader(
+                        profile,
                         streamInfo.Container,
                         streamInfo.TargetVideoCodec.FirstOrDefault(),
                         streamInfo.TargetAudioCodec.FirstOrDefault(),
@@ -614,6 +655,9 @@ namespace Emby.Dlna.PlayTo
 
             await _device.SetAvTransport(currentitem.StreamUrl, GetDlnaHeaders(currentitem), currentitem.Didl, cancellationToken).ConfigureAwait(false);
 
+            // Send a message to the DLNA device to notify what is the next track in the play list.
+            await SendNextTrackMessage(index, cancellationToken);
+
             var streamInfo = currentitem.StreamInfo;
             if (streamInfo.StartPositionTicks > 0 && EnableClientSideSeek(streamInfo))
             {
@@ -727,6 +771,10 @@ namespace Emby.Dlna.PlayTo
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
 
+                    // Send a message to the DLNA device to notify what is the next track in the play list.
+                    var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+
                     if (EnableClientSideSeek(newItem.StreamInfo))
                     {
                         await SeekAfterTransportChange(newPosition, CancellationToken.None).ConfigureAwait(false);
@@ -752,6 +800,10 @@ namespace Emby.Dlna.PlayTo
 
                     await _device.SetAvTransport(newItem.StreamUrl, GetDlnaHeaders(newItem), newItem.Didl, CancellationToken.None).ConfigureAwait(false);
 
+                    // Send a message to the DLNA device to notify what is the next track in the play list.
+                    var newItemIndex = _playlist.FindIndex(item => item.StreamUrl == newItem.StreamUrl);
+                    await SendNextTrackMessage(newItemIndex, CancellationToken.None);
+
                     if (EnableClientSideSeek(newItem.StreamInfo) && newPosition > 0)
                     {
                         await SeekAfterTransportChange(newPosition, CancellationToken.None).ConfigureAwait(false);
@@ -768,7 +820,7 @@ namespace Emby.Dlna.PlayTo
             var currentWait = 0;
             while (_device.TransportState != TransportState.Playing && currentWait < MaxWait)
             {
-                await Task.Delay(Interval).ConfigureAwait(false);
+                await Task.Delay(Interval, cancellationToken).ConfigureAwait(false);
                 currentWait += Interval;
             }
 
@@ -817,7 +869,7 @@ namespace Emby.Dlna.PlayTo
                 return SendPlayCommand(data as PlayRequest, cancellationToken);
             }
 
-            if (name == SessionMessageType.PlayState)
+            if (name == SessionMessageType.Playstate)
             {
                 return SendPlaystateCommand(data as PlaystateRequest, cancellationToken);
             }
@@ -887,16 +939,16 @@ namespace Emby.Dlna.PlayTo
 
                 var parts = url.Split('/');
 
-                for (var i = 0; i < parts.Length; i++)
+                for (var i = 0; i < parts.Length - 1; i++)
                 {
                     var part = parts[i];
 
                     if (string.Equals(part, "audio", StringComparison.OrdinalIgnoreCase) ||
                         string.Equals(part, "videos", StringComparison.OrdinalIgnoreCase))
                     {
-                        if (parts.Length > i + 1)
+                        if (Guid.TryParse(parts[i + 1], out var result))
                         {
-                            return Guid.Parse(parts[i + 1]);
+                            return result;
                         }
                     }
                 }
@@ -934,11 +986,7 @@ namespace Emby.Dlna.PlayTo
                 request.DeviceId = values.GetValueOrDefault("DeviceId");
                 request.MediaSourceId = values.GetValueOrDefault("MediaSourceId");
                 request.LiveStreamId = values.GetValueOrDefault("LiveStreamId");
-
-                // Be careful, IsDirectStream==true by default (Static != false or not in query).
-                // See initialization of StreamingRequestDto in AudioController.GetAudioStream() method : Static = @static ?? true.
-                request.IsDirectStream = !string.Equals("false", values.GetValueOrDefault("Static"), StringComparison.OrdinalIgnoreCase);
-
+                request.IsDirectStream = string.Equals("true", values.GetValueOrDefault("Static"), StringComparison.OrdinalIgnoreCase);
                 request.AudioStreamIndex = GetIntValue(values, "AudioStreamIndex");
                 request.SubtitleStreamIndex = GetIntValue(values, "SubtitleStreamIndex");
                 request.StartPositionTicks = GetLongValue(values, "StartPositionTicks");

Emby.Dlna/PlayTo/PlayToManager.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -178,12 +180,17 @@ namespace Emby.Dlna.PlayTo
             if (controller == null)
             {
                 var device = await Device.CreateuPnpDeviceAsync(uri, _httpClientFactory, _logger, cancellationToken).ConfigureAwait(false);
+                if (device == null)
+                {
+                    _logger.LogError("Ignoring device as xml response is invalid.");
+                    return;
+                }
 
                 string deviceName = device.Properties.Name;
 
                 _sessionManager.UpdateDeviceName(sessionInfo.Id, deviceName);
 
-                string serverAddress = _appHost.GetSmartApiUrl(info.LocalIpAddress);
+                string serverAddress = _appHost.GetSmartApiUrl(info.RemoteIpAddress);
 
                 controller = new PlayToController(
                     sessionInfo,

Emby.Dlna/PlayTo/PlaybackProgressEventArgs.cs

@@ -6,6 +6,11 @@ namespace Emby.Dlna.PlayTo
 {
     public class PlaybackProgressEventArgs : EventArgs
     {
+        public PlaybackProgressEventArgs(UBaseObject mediaInfo)
+        {
+            MediaInfo = mediaInfo;
+        }
+
         public UBaseObject MediaInfo { get; set; }
     }
 }

Emby.Dlna/PlayTo/PlaybackStartEventArgs.cs

@@ -6,6 +6,11 @@ namespace Emby.Dlna.PlayTo
 {
     public class PlaybackStartEventArgs : EventArgs
     {
+        public PlaybackStartEventArgs(UBaseObject mediaInfo)
+        {
+            MediaInfo = mediaInfo;
+        }
+
         public UBaseObject MediaInfo { get; set; }
     }
 }

Emby.Dlna/PlayTo/PlaybackStoppedEventArgs.cs

@@ -6,6 +6,11 @@ namespace Emby.Dlna.PlayTo
 {
     public class PlaybackStoppedEventArgs : EventArgs
     {
+        public PlaybackStoppedEventArgs(UBaseObject mediaInfo)
+        {
+            MediaInfo = mediaInfo;
+        }
+
         public UBaseObject MediaInfo { get; set; }
     }
 }

Emby.Dlna/PlayTo/PlaylistItem.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using MediaBrowser.Model.Dlna;

Emby.Dlna/PlayTo/PlaylistItemFactory.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System.IO;

Emby.Dlna/PlayTo/SsdpHttpClient.cs

@@ -1,8 +1,9 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.Globalization;
-using System.IO;
 using System.Net.Http;
 using System.Net.Mime;
 using System.Text;
@@ -45,10 +46,10 @@ namespace Emby.Dlna.PlayTo
                     cancellationToken)
                 .ConfigureAwait(false);
             await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
-            using var reader = new StreamReader(stream, Encoding.UTF8);
-            return XDocument.Parse(
-                await reader.ReadToEndAsync().ConfigureAwait(false),
-                LoadOptions.PreserveWhitespace);
+            return await XDocument.LoadAsync(
+                stream,
+                LoadOptions.PreserveWhitespace,
+                cancellationToken).ConfigureAwait(false);
         }
 
         private static string NormalizeServiceUrl(string baseUrl, string serviceUrl)
@@ -94,10 +95,17 @@ namespace Emby.Dlna.PlayTo
             options.Headers.TryAddWithoutValidation("FriendlyName.DLNA.ORG", FriendlyName);
             using var response = await _httpClientFactory.CreateClient(NamedClient.Default).SendAsync(options, HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
             await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false);
-            using var reader = new StreamReader(stream, Encoding.UTF8);
-            return XDocument.Parse(
-                await reader.ReadToEndAsync().ConfigureAwait(false),
-                LoadOptions.PreserveWhitespace);
+            try
+            {
+                return await XDocument.LoadAsync(
+                    stream,
+                    LoadOptions.PreserveWhitespace,
+                    cancellationToken).ConfigureAwait(false);
+            }
+            catch
+            {
+                return null;
+            }
         }
 
         private async Task<HttpResponseMessage> PostSoapDataAsync(

Emby.Dlna/PlayTo/TransportCommands.cs

@@ -13,12 +13,10 @@ namespace Emby.Dlna.PlayTo
     public class TransportCommands
     {
         private const string CommandBase = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n" + "<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">" + "<SOAP-ENV:Body>" + "<m:{0} xmlns:m=\"{1}\">" + "{2}" + "</m:{0}>" + "</SOAP-ENV:Body></SOAP-ENV:Envelope>";
-        private List<StateVariable> _stateVariables = new List<StateVariable>();
-        private List<ServiceAction> _serviceActions = new List<ServiceAction>();
 
-        public List<StateVariable> StateVariables => _stateVariables;
+        public List<StateVariable> StateVariables { get; } = new List<StateVariable>();
 
-        public List<ServiceAction> ServiceActions => _serviceActions;
+        public List<ServiceAction> ServiceActions { get; } = new List<ServiceAction>();
 
         public static TransportCommands Create(XDocument document)
         {
@@ -48,7 +46,7 @@ namespace Emby.Dlna.PlayTo
         {
             var serviceAction = new ServiceAction
             {
-                Name = container.GetValue(UPnpNamespaces.Svc + "name"),
+                Name = container.GetValue(UPnpNamespaces.Svc + "name") ?? string.Empty,
             };
 
             var argumentList = serviceAction.ArgumentList;
@@ -70,9 +68,9 @@ namespace Emby.Dlna.PlayTo
 
             return new Argument
             {
-                Name = container.GetValue(UPnpNamespaces.Svc + "name"),
-                Direction = container.GetValue(UPnpNamespaces.Svc + "direction"),
-                RelatedStateVariable = container.GetValue(UPnpNamespaces.Svc + "relatedStateVariable")
+                Name = container.GetValue(UPnpNamespaces.Svc + "name") ?? string.Empty,
+                Direction = container.GetValue(UPnpNamespaces.Svc + "direction") ?? string.Empty,
+                RelatedStateVariable = container.GetValue(UPnpNamespaces.Svc + "relatedStateVariable") ?? string.Empty
             };
         }
 
@@ -91,8 +89,8 @@ namespace Emby.Dlna.PlayTo
 
             return new StateVariable
             {
-                Name = container.GetValue(UPnpNamespaces.Svc + "name"),
-                DataType = container.GetValue(UPnpNamespaces.Svc + "dataType"),
+                Name = container.GetValue(UPnpNamespaces.Svc + "name") ?? string.Empty,
+                DataType = container.GetValue(UPnpNamespaces.Svc + "dataType") ?? string.Empty,
                 AllowedValues = allowedValues
             };
         }
@@ -168,7 +166,7 @@ namespace Emby.Dlna.PlayTo
             return string.Format(CultureInfo.InvariantCulture, CommandBase, action.Name, xmlNamesapce, stateString);
         }
 
-        private string BuildArgumentXml(Argument argument, string value, string commandParameter = "")
+        private string BuildArgumentXml(Argument argument, string? value, string commandParameter = "")
         {
             var state = StateVariables.FirstOrDefault(a => string.Equals(a.Name, argument.RelatedStateVariable, StringComparison.OrdinalIgnoreCase));
 

Emby.Dlna/PlayTo/TransportState.cs

@@ -1,5 +1,4 @@
 #pragma warning disable CS1591
-#pragma warning disable SA1602
 
 namespace Emby.Dlna.PlayTo
 {

Emby.Dlna/PlayTo/uBaseObject.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;

Emby.Dlna/Profiles/DefaultProfile.cs

@@ -1,5 +1,7 @@
 #pragma warning disable CS1591
 
+using System;
+using System.Globalization;
 using System.Linq;
 using MediaBrowser.Model.Dlna;
 
@@ -10,6 +12,7 @@ namespace Emby.Dlna.Profiles
     {
         public DefaultProfile()
         {
+            Id = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture);
             Name = "Generic Device";
 
             ProtocolInfo = "http-get:*:video/mpeg:*,http-get:*:video/mp4:*,http-get:*:video/vnd.dlna.mpeg-tts:*,http-get:*:video/avi:*,http-get:*:video/x-matroska:*,http-get:*:video/x-ms-wmv:*,http-get:*:video/wtv:*,http-get:*:audio/mpeg:*,http-get:*:audio/mp3:*,http-get:*:audio/mp4:*,http-get:*:audio/x-ms-wma:*,http-get:*:audio/wav:*,http-get:*:audio/L16:*,http-get:*:image/jpeg:*,http-get:*:image/png:*,http-get:*:image/gif:*,http-get:*:image/tiff:*";

Emby.Dlna/Profiles/SonyBravia2010Profile.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Profiles
 
             Identification = new DeviceIdentification
             {
-                FriendlyName = @"KDL-\d{2}[EHLNPB]X\d[01]\d.*",
+                FriendlyName = @"KDL-[0-9]{2}[EHLNPB]X[0-9][01][0-9].*",
                 Manufacturer = "Sony",
 
                 Headers = new[]
@@ -21,7 +21,7 @@ namespace Emby.Dlna.Profiles
                     new HttpHeaderInfo
                     {
                         Name = "X-AV-Client-Info",
-                        Value = @".*KDL-\d{2}[EHLNPB]X\d[01]\d.*",
+                        Value = @".*KDL-[0-9]{2}[EHLNPB]X[0-9][01][0-9].*",
                         Match = HeaderMatchType.Regex
                     }
                 }

Emby.Dlna/Profiles/SonyBravia2011Profile.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Profiles
 
             Identification = new DeviceIdentification
             {
-                FriendlyName = @"KDL-\d{2}([A-Z]X\d2\d|CX400).*",
+                FriendlyName = @"KDL-[0-9]{2}([A-Z]X[0-9]2[0-9]|CX400).*",
                 Manufacturer = "Sony",
 
                 Headers = new[]
@@ -21,7 +21,7 @@ namespace Emby.Dlna.Profiles
                     new HttpHeaderInfo
                     {
                         Name = "X-AV-Client-Info",
-                        Value = @".*KDL-\d{2}([A-Z]X\d2\d|CX400).*",
+                        Value = @".*KDL-[0-9]{2}([A-Z]X[0-9]2[0-9]|CX400).*",
                         Match = HeaderMatchType.Regex
                     }
                 }

Emby.Dlna/Profiles/SonyBravia2012Profile.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Profiles
 
             Identification = new DeviceIdentification
             {
-                FriendlyName = @"KDL-\d{2}[A-Z]X\d5(\d|G).*",
+                FriendlyName = @"KDL-[0-9]{2}[A-Z]X[0-9]5([0-9]|G).*",
                 Manufacturer = "Sony",
 
                 Headers = new[]
@@ -21,7 +21,7 @@ namespace Emby.Dlna.Profiles
                     new HttpHeaderInfo
                     {
                         Name = "X-AV-Client-Info",
-                        Value = @".*KDL-\d{2}[A-Z]X\d5(\d|G).*",
+                        Value = @".*KDL-[0-9]{2}[A-Z]X[0-9]5([0-9]|G).*",
                         Match = HeaderMatchType.Regex
                     }
                 }

Emby.Dlna/Profiles/SonyBravia2013Profile.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Profiles
 
             Identification = new DeviceIdentification
             {
-                FriendlyName = @"KDL-\d{2}[WR][5689]\d{2}A.*",
+                FriendlyName = @"KDL-[0-9]{2}[WR][5689][0-9]{2}A.*",
                 Manufacturer = "Sony",
 
                 Headers = new[]
@@ -21,7 +21,7 @@ namespace Emby.Dlna.Profiles
                     new HttpHeaderInfo
                     {
                         Name = "X-AV-Client-Info",
-                        Value = @".*KDL-\d{2}[WR][5689]\d{2}A.*",
+                        Value = @".*KDL-[0-9]{2}[WR][5689][0-9]{2}A.*",
                         Match = HeaderMatchType.Regex
                     }
                 }

Emby.Dlna/Profiles/SonyBravia2014Profile.cs

@@ -13,7 +13,7 @@ namespace Emby.Dlna.Profiles
 
             Identification = new DeviceIdentification
             {
-                FriendlyName = @"(KDL-\d{2}W[5-9]\d{2}B|KDL-\d{2}R480|XBR-\d{2}X[89]\d{2}B|KD-\d{2}[SX][89]\d{3}B).*",
+                FriendlyName = @"(KDL-[0-9]{2}W[5-9][0-9]{2}B|KDL-[0-9]{2}R480|XBR-[0-9]{2}X[89][0-9]{2}B|KD-[0-9]{2}[SX][89][0-9]{3}B).*",
                 Manufacturer = "Sony",
 
                 Headers = new[]
@@ -21,7 +21,7 @@ namespace Emby.Dlna.Profiles
                     new HttpHeaderInfo
                     {
                         Name = "X-AV-Client-Info",
-                        Value = @".*(KDL-\d{2}W[5-9]\d{2}B|KDL-\d{2}R480|XBR-\d{2}X[89]\d{2}B|KD-\d{2}[SX][89]\d{3}B).*",
+                        Value = @".*(KDL-[0-9]{2}W[5-9][0-9]{2}B|KDL-[0-9]{2}R480|XBR-[0-9]{2}X[89][0-9]{2}B|KD-[0-9]{2}[SX][89][0-9]{3}B).*",
                         Match = HeaderMatchType.Regex
                     }
                 }

Emby.Dlna/Profiles/SonyPs3Profile.cs

@@ -52,7 +52,7 @@ namespace Emby.Dlna.Profiles
                     Container = "ts,mpegts",
                     Type = DlnaProfileType.Video,
                     VideoCodec = "mpeg1video,mpeg2video,h264",
-                    AudioCodec = "ac3,mp2,mp3,aac"
+                    AudioCodec = "aac,ac3,mp2"
                 },
                 new DirectPlayProfile
                 {
@@ -92,7 +92,7 @@ namespace Emby.Dlna.Profiles
                 {
                     Container = "ts",
                     VideoCodec = "h264",
-                    AudioCodec = "ac3,aac,mp3",
+                    AudioCodec = "aac,ac3,mp2",
                     Type = DlnaProfileType.Video
                 },
                 new TranscodingProfile

Emby.Dlna/Profiles/SonyPs4Profile.cs

@@ -52,7 +52,7 @@ namespace Emby.Dlna.Profiles
                     Container = "ts,mpegts",
                     Type = DlnaProfileType.Video,
                     VideoCodec = "mpeg1video,mpeg2video,h264",
-                    AudioCodec = "ac3,mp2,mp3,aac"
+                    AudioCodec = "aac,ac3,mp2"
                 },
                 new DirectPlayProfile
                 {
@@ -94,7 +94,7 @@ namespace Emby.Dlna.Profiles
                 {
                     Container = "ts",
                     VideoCodec = "h264",
-                    AudioCodec = "mp3",
+                    AudioCodec = "aac,ac3,mp2",
                     Type = DlnaProfileType.Video
                 },
                 new TranscodingProfile

Emby.Dlna/Profiles/Xml/Sony Bravia (2010).xml

@@ -3,10 +3,10 @@
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Name>Sony Bravia (2010)</Name>
   <Identification>
-    <FriendlyName>KDL-\d{2}[EHLNPB]X\d[01]\d.*</FriendlyName>
+    <FriendlyName>KDL-[0-9]{2}[EHLNPB]X[0-9][01][0-9].*</FriendlyName>
     <Manufacturer>Sony</Manufacturer>
     <Headers>
-      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-\d{2}[EHLNPB]X\d[01]\d.*" match="Regex" />
+      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-[0-9]{2}[EHLNPB]X[0-9][01][0-9].*" match="Regex" />
     </Headers>
   </Identification>
   <Manufacturer>Microsoft Corporation</Manufacturer>

Emby.Dlna/Profiles/Xml/Sony Bravia (2011).xml

@@ -3,10 +3,10 @@
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Name>Sony Bravia (2011)</Name>
   <Identification>
-    <FriendlyName>KDL-\d{2}([A-Z]X\d2\d|CX400).*</FriendlyName>
+    <FriendlyName>KDL-[0-9]{2}([A-Z]X[0-9]2[0-9]|CX400).*</FriendlyName>
     <Manufacturer>Sony</Manufacturer>
     <Headers>
-      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-\d{2}([A-Z]X\d2\d|CX400).*" match="Regex" />
+      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-[0-9]{2}([A-Z]X[0-9]2[0-9]|CX400).*" match="Regex" />
     </Headers>
   </Identification>
   <Manufacturer>Microsoft Corporation</Manufacturer>

Emby.Dlna/Profiles/Xml/Sony Bravia (2012).xml

@@ -3,10 +3,10 @@
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Name>Sony Bravia (2012)</Name>
   <Identification>
-    <FriendlyName>KDL-\d{2}[A-Z]X\d5(\d|G).*</FriendlyName>
+    <FriendlyName>KDL-[0-9]{2}[A-Z]X[0-9]5([0-9]|G).*</FriendlyName>
     <Manufacturer>Sony</Manufacturer>
     <Headers>
-      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-\d{2}[A-Z]X\d5(\d|G).*" match="Regex" />
+      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-[0-9]{2}[A-Z]X[0-9]5([0-9]|G).*" match="Regex" />
     </Headers>
   </Identification>
   <Manufacturer>Microsoft Corporation</Manufacturer>

Emby.Dlna/Profiles/Xml/Sony Bravia (2013).xml

@@ -3,10 +3,10 @@
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Name>Sony Bravia (2013)</Name>
   <Identification>
-    <FriendlyName>KDL-\d{2}[WR][5689]\d{2}A.*</FriendlyName>
+    <FriendlyName>KDL-[0-9]{2}[WR][5689][0-9]{2}A.*</FriendlyName>
     <Manufacturer>Sony</Manufacturer>
     <Headers>
-      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-\d{2}[WR][5689]\d{2}A.*" match="Regex" />
+      <HttpHeaderInfo name="X-AV-Client-Info" value=".*KDL-[0-9]{2}[WR][5689][0-9]{2}A.*" match="Regex" />
     </Headers>
   </Identification>
   <Manufacturer>Microsoft Corporation</Manufacturer>

Emby.Dlna/Profiles/Xml/Sony Bravia (2014).xml

@@ -3,10 +3,10 @@
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <Name>Sony Bravia (2014)</Name>
   <Identification>
-    <FriendlyName>(KDL-\d{2}W[5-9]\d{2}B|KDL-\d{2}R480|XBR-\d{2}X[89]\d{2}B|KD-\d{2}[SX][89]\d{3}B).*</FriendlyName>
+    <FriendlyName>(KDL-[0-9]{2}W[5-9][0-9]{2}B|KDL-[0-9]{2}R480|XBR-[0-9]{2}X[89][0-9]{2}B|KD-[0-9]{2}[SX][89][0-9]{3}B).*</FriendlyName>
     <Manufacturer>Sony</Manufacturer>
     <Headers>
-      <HttpHeaderInfo name="X-AV-Client-Info" value=".*(KDL-\d{2}W[5-9]\d{2}B|KDL-\d{2}R480|XBR-\d{2}X[89]\d{2}B|KD-\d{2}[SX][89]\d{3}B).*" match="Regex" />
+      <HttpHeaderInfo name="X-AV-Client-Info" value=".*(KDL-[0-9]{2}W[5-9][0-9]{2}B|KDL-[0-9]{2}R480|XBR-[0-9]{2}X[89][0-9]{2}B|KD-[0-9]{2}[SX][89][0-9]{3}B).*" match="Regex" />
     </Headers>
   </Identification>
   <Manufacturer>Microsoft Corporation</Manufacturer>

Emby.Dlna/Profiles/Xml/Sony PlayStation 3.xml

@@ -38,7 +38,7 @@
   <XmlRootAttributes />
   <DirectPlayProfiles>
     <DirectPlayProfile container="avi" audioCodec="mp2,mp3" videoCodec="mpeg4" type="Video" />
-    <DirectPlayProfile container="ts,mpegts" audioCodec="ac3,mp2,mp3,aac" videoCodec="mpeg1video,mpeg2video,h264" type="Video" />
+    <DirectPlayProfile container="ts,mpegts" audioCodec="aac,ac3,mp2" videoCodec="mpeg1video,mpeg2video,h264" type="Video" />
     <DirectPlayProfile container="mpeg" audioCodec="mp2" videoCodec="mpeg1video,mpeg2video" type="Video" />
     <DirectPlayProfile container="mp4" audioCodec="aac,ac3" videoCodec="h264,mpeg4" type="Video" />
     <DirectPlayProfile container="aac,mp3,wav" type="Audio" />
@@ -46,7 +46,7 @@
   </DirectPlayProfiles>
   <TranscodingProfiles>
     <TranscodingProfile container="mp3" type="Audio" audioCodec="mp3" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
-    <TranscodingProfile container="ts" type="Video" videoCodec="h264" audioCodec="ac3,aac,mp3" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
+    <TranscodingProfile container="ts" type="Video" videoCodec="h264" audioCodec="aac,ac3,mp2" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
     <TranscodingProfile container="jpeg" type="Photo" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
   </TranscodingProfiles>
   <ContainerProfiles>

Emby.Dlna/Profiles/Xml/Sony PlayStation 4.xml

@@ -38,7 +38,7 @@
   <XmlRootAttributes />
   <DirectPlayProfiles>
     <DirectPlayProfile container="avi" audioCodec="mp2,mp3" videoCodec="mpeg4" type="Video" />
-    <DirectPlayProfile container="ts,mpegts" audioCodec="ac3,mp2,mp3,aac" videoCodec="mpeg1video,mpeg2video,h264" type="Video" />
+    <DirectPlayProfile container="ts,mpegts" audioCodec="aac,ac3,mp2" videoCodec="mpeg1video,mpeg2video,h264" type="Video" />
     <DirectPlayProfile container="mpeg" audioCodec="mp2" videoCodec="mpeg1video,mpeg2video" type="Video" />
     <DirectPlayProfile container="mp4,mkv,m4v" audioCodec="aac,ac3" videoCodec="h264,mpeg4" type="Video" />
     <DirectPlayProfile container="aac,mp3,wav" type="Audio" />
@@ -46,7 +46,7 @@
   </DirectPlayProfiles>
   <TranscodingProfiles>
     <TranscodingProfile container="mp3" type="Audio" audioCodec="mp3" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Bytes" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
-    <TranscodingProfile container="ts" type="Video" videoCodec="h264" audioCodec="mp3" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
+    <TranscodingProfile container="ts" type="Video" videoCodec="h264" audioCodec="aac,ac3,mp2" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
     <TranscodingProfile container="jpeg" type="Photo" estimateContentLength="false" enableMpegtsM2TsMode="false" transcodeSeekInfo="Auto" copyTimestamps="false" context="Streaming" enableSubtitlesInManifest="false" minSegments="0" segmentLength="0" breakOnNonKeyFrames="false" />
   </TranscodingProfiles>
   <ContainerProfiles>

Emby.Dlna/Server/DescriptionXmlBuilder.cs

@@ -250,7 +250,8 @@ namespace Emby.Dlna.Server
 
             url = _serverAddress.TrimEnd('/') + "/dlna/" + _serverUdn + "/" + url.TrimStart('/');
 
-            return SecurityElement.Escape(url);
+            // TODO: @bond remove null-coalescing operator when https://github.com/dotnet/runtime/pull/52442 is merged/released
+            return SecurityElement.Escape(url) ?? string.Empty;
         }
 
         private IEnumerable<DeviceIcon> GetIcons()

Emby.Dlna/Service/BaseControlHandler.cs

@@ -6,9 +6,9 @@ using System.IO;
 using System.Text;
 using System.Threading.Tasks;
 using System.Xml;
+using Diacritics.Extensions;
 using Emby.Dlna.Didl;
 using MediaBrowser.Controller.Configuration;
-using MediaBrowser.Controller.Extensions;
 using Microsoft.Extensions.Logging;
 
 namespace Emby.Dlna.Service
@@ -47,9 +47,9 @@ namespace Emby.Dlna.Service
 
         private async Task<ControlResponse> ProcessControlRequestInternalAsync(ControlRequest request)
         {
-            ControlRequestInfo requestInfo = null;
+            ControlRequestInfo? requestInfo = null;
 
-            using (var streamReader = new StreamReader(request.InputXml))
+            using (var streamReader = new StreamReader(request.InputXml, Encoding.UTF8))
             {
                 var readerSettings = new XmlReaderSettings()
                 {
@@ -95,11 +95,7 @@ namespace Emby.Dlna.Service
 
             var xml = builder.ToString().Replace("xmlns:m=", "xmlns:u=", StringComparison.Ordinal);
 
-            var controlResponse = new ControlResponse
-            {
-                Xml = xml,
-                IsSuccessful = true
-            };
+            var controlResponse = new ControlResponse(xml, true);
 
             controlResponse.Headers.Add("EXT", string.Empty);
 
@@ -151,7 +147,7 @@ namespace Emby.Dlna.Service
 
         private async Task<ControlRequestInfo> ParseBodyTagAsync(XmlReader reader)
         {
-            string namespaceURI = null, localName = null;
+            string? namespaceURI = null, localName = null;
 
             await reader.MoveToContentAsync().ConfigureAwait(false);
             await reader.ReadAsync().ConfigureAwait(false);
@@ -210,7 +206,7 @@ namespace Emby.Dlna.Service
             }
         }
 
-        protected abstract void WriteResult(string methodName, IDictionary<string, string> methodParams, XmlWriter xmlWriter);
+        protected abstract void WriteResult(string methodName, IReadOnlyDictionary<string, string> methodParams, XmlWriter xmlWriter);
 
         private void LogRequest(ControlRequest request)
         {

Emby.Dlna/Service/ControlErrorHandler.cs

@@ -46,11 +46,7 @@ namespace Emby.Dlna.Service
                 writer.WriteEndDocument();
             }
 
-            return new ControlResponse
-            {
-                Xml = builder.ToString(),
-                IsSuccessful = false
-            };
+            return new ControlResponse(builder.ToString(), false);
         }
     }
 }

Emby.Dlna/Ssdp/DeviceDiscovery.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -69,7 +71,7 @@ namespace Emby.Dlna.Ssdp
         {
             lock (_syncLock)
             {
-                if (_listenerCount > 0 && _deviceLocator == null)
+                if (_listenerCount > 0 && _deviceLocator == null && _commsServer != null)
                 {
                     _deviceLocator = new SsdpDeviceLocator(_commsServer);
 
@@ -104,7 +106,7 @@ namespace Emby.Dlna.Ssdp
                 {
                     Location = e.DiscoveredDevice.DescriptionLocation,
                     Headers = headers,
-                    LocalIpAddress = e.LocalIpAddress
+                    RemoteIpAddress = e.RemoteIpAddress
                 });
 
             DeviceDiscoveredInternal?.Invoke(this, args);

Emby.Dlna/Ssdp/SsdpExtensions.cs

@@ -7,21 +7,21 @@ namespace Emby.Dlna.Ssdp
 {
     public static class SsdpExtensions
     {
-        public static string GetValue(this XElement container, XName name)
+        public static string? GetValue(this XElement container, XName name)
         {
             var node = container.Element(name);
 
             return node?.Value;
         }
 
-        public static string GetAttributeValue(this XElement container, XName name)
+        public static string? GetAttributeValue(this XElement container, XName name)
         {
             var node = container.Attribute(name);
 
             return node?.Value;
         }
 
-        public static string GetDescendantValue(this XElement container, XName name)
+        public static string? GetDescendantValue(this XElement container, XName name)
             => container.Descendants(name).FirstOrDefault()?.Value;
     }
 }

Emby.Drawing/Emby.Drawing.csproj

@@ -9,8 +9,7 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Nullable>enable</Nullable>
+    <AnalysisMode>AllDisabledByDefault</AnalysisMode>
   </PropertyGroup>
 
   <ItemGroup>
@@ -25,14 +24,9 @@
 
   <!-- Code analysers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-
 </Project>

Emby.Drawing/ImageProcessor.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
 using MediaBrowser.Common.Extensions;
@@ -171,21 +172,31 @@ namespace Emby.Drawing
                 return (originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
             }
 
-            ImageDimensions newSize = ImageHelper.GetNewImageSize(options, null);
             int quality = options.Quality;
 
             ImageFormat outputFormat = GetOutputFormat(options.SupportedOutputFormats, requiresTransparency);
-            string cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, outputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.Blur, options.BackgroundColor, options.ForegroundLayer);
+            string cacheFilePath = GetCacheFilePath(
+                originalImagePath,
+                options.Width,
+                options.Height,
+                options.MaxWidth,
+                options.MaxHeight,
+                options.FillWidth,
+                options.FillHeight,
+                quality,
+                dateModified,
+                outputFormat,
+                options.AddPlayedIndicator,
+                options.PercentPlayed,
+                options.UnplayedCount,
+                options.Blur,
+                options.BackgroundColor,
+                options.ForegroundLayer);
 
             try
             {
                 if (!File.Exists(cacheFilePath))
                 {
-                    if (options.CropWhiteSpace && !SupportsTransparency(originalImagePath))
-                    {
-                        options.CropWhiteSpace = false;
-                    }
-
                     string resultPath = _imageEncoder.EncodeImage(originalImagePath, dateModified, cacheFilePath, autoOrient, orientation, quality, options, outputFormat);
 
                     if (string.Equals(resultPath, originalImagePath, StringComparison.OrdinalIgnoreCase))
@@ -246,48 +257,111 @@ namespace Emby.Drawing
         /// <summary>
         /// Gets the cache file path based on a set of parameters.
         /// </summary>
-        private string GetCacheFilePath(string originalPath, ImageDimensions outputSize, int quality, DateTime dateModified, ImageFormat format, bool addPlayedIndicator, double percentPlayed, int? unwatchedCount, int? blur, string backgroundColor, string foregroundLayer)
+        private string GetCacheFilePath(
+            string originalPath,
+            int? width,
+            int? height,
+            int? maxWidth,
+            int? maxHeight,
+            int? fillWidth,
+            int? fillHeight,
+            int quality,
+            DateTime dateModified,
+            ImageFormat format,
+            bool addPlayedIndicator,
+            double percentPlayed,
+            int? unwatchedCount,
+            int? blur,
+            string backgroundColor,
+            string foregroundLayer)
         {
-            var filename = originalPath
-                + "width=" + outputSize.Width
-                + "height=" + outputSize.Height
-                + "quality=" + quality
-                + "datemodified=" + dateModified.Ticks
-                + "f=" + format;
+            var filename = new StringBuilder(256);
+            filename.Append(originalPath);
+
+            filename.Append(",quality=");
+            filename.Append(quality);
+
+            filename.Append(",datemodified=");
+            filename.Append(dateModified.Ticks);
+
+            filename.Append(",f=");
+            filename.Append(format);
+
+            if (width.HasValue)
+            {
+                filename.Append(",width=");
+                filename.Append(width.Value);
+            }
+
+            if (height.HasValue)
+            {
+                filename.Append(",height=");
+                filename.Append(height.Value);
+            }
+
+            if (maxWidth.HasValue)
+            {
+                filename.Append(",maxwidth=");
+                filename.Append(maxWidth.Value);
+            }
+
+            if (maxHeight.HasValue)
+            {
+                filename.Append(",maxheight=");
+                filename.Append(maxHeight.Value);
+            }
+
+            if (fillWidth.HasValue)
+            {
+                filename.Append(",fillwidth=");
+                filename.Append(fillWidth.Value);
+            }
+
+            if (fillHeight.HasValue)
+            {
+                filename.Append(",fillheight=");
+                filename.Append(fillHeight.Value);
+            }
 
             if (addPlayedIndicator)
             {
-                filename += "pl=true";
+                filename.Append(",pl=true");
             }
 
             if (percentPlayed > 0)
             {
-                filename += "p=" + percentPlayed;
+                filename.Append(",p=");
+                filename.Append(percentPlayed);
             }
 
             if (unwatchedCount.HasValue)
             {
-                filename += "p=" + unwatchedCount.Value;
+                filename.Append(",p=");
+                filename.Append(unwatchedCount.Value);
             }
 
             if (blur.HasValue)
             {
-                filename += "blur=" + blur.Value;
+                filename.Append(",blur=");
+                filename.Append(blur.Value);
             }
 
             if (!string.IsNullOrEmpty(backgroundColor))
             {
-                filename += "b=" + backgroundColor;
+                filename.Append(",b=");
+                filename.Append(backgroundColor);
             }
 
             if (!string.IsNullOrEmpty(foregroundLayer))
             {
-                filename += "fl=" + foregroundLayer;
+                filename.Append(",fl=");
+                filename.Append(foregroundLayer);
             }
 
-            filename += "v=" + Version;
+            filename.Append(",v=");
+            filename.Append(Version);
 
-            return GetCachePath(ResizedImageCachePath, filename, "." + format.ToString().ToLowerInvariant());
+            return GetCachePath(ResizedImageCachePath, filename.ToString(), "." + format.ToString().ToLowerInvariant());
         }
 
         /// <inheritdoc />
@@ -352,8 +426,13 @@ namespace Emby.Drawing
         }
 
         /// <inheritdoc />
-        public string GetImageCacheTag(User user)
+        public string? GetImageCacheTag(User user)
         {
+            if (user.ProfileImage == null)
+            {
+                return null;
+            }
+
             return (user.ProfileImage.Path + user.ProfileImage.LastModified.Ticks).GetMD5()
                 .ToString("N", CultureInfo.InvariantCulture);
         }

Emby.Drawing/NullImageEncoder.cs

@@ -32,7 +32,7 @@ namespace Emby.Drawing
             => throw new NotImplementedException();
 
         /// <inheritdoc />
-        public string EncodeImage(string inputPath, DateTime dateModified, string outputPath, bool autoOrient, ImageOrientation? orientation, int quality, ImageProcessingOptions options, ImageFormat selectedOutputFormat)
+        public string EncodeImage(string inputPath, DateTime dateModified, string outputPath, bool autoOrient, ImageOrientation? orientation, int quality, ImageProcessingOptions options, ImageFormat outputFormat)
         {
             throw new NotImplementedException();
         }

Emby.Naming/Audio/AudioFileParser.cs

@@ -1,7 +1,7 @@
 using System;
 using System.IO;
-using System.Linq;
 using Emby.Naming.Common;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.Audio
 {
@@ -18,8 +18,8 @@ namespace Emby.Naming.Audio
         /// <returns>True if file at path is audio file.</returns>
         public static bool IsAudioFile(string path, NamingOptions options)
         {
-            var extension = Path.GetExtension(path);
-            return options.AudioFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase);
+            var extension = Path.GetExtension(path.AsSpan());
+            return options.AudioFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase);
         }
     }
 }

Emby.Naming/AudioBook/AudioBookInfo.cs

@@ -15,13 +15,13 @@ namespace Emby.Naming.AudioBook
         /// <param name="files">List of files composing the actual audiobook.</param>
         /// <param name="extras">List of extra files.</param>
         /// <param name="alternateVersions">Alternative version of files.</param>
-        public AudioBookInfo(string name, int? year, List<AudioBookFileInfo>? files, List<AudioBookFileInfo>? extras, List<AudioBookFileInfo>? alternateVersions)
+        public AudioBookInfo(string name, int? year, IReadOnlyList<AudioBookFileInfo> files, IReadOnlyList<AudioBookFileInfo> extras, IReadOnlyList<AudioBookFileInfo> alternateVersions)
         {
             Name = name;
             Year = year;
-            Files = files ?? new List<AudioBookFileInfo>();
-            Extras = extras ?? new List<AudioBookFileInfo>();
-            AlternateVersions = alternateVersions ?? new List<AudioBookFileInfo>();
+            Files = files;
+            Extras = extras;
+            AlternateVersions = alternateVersions;
         }
 
         /// <summary>
@@ -39,18 +39,18 @@ namespace Emby.Naming.AudioBook
         /// Gets or sets the files.
         /// </summary>
         /// <value>The files.</value>
-        public List<AudioBookFileInfo> Files { get; set; }
+        public IReadOnlyList<AudioBookFileInfo> Files { get; set; }
 
         /// <summary>
         /// Gets or sets the extras.
         /// </summary>
         /// <value>The extras.</value>
-        public List<AudioBookFileInfo> Extras { get; set; }
+        public IReadOnlyList<AudioBookFileInfo> Extras { get; set; }
 
         /// <summary>
         /// Gets or sets the alternate versions.
         /// </summary>
         /// <value>The alternate versions.</value>
-        public List<AudioBookFileInfo> AlternateVersions { get; set; }
+        public IReadOnlyList<AudioBookFileInfo> AlternateVersions { get; set; }
     }
 }

Emby.Naming/AudioBook/AudioBookListResolver.cs

@@ -73,7 +73,7 @@ namespace Emby.Naming.AudioBook
 
             var haveChaptersOrPages = stackFiles.Any(x => x.ChapterNumber != null || x.PartNumber != null);
             var groupedBy = stackFiles.GroupBy(file => new { file.ChapterNumber, file.PartNumber });
-            var nameWithReplacedDots = nameParserResult.Name.Replace(" ", ".");
+            var nameWithReplacedDots = nameParserResult.Name.Replace(' ', '.');
 
             foreach (var group in groupedBy)
             {
@@ -87,7 +87,7 @@ namespace Emby.Naming.AudioBook
                         foreach (var audioFile in group)
                         {
                             var name = Path.GetFileNameWithoutExtension(audioFile.Path);
-                            if (name.Equals("audiobook") ||
+                            if (name.Equals("audiobook", StringComparison.OrdinalIgnoreCase) ||
                                 name.Contains(nameParserResult.Name, StringComparison.OrdinalIgnoreCase) ||
                                 name.Contains(nameWithReplacedDots, StringComparison.OrdinalIgnoreCase))
                             {

Emby.Naming/Common/NamingOptions.cs

@@ -137,7 +137,7 @@ namespace Emby.Naming.Common
 
             CleanStrings = new[]
             {
-                @"[ _\,\.\(\)\[\]\-](3d|sbs|tab|hsbs|htab|mvc|HDR|HDC|UHD|UltraHD|4k|ac3|dts|custom|dc|divx|divx5|dsr|dsrip|dutch|dvd|dvdrip|dvdscr|dvdscreener|screener|dvdivx|cam|fragment|fs|hdtv|hdrip|hdtvrip|internal|limited|multisubs|ntsc|ogg|ogm|pal|pdtv|proper|repack|rerip|retail|cd[1-9]|r3|r5|bd5|bd|se|svcd|swedish|german|read.nfo|nfofix|unrated|ws|telesync|ts|telecine|tc|brrip|bdrip|480p|480i|576p|576i|720p|720i|1080p|1080i|2160p|hrhd|hrhdtv|hddvd|bluray|blu-ray|x264|x265|h264|xvid|xvidvd|xxx|www.www|AAC|DTS|\[.*\])([ _\,\.\(\)\[\]\-]|$)",
+                @"[ _\,\.\(\)\[\]\-](3d|sbs|tab|hsbs|htab|mvc|HDR|HDC|UHD|UltraHD|4k|ac3|dts|custom|dc|divx|divx5|dsr|dsrip|dutch|dvd|dvdrip|dvdscr|dvdscreener|screener|dvdivx|cam|fragment|fs|hdtv|hdrip|hdtvrip|internal|limited|multisubs|ntsc|ogg|ogm|pal|pdtv|proper|repack|rerip|retail|cd[1-9]|r3|r5|bd5|bd|se|svcd|swedish|german|read.nfo|nfofix|unrated|ws|telesync|ts|telecine|tc|brrip|bdrip|480p|480i|576p|576i|720p|720i|1080p|1080i|2160p|hrhd|hrhdtv|hddvd|bluray|blu-ray|x264|x265|h264|h265|xvid|xvidvd|xxx|www.www|AAC|DTS|\[.*\])([ _\,\.\(\)\[\]\-]|$)",
                 @"(\[.*\])"
             };
 
@@ -277,12 +277,18 @@ namespace Emby.Naming.Common
                     IsNamed = true
                 },
 
-                new EpisodeExpression("[\\\\/\\._ \\[\\(-]([0-9]+)x([0-9]+(?:(?:[a-i]|\\.[1-9])(?![0-9]))?)([^\\\\/]*)$")
+                new EpisodeExpression(@"[\\\/\._ \[\(-]([0-9]+)x([0-9]+(?:(?:[a-i]|\.[1-9])(?![0-9]))?)([^\\\/]*)$")
                 {
                     SupportsAbsoluteEpisodeNumbers = true
                 },
 
-                // Case Closed (1996-2007)/Case Closed - 317.mkv
+                // Not a Kodi rule as well, but below rule also causes false positives for triple-digit episode names
+                // [bar] Foo - 1 [baz] special case of below expression to prevent false positives with digits in the series name
+                new EpisodeExpression(@".*[\\\/]?.*?(\[.*?\])+.*?(?<seriesname>[-\w\s]+?)[\s_]*-[\s_]*(?<epnumber>[0-9]+).*$")
+                {
+                    IsNamed = true
+                },
+
                 // /server/anything_102.mp4
                 // /server/james.corden.2017.04.20.anne.hathaway.720p.hdtv.x264-crooks.mkv
                 // /server/anything_1996.11.14.mp4
@@ -299,11 +305,12 @@ namespace Emby.Naming.Common
 
                 // *** End Kodi Standard Naming
 
-                // [bar] Foo - 1 [baz]
-                new EpisodeExpression(@".*?(\[.*?\])+.*?(?<seriesname>[\w\s]+?)[-\s_]+(?<epnumber>[0-9]+).*$")
+                // "Episode 16", "Episode 16 - Title"
+                new EpisodeExpression(@"[Ee]pisode (?<epnumber>[0-9]+)(-(?<endingepnumber>[0-9]+))?[^\\\/]*$")
                 {
                     IsNamed = true
                 },
+
                 new EpisodeExpression(@".*(\\|\/)[sS]?(?<seasonnumber>[0-9]+)[xX](?<epnumber>[0-9]+)[^\\\/]*$")
                 {
                     IsNamed = true
@@ -361,12 +368,6 @@ namespace Emby.Naming.Common
                     IsOptimistic = true,
                     IsNamed = true
                 },
-                // "Episode 16", "Episode 16 - Title"
-                new EpisodeExpression(@".*[\\\/][^\\\/]* (?<epnumber>[0-9]{1,3})(-(?<endingepnumber>[0-9]{2,3}))*[^\\\/]*$")
-                {
-                    IsOptimistic = true,
-                    IsNamed = true
-                }
             };
 
             EpisodeWithoutSeasonExpressions = new[]
@@ -587,7 +588,7 @@ namespace Emby.Naming.Common
             AudioBookNamesExpressions = new[]
             {
                 // Detect year usually in brackets after name Batman (2020)
-                @"^(?<name>.+?)\s*\(\s*(?<year>\d{4})\s*\)\s*$",
+                @"^(?<name>.+?)\s*\(\s*(?<year>[0-9]{4})\s*\)\s*$",
                 @"^\s*(?<name>[^ ].*?)\s*$"
             };
 

Emby.Naming/Emby.Naming.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <!-- ProjectGuid is only included as a requirement for SonarQube analysis -->
   <PropertyGroup>
@@ -9,12 +9,11 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <IncludeSymbols>true</IncludeSymbols>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-    <Nullable>enable</Nullable>
+    <AnalysisMode>AllDisabledByDefault</AnalysisMode>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(Stability)'=='Unstable'">
@@ -23,17 +22,18 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Compile Include="..\SharedVersion.cs" />
+    <Compile Include="../SharedVersion.cs" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\MediaBrowser.Model\MediaBrowser.Model.csproj" />
+    <ProjectReference Include="../MediaBrowser.Common/MediaBrowser.Common.csproj" />
+    <ProjectReference Include="../MediaBrowser.Model/MediaBrowser.Model.csproj" />
   </ItemGroup>
 
   <PropertyGroup>
     <Authors>Jellyfin Contributors</Authors>
     <PackageId>Jellyfin.Naming</PackageId>
-    <VersionPrefix>10.7.0</VersionPrefix>
+    <VersionPrefix>10.8.0</VersionPrefix>
     <RepositoryUrl>https://github.com/jellyfin/jellyfin</RepositoryUrl>
     <PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
   </PropertyGroup>
@@ -44,14 +44,9 @@
 
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <!-- TODO: <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" /> -->
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-
 </Project>

Emby.Naming/TV/EpisodeResolver.cs

@@ -16,7 +16,7 @@ namespace Emby.Naming.TV
         /// <summary>
         /// Initializes a new instance of the <see cref="EpisodeResolver"/> class.
         /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFileExtensions and passed to <see cref="StubResolver"/>, <see cref="FlagParser"/>, <see cref="Format3DParser"/> and <see cref="EpisodePathParser"/>.</param>
+        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFileExtensions and passed to <see cref="StubResolver"/>, <see cref="Format3DParser"/> and <see cref="EpisodePathParser"/>.</param>
         public EpisodeResolver(NamingOptions options)
         {
             _options = options;
@@ -62,12 +62,16 @@ namespace Emby.Naming.TV
                 container = extension.TrimStart('.');
             }
 
-            var flags = new FlagParser(_options).GetFlags(path);
-            var format3DResult = new Format3DParser(_options).Parse(flags);
+            var format3DResult = Format3DParser.Parse(path, _options);
 
             var parsingResult = new EpisodePathParser(_options)
                 .Parse(path, isDirectory, isNamed, isOptimistic, supportsAbsoluteNumbers, fillExtendedInfo);
 
+            if (!parsingResult.Success && !isStub)
+            {
+                return null;
+            }
+
             return new EpisodeInfo(path)
             {
                 Container = container,

Emby.Naming/TV/SeasonPathParser.cs

@@ -60,7 +60,7 @@ namespace Emby.Naming.TV
             bool supportSpecialAliases,
             bool supportNumericSeasonFolders)
         {
-            var filename = Path.GetFileName(path) ?? string.Empty;
+            string filename = Path.GetFileName(path);
 
             if (supportSpecialAliases)
             {

Emby.Naming/Video/CleanStringParser.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Text.RegularExpressions;
 
 namespace Emby.Naming.Video
@@ -16,8 +17,14 @@ namespace Emby.Naming.Video
         /// <param name="expressions">List of regex to parse name and year from.</param>
         /// <param name="newName">Parsing result string.</param>
         /// <returns>True if parsing was successful.</returns>
-        public static bool TryClean(string name, IReadOnlyList<Regex> expressions, out ReadOnlySpan<char> newName)
+        public static bool TryClean([NotNullWhen(true)] string? name, IReadOnlyList<Regex> expressions, out ReadOnlySpan<char> newName)
         {
+            if (string.IsNullOrEmpty(name))
+            {
+                newName = ReadOnlySpan<char>.Empty;
+                return false;
+            }
+
             var len = expressions.Count;
             for (int i = 0; i < len; i++)
             {
@@ -41,7 +48,7 @@ namespace Emby.Naming.Video
                 return true;
             }
 
-            newName = string.Empty;
+            newName = ReadOnlySpan<char>.Empty;
             return false;
         }
     }

Emby.Naming/Video/ExtraResolver.cs

@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Linq;
 using System.Text.RegularExpressions;
 using Emby.Naming.Audio;
 using Emby.Naming.Common;
@@ -29,72 +28,75 @@ namespace Emby.Naming.Video
         /// <param name="path">Path to file.</param>
         /// <returns>Returns <see cref="ExtraResult"/> object.</returns>
         public ExtraResult GetExtraInfo(string path)
-        {
-            return _options.VideoExtraRules
-                .Select(i => GetExtraInfo(path, i))
-                .FirstOrDefault(i => i.ExtraType != null) ?? new ExtraResult();
-        }
-
-        private ExtraResult GetExtraInfo(string path, ExtraRule rule)
         {
             var result = new ExtraResult();
 
-            if (rule.MediaType == MediaType.Audio)
+            for (var i = 0; i < _options.VideoExtraRules.Length; i++)
             {
-                if (!AudioFileParser.IsAudioFile(path, _options))
+                var rule = _options.VideoExtraRules[i];
+                if (rule.MediaType == MediaType.Audio)
+                {
+                    if (!AudioFileParser.IsAudioFile(path, _options))
+                    {
+                        continue;
+                    }
+                }
+                else if (rule.MediaType == MediaType.Video)
+                {
+                    if (!VideoResolver.IsVideoFile(path, _options))
+                    {
+                        continue;
+                    }
+                }
+
+                var pathSpan = path.AsSpan();
+                if (rule.RuleType == ExtraRuleType.Filename)
+                {
+                    var filename = Path.GetFileNameWithoutExtension(pathSpan);
+
+                    if (filename.Equals(rule.Token, StringComparison.OrdinalIgnoreCase))
+                    {
+                        result.ExtraType = rule.ExtraType;
+                        result.Rule = rule;
+                    }
+                }
+                else if (rule.RuleType == ExtraRuleType.Suffix)
+                {
+                    var filename = Path.GetFileNameWithoutExtension(pathSpan);
+
+                    if (filename.Contains(rule.Token, StringComparison.OrdinalIgnoreCase))
+                    {
+                        result.ExtraType = rule.ExtraType;
+                        result.Rule = rule;
+                    }
+                }
+                else if (rule.RuleType == ExtraRuleType.Regex)
+                {
+                    var filename = Path.GetFileName(path);
+
+                    var regex = new Regex(rule.Token, RegexOptions.IgnoreCase);
+
+                    if (regex.IsMatch(filename))
+                    {
+                        result.ExtraType = rule.ExtraType;
+                        result.Rule = rule;
+                    }
+                }
+                else if (rule.RuleType == ExtraRuleType.DirectoryName)
+                {
+                    var directoryName = Path.GetFileName(Path.GetDirectoryName(pathSpan));
+                    if (directoryName.Equals(rule.Token, StringComparison.OrdinalIgnoreCase))
+                    {
+                        result.ExtraType = rule.ExtraType;
+                        result.Rule = rule;
+                    }
+                }
+
+                if (result.ExtraType != null)
                 {
                     return result;
                 }
             }
-            else if (rule.MediaType == MediaType.Video)
-            {
-                if (!new VideoResolver(_options).IsVideoFile(path))
-                {
-                    return result;
-                }
-            }
-
-            if (rule.RuleType == ExtraRuleType.Filename)
-            {
-                var filename = Path.GetFileNameWithoutExtension(path);
-
-                if (string.Equals(filename, rule.Token, StringComparison.OrdinalIgnoreCase))
-                {
-                    result.ExtraType = rule.ExtraType;
-                    result.Rule = rule;
-                }
-            }
-            else if (rule.RuleType == ExtraRuleType.Suffix)
-            {
-                var filename = Path.GetFileNameWithoutExtension(path);
-
-                if (filename.IndexOf(rule.Token, StringComparison.OrdinalIgnoreCase) > 0)
-                {
-                    result.ExtraType = rule.ExtraType;
-                    result.Rule = rule;
-                }
-            }
-            else if (rule.RuleType == ExtraRuleType.Regex)
-            {
-                var filename = Path.GetFileName(path);
-
-                var regex = new Regex(rule.Token, RegexOptions.IgnoreCase);
-
-                if (regex.IsMatch(filename))
-                {
-                    result.ExtraType = rule.ExtraType;
-                    result.Rule = rule;
-                }
-            }
-            else if (rule.RuleType == ExtraRuleType.DirectoryName)
-            {
-                var directoryName = Path.GetFileName(Path.GetDirectoryName(path));
-                if (string.Equals(directoryName, rule.Token, StringComparison.OrdinalIgnoreCase))
-                {
-                    result.ExtraType = rule.ExtraType;
-                    result.Rule = rule;
-                }
-            }
 
             return result;
         }

Emby.Naming/Video/FlagParser.cs

@@ -1,53 +0,0 @@
-using System;
-using System.IO;
-using Emby.Naming.Common;
-
-namespace Emby.Naming.Video
-{
-    /// <summary>
-    /// Parses list of flags from filename based on delimiters.
-    /// </summary>
-    public class FlagParser
-    {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="FlagParser"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFlagDelimiters.</param>
-        public FlagParser(NamingOptions options)
-        {
-            _options = options;
-        }
-
-        /// <summary>
-        /// Calls GetFlags function with _options.VideoFlagDelimiters parameter.
-        /// </summary>
-        /// <param name="path">Path to file.</param>
-        /// <returns>List of found flags.</returns>
-        public string[] GetFlags(string path)
-        {
-            return GetFlags(path, _options.VideoFlagDelimiters);
-        }
-
-        /// <summary>
-        /// Parses flags from filename based on delimiters.
-        /// </summary>
-        /// <param name="path">Path to file.</param>
-        /// <param name="delimiters">Delimiters used to extract flags.</param>
-        /// <returns>List of found flags.</returns>
-        public string[] GetFlags(string path, char[] delimiters)
-        {
-            if (string.IsNullOrEmpty(path))
-            {
-                return Array.Empty<string>();
-            }
-
-            // Note: the tags need be be surrounded be either a space ( ), hyphen -, dot . or underscore _.
-
-            var file = Path.GetFileName(path);
-
-            return file.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
-        }
-    }
-}

Emby.Naming/Video/Format3DParser.cs

@@ -1,45 +1,37 @@
 using System;
-using System.Linq;
 using Emby.Naming.Common;
 
 namespace Emby.Naming.Video
 {
     /// <summary>
-    /// Parste 3D format related flags.
+    /// Parse 3D format related flags.
     /// </summary>
-    public class Format3DParser
+    public static class Format3DParser
     {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="Format3DParser"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFlagDelimiters and passes options to <see cref="FlagParser"/>.</param>
-        public Format3DParser(NamingOptions options)
-        {
-            _options = options;
-        }
+        // Static default result to save on allocation costs.
+        private static readonly Format3DResult _defaultResult = new (false, null);
 
         /// <summary>
         /// Parse 3D format related flags.
         /// </summary>
         /// <param name="path">Path to file.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Returns <see cref="Format3DResult"/> object.</returns>
-        public Format3DResult Parse(string path)
+        public static Format3DResult Parse(ReadOnlySpan<char> path, NamingOptions namingOptions)
         {
-            int oldLen = _options.VideoFlagDelimiters.Length;
-            var delimiters = new char[oldLen + 1];
-            _options.VideoFlagDelimiters.CopyTo(delimiters, 0);
+            int oldLen = namingOptions.VideoFlagDelimiters.Length;
+            Span<char> delimiters = stackalloc char[oldLen + 1];
+            namingOptions.VideoFlagDelimiters.AsSpan().CopyTo(delimiters);
             delimiters[oldLen] = ' ';
 
-            return Parse(new FlagParser(_options).GetFlags(path, delimiters));
+            return Parse(path, delimiters, namingOptions);
         }
 
-        internal Format3DResult Parse(string[] videoFlags)
+        private static Format3DResult Parse(ReadOnlySpan<char> path, ReadOnlySpan<char> delimiters, NamingOptions namingOptions)
         {
-            foreach (var rule in _options.Format3DRules)
+            foreach (var rule in namingOptions.Format3DRules)
             {
-                var result = Parse(videoFlags, rule);
+                var result = Parse(path, rule, delimiters);
 
                 if (result.Is3D)
                 {
@@ -47,51 +39,43 @@ namespace Emby.Naming.Video
                 }
             }
 
-            return new Format3DResult();
+            return _defaultResult;
         }
 
-        private static Format3DResult Parse(string[] videoFlags, Format3DRule rule)
+        private static Format3DResult Parse(ReadOnlySpan<char> path, Format3DRule rule, ReadOnlySpan<char> delimiters)
         {
-            var result = new Format3DResult();
+            bool is3D = false;
+            string? format3D = null;
 
-            if (string.IsNullOrEmpty(rule.PrecedingToken))
+            // If there's no preceding token we just consider it found
+            var foundPrefix = string.IsNullOrEmpty(rule.PrecedingToken);
+            while (path.Length > 0)
             {
-                result.Format3D = new[] { rule.Token }.FirstOrDefault(i => videoFlags.Contains(i, StringComparer.OrdinalIgnoreCase));
-                result.Is3D = !string.IsNullOrEmpty(result.Format3D);
-
-                if (result.Is3D)
+                var index = path.IndexOfAny(delimiters);
+                if (index == -1)
                 {
-                    result.Tokens.Add(rule.Token);
-                }
-            }
-            else
-            {
-                var foundPrefix = false;
-                string? format = null;
-
-                foreach (var flag in videoFlags)
-                {
-                    if (foundPrefix)
-                    {
-                        result.Tokens.Add(rule.PrecedingToken);
-
-                        if (string.Equals(rule.Token, flag, StringComparison.OrdinalIgnoreCase))
-                        {
-                            format = flag;
-                            result.Tokens.Add(rule.Token);
-                        }
-
-                        break;
-                    }
-
-                    foundPrefix = string.Equals(flag, rule.PrecedingToken, StringComparison.OrdinalIgnoreCase);
+                    index = path.Length - 1;
                 }
 
-                result.Is3D = foundPrefix && !string.IsNullOrEmpty(format);
-                result.Format3D = format;
+                var currentSlice = path[..index];
+                path = path[(index + 1)..];
+
+                if (!foundPrefix)
+                {
+                    foundPrefix = currentSlice.Equals(rule.PrecedingToken, StringComparison.OrdinalIgnoreCase);
+                    continue;
+                }
+
+                is3D = foundPrefix && currentSlice.Equals(rule.Token, StringComparison.OrdinalIgnoreCase);
+
+                if (is3D)
+                {
+                    format3D = rule.Token;
+                    break;
+                }
             }
 
-            return result;
+            return is3D ? new Format3DResult(true, format3D) : _defaultResult;
         }
     }
 }

Emby.Naming/Video/Format3DResult.cs

@@ -1,5 +1,3 @@
-using System.Collections.Generic;
-
 namespace Emby.Naming.Video
 {
     /// <summary>
@@ -10,27 +8,24 @@ namespace Emby.Naming.Video
         /// <summary>
         /// Initializes a new instance of the <see cref="Format3DResult"/> class.
         /// </summary>
-        public Format3DResult()
+        /// <param name="is3D">A value indicating whether the parsed string contains 3D tokens.</param>
+        /// <param name="format3D">The 3D format. Value might be null if [is3D] is <c>false</c>.</param>
+        public Format3DResult(bool is3D, string? format3D)
         {
-            Tokens = new List<string>();
+            Is3D = is3D;
+            Format3D = format3D;
         }
 
         /// <summary>
-        /// Gets or sets a value indicating whether [is3 d].
+        /// Gets a value indicating whether [is3 d].
         /// </summary>
         /// <value><c>true</c> if [is3 d]; otherwise, <c>false</c>.</value>
-        public bool Is3D { get; set; }
+        public bool Is3D { get; }
 
         /// <summary>
-        /// Gets or sets the format3 d.
+        /// Gets the format3 d.
         /// </summary>
         /// <value>The format3 d.</value>
-        public string? Format3D { get; set; }
-
-        /// <summary>
-        /// Gets or sets the tokens.
-        /// </summary>
-        /// <value>The tokens.</value>
-        public List<string> Tokens { get; set; }
+        public string? Format3D { get; }
     }
 }

Emby.Naming/Video/StackResolver.cs

@@ -85,10 +85,8 @@ namespace Emby.Naming.Video
         /// <returns>Enumerable <see cref="FileStack"/> of videos.</returns>
         public IEnumerable<FileStack> Resolve(IEnumerable<FileSystemMetadata> files)
         {
-            var resolver = new VideoResolver(_options);
-
             var list = files
-                .Where(i => i.IsDirectory || resolver.IsVideoFile(i.FullName) || resolver.IsStubFile(i.FullName))
+                .Where(i => i.IsDirectory || VideoResolver.IsVideoFile(i.FullName, _options) || VideoResolver.IsStubFile(i.FullName, _options))
                 .OrderBy(i => i.FullName)
                 .ToList();
 

Emby.Naming/Video/VideoFileInfo.cs

@@ -1,3 +1,4 @@
+using System;
 using MediaBrowser.Model.Entities;
 
 namespace Emby.Naming.Video
@@ -106,9 +107,9 @@ namespace Emby.Naming.Video
         /// Gets the file name without extension.
         /// </summary>
         /// <value>The file name without extension.</value>
-        public string FileNameWithoutExtension => !IsDirectory
-            ? System.IO.Path.GetFileNameWithoutExtension(Path)
-            : System.IO.Path.GetFileName(Path);
+        public ReadOnlySpan<char> FileNameWithoutExtension => !IsDirectory
+            ? System.IO.Path.GetFileNameWithoutExtension(Path.AsSpan())
+            : System.IO.Path.GetFileName(Path.AsSpan());
 
         /// <inheritdoc />
         public override string ToString()

Emby.Naming/Video/VideoListResolver.cs

@@ -12,31 +12,19 @@ namespace Emby.Naming.Video
     /// <summary>
     /// Resolves alternative versions and extras from list of video files.
     /// </summary>
-    public class VideoListResolver
+    public static class VideoListResolver
     {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="VideoListResolver"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing CleanStringRegexes and VideoFlagDelimiters and passes options to <see cref="StackResolver"/> and <see cref="VideoResolver"/>.</param>
-        public VideoListResolver(NamingOptions options)
-        {
-            _options = options;
-        }
-
         /// <summary>
         /// Resolves alternative versions and extras from list of video files.
         /// </summary>
         /// <param name="files">List of related video files.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <param name="supportMultiVersion">Indication we should consider multi-versions of content.</param>
         /// <returns>Returns enumerable of <see cref="VideoInfo"/> which groups files together when related.</returns>
-        public IEnumerable<VideoInfo> Resolve(List<FileSystemMetadata> files, bool supportMultiVersion = true)
+        public static IEnumerable<VideoInfo> Resolve(IEnumerable<FileSystemMetadata> files, NamingOptions namingOptions, bool supportMultiVersion = true)
         {
-            var videoResolver = new VideoResolver(_options);
-
             var videoInfos = files
-                .Select(i => videoResolver.Resolve(i.FullName, i.IsDirectory))
+                .Select(i => VideoResolver.Resolve(i.FullName, i.IsDirectory, namingOptions))
                 .OfType<VideoFileInfo>()
                 .ToList();
 
@@ -46,7 +34,7 @@ namespace Emby.Naming.Video
                 .Where(i => i.ExtraType == null)
                 .Select(i => new FileSystemMetadata { FullName = i.Path, IsDirectory = i.IsDirectory });
 
-            var stackResult = new StackResolver(_options)
+            var stackResult = new StackResolver(namingOptions)
                 .Resolve(nonExtras).ToList();
 
             var remainingFiles = videoInfos
@@ -59,23 +47,17 @@ namespace Emby.Naming.Video
             {
                 var info = new VideoInfo(stack.Name)
                 {
-                    Files = stack.Files.Select(i => videoResolver.Resolve(i, stack.IsDirectoryStack))
+                    Files = stack.Files.Select(i => VideoResolver.Resolve(i, stack.IsDirectoryStack, namingOptions))
                         .OfType<VideoFileInfo>()
                         .ToList()
                 };
 
                 info.Year = info.Files[0].Year;
 
-                var extraBaseNames = new List<string> { stack.Name, Path.GetFileNameWithoutExtension(stack.Files[0]) };
-
-                var extras = GetExtras(remainingFiles, extraBaseNames);
+                var extras = ExtractExtras(remainingFiles, stack.Name, Path.GetFileNameWithoutExtension(stack.Files[0].AsSpan()), namingOptions.VideoFlagDelimiters);
 
                 if (extras.Count > 0)
                 {
-                    remainingFiles = remainingFiles
-                        .Except(extras)
-                        .ToList();
-
                     info.Extras = extras;
                 }
 
@@ -88,15 +70,12 @@ namespace Emby.Naming.Video
 
             foreach (var media in standaloneMedia)
             {
-                var info = new VideoInfo(media.Name) { Files = new List<VideoFileInfo> { media } };
+                var info = new VideoInfo(media.Name) { Files = new[] { media } };
 
                 info.Year = info.Files[0].Year;
 
-                var extras = GetExtras(remainingFiles, new List<string> { media.FileNameWithoutExtension });
-
-                remainingFiles = remainingFiles
-                    .Except(extras.Concat(new[] { media }))
-                    .ToList();
+                remainingFiles.Remove(media);
+                var extras = ExtractExtras(remainingFiles, media.FileNameWithoutExtension, namingOptions.VideoFlagDelimiters);
 
                 info.Extras = extras;
 
@@ -105,8 +84,7 @@ namespace Emby.Naming.Video
 
             if (supportMultiVersion)
             {
-                list = GetVideosGroupedByVersion(list)
-                    .ToList();
+                list = GetVideosGroupedByVersion(list, namingOptions);
             }
 
             // If there's only one resolved video, use the folder name as well to find extras
@@ -114,19 +92,14 @@ namespace Emby.Naming.Video
             {
                 var info = list[0];
                 var videoPath = list[0].Files[0].Path;
-                var parentPath = Path.GetDirectoryName(videoPath);
+                var parentPath = Path.GetDirectoryName(videoPath.AsSpan());
 
-                if (!string.IsNullOrEmpty(parentPath))
+                if (!parentPath.IsEmpty)
                 {
                     var folderName = Path.GetFileName(parentPath);
-                    if (!string.IsNullOrEmpty(folderName))
+                    if (!folderName.IsEmpty)
                     {
-                        var extras = GetExtras(remainingFiles, new List<string> { folderName });
-
-                        remainingFiles = remainingFiles
-                            .Except(extras)
-                            .ToList();
-
+                        var extras = ExtractExtras(remainingFiles, folderName, namingOptions.VideoFlagDelimiters);
                         extras.AddRange(info.Extras);
                         info.Extras = extras;
                     }
@@ -164,96 +137,168 @@ namespace Emby.Naming.Video
             // Whatever files are left, just add them
             list.AddRange(remainingFiles.Select(i => new VideoInfo(i.Name)
             {
-                Files = new List<VideoFileInfo> { i },
+                Files = new[] { i },
                 Year = i.Year
             }));
 
             return list;
         }
 
-        private IEnumerable<VideoInfo> GetVideosGroupedByVersion(List<VideoInfo> videos)
+        private static List<VideoInfo> GetVideosGroupedByVersion(List<VideoInfo> videos, NamingOptions namingOptions)
         {
             if (videos.Count == 0)
             {
                 return videos;
             }
 
-            var list = new List<VideoInfo>();
+            var folderName = Path.GetFileName(Path.GetDirectoryName(videos[0].Files[0].Path.AsSpan()));
 
-            var folderName = Path.GetFileName(Path.GetDirectoryName(videos[0].Files[0].Path));
-
-            if (!string.IsNullOrEmpty(folderName)
-                && folderName.Length > 1
-                && videos.All(i => i.Files.Count == 1
-                && IsEligibleForMultiVersion(folderName, i.Files[0].Path))
-                && HaveSameYear(videos))
+            if (folderName.Length <= 1 || !HaveSameYear(videos))
             {
-                var ordered = videos.OrderBy(i => i.Name).ToList();
-
-                list.Add(ordered[0]);
-
-                var alternateVersionsLen = ordered.Count - 1;
-                var alternateVersions = new VideoFileInfo[alternateVersionsLen];
-                for (int i = 0; i < alternateVersionsLen; i++)
-                {
-                    alternateVersions[i] = ordered[i + 1].Files[0];
-                }
-
-                list[0].AlternateVersions = alternateVersions;
-                list[0].Name = folderName;
-                var extras = ordered.Skip(1).SelectMany(i => i.Extras).ToList();
-                extras.AddRange(list[0].Extras);
-                list[0].Extras = extras;
-
-                return list;
+                return videos;
             }
 
-            return videos;
-        }
-
-        private bool HaveSameYear(List<VideoInfo> videos)
-        {
-            return videos.Select(i => i.Year ?? -1).Distinct().Count() < 2;
-        }
-
-        private bool IsEligibleForMultiVersion(string folderName, string? testFilename)
-        {
-            testFilename = Path.GetFileNameWithoutExtension(testFilename) ?? string.Empty;
-
-            if (testFilename.StartsWith(folderName, StringComparison.OrdinalIgnoreCase))
+            // Cannot use Span inside local functions and delegates thus we cannot use LINQ here nor merge with the above [if]
+            for (var i = 0; i < videos.Count; i++)
             {
-                if (CleanStringParser.TryClean(testFilename, _options.CleanStringRegexes, out var cleanName))
+                var video = videos[i];
+                if (!IsEligibleForMultiVersion(folderName, video.Files[0].Path, namingOptions))
                 {
-                    testFilename = cleanName.ToString();
+                    return videos;
                 }
-
-                if (folderName.Length <= testFilename.Length)
-                {
-                    testFilename = testFilename.Substring(folderName.Length).Trim();
-                }
-
-                return string.IsNullOrEmpty(testFilename)
-                   || testFilename[0].Equals('-')
-                   || testFilename[0].Equals('_')
-                   || string.IsNullOrWhiteSpace(Regex.Replace(testFilename, @"\[([^]]*)\]", string.Empty));
             }
 
-            return false;
-        }
+            // The list is created and overwritten in the caller, so we are allowed to do in-place sorting
+            videos.Sort((x, y) => string.Compare(x.Name, y.Name, StringComparison.Ordinal));
 
-        private List<VideoFileInfo> GetExtras(IEnumerable<VideoFileInfo> remainingFiles, List<string> baseNames)
-        {
-            foreach (var name in baseNames.ToList())
+            var list = new List<VideoInfo>
             {
-                var trimmedName = name.TrimEnd().TrimEnd(_options.VideoFlagDelimiters).TrimEnd();
-                baseNames.Add(trimmedName);
+                videos[0]
+            };
+
+            var alternateVersionsLen = videos.Count - 1;
+            var alternateVersions = new VideoFileInfo[alternateVersionsLen];
+            var extras = new List<VideoFileInfo>(list[0].Extras);
+            for (int i = 0; i < alternateVersionsLen; i++)
+            {
+                var video = videos[i + 1];
+                alternateVersions[i] = video.Files[0];
+                extras.AddRange(video.Extras);
             }
 
-            return remainingFiles
-                .Where(i => i.ExtraType != null)
-                .Where(i => baseNames.Any(b =>
-                    i.FileNameWithoutExtension.StartsWith(b, StringComparison.OrdinalIgnoreCase)))
-                .ToList();
+            list[0].AlternateVersions = alternateVersions;
+            list[0].Name = folderName.ToString();
+            list[0].Extras = extras;
+
+            return list;
+        }
+
+        private static bool HaveSameYear(IReadOnlyList<VideoInfo> videos)
+        {
+            if (videos.Count == 1)
+            {
+                return true;
+            }
+
+            var firstYear = videos[0].Year ?? -1;
+            for (var i = 1; i < videos.Count; i++)
+            {
+                if ((videos[i].Year ?? -1) != firstYear)
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        private static bool IsEligibleForMultiVersion(ReadOnlySpan<char> folderName, string testFilePath, NamingOptions namingOptions)
+        {
+            var testFilename = Path.GetFileNameWithoutExtension(testFilePath.AsSpan());
+            if (!testFilename.StartsWith(folderName, StringComparison.OrdinalIgnoreCase))
+            {
+                return false;
+            }
+
+            // Remove the folder name before cleaning as we don't care about cleaning that part
+            if (folderName.Length <= testFilename.Length)
+            {
+                testFilename = testFilename[folderName.Length..].Trim();
+            }
+
+            // There are no span overloads for regex unfortunately
+            var tmpTestFilename = testFilename.ToString();
+            if (CleanStringParser.TryClean(tmpTestFilename, namingOptions.CleanStringRegexes, out var cleanName))
+            {
+                tmpTestFilename = cleanName.Trim().ToString();
+            }
+
+            // The CleanStringParser should have removed common keywords etc.
+            return string.IsNullOrEmpty(tmpTestFilename)
+                   || testFilename[0] == '-'
+                   || Regex.IsMatch(tmpTestFilename, @"^\[([^]]*)\]", RegexOptions.Compiled);
+        }
+
+        private static ReadOnlySpan<char> TrimFilenameDelimiters(ReadOnlySpan<char> name, ReadOnlySpan<char> videoFlagDelimiters)
+        {
+            return name.IsEmpty ? name : name.TrimEnd().TrimEnd(videoFlagDelimiters).TrimEnd();
+        }
+
+        private static bool StartsWith(ReadOnlySpan<char> fileName, ReadOnlySpan<char> baseName, ReadOnlySpan<char> trimmedBaseName)
+        {
+            if (baseName.IsEmpty)
+            {
+                return false;
+            }
+
+            return fileName.StartsWith(baseName, StringComparison.OrdinalIgnoreCase)
+                   || (!trimmedBaseName.IsEmpty && fileName.StartsWith(trimmedBaseName, StringComparison.OrdinalIgnoreCase));
+        }
+
+        /// <summary>
+        /// Finds similar filenames to that of [baseName] and removes any matches from [remainingFiles].
+        /// </summary>
+        /// <param name="remainingFiles">The list of remaining filenames.</param>
+        /// <param name="baseName">The base name to use for the comparison.</param>
+        /// <param name="videoFlagDelimiters">The video flag delimiters.</param>
+        /// <returns>A list of video extras for [baseName].</returns>
+        private static List<VideoFileInfo> ExtractExtras(IList<VideoFileInfo> remainingFiles, ReadOnlySpan<char> baseName, ReadOnlySpan<char> videoFlagDelimiters)
+        {
+            return ExtractExtras(remainingFiles, baseName, ReadOnlySpan<char>.Empty, videoFlagDelimiters);
+        }
+
+        /// <summary>
+        /// Finds similar filenames to that of [firstBaseName] and [secondBaseName] and removes any matches from [remainingFiles].
+        /// </summary>
+        /// <param name="remainingFiles">The list of remaining filenames.</param>
+        /// <param name="firstBaseName">The first base name to use for the comparison.</param>
+        /// <param name="secondBaseName">The second base name to use for the comparison.</param>
+        /// <param name="videoFlagDelimiters">The video flag delimiters.</param>
+        /// <returns>A list of video extras for [firstBaseName] and [secondBaseName].</returns>
+        private static List<VideoFileInfo> ExtractExtras(IList<VideoFileInfo> remainingFiles, ReadOnlySpan<char> firstBaseName, ReadOnlySpan<char> secondBaseName, ReadOnlySpan<char> videoFlagDelimiters)
+        {
+            var trimmedFirstBaseName = TrimFilenameDelimiters(firstBaseName, videoFlagDelimiters);
+            var trimmedSecondBaseName = TrimFilenameDelimiters(secondBaseName, videoFlagDelimiters);
+
+            var result = new List<VideoFileInfo>();
+            for (var pos = remainingFiles.Count - 1; pos >= 0; pos--)
+            {
+                var file = remainingFiles[pos];
+                if (file.ExtraType == null)
+                {
+                    continue;
+                }
+
+                var filename = file.FileNameWithoutExtension;
+                if (StartsWith(filename, firstBaseName, trimmedFirstBaseName)
+                    || StartsWith(filename, secondBaseName, trimmedSecondBaseName))
+                {
+                    result.Add(file);
+                    remainingFiles.RemoveAt(pos);
+                }
+            }
+
+            return result;
         }
     }
 }

Emby.Naming/Video/VideoResolver.cs

@@ -1,45 +1,36 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
-using System.Linq;
 using Emby.Naming.Common;
+using Jellyfin.Extensions;
 
 namespace Emby.Naming.Video
 {
     /// <summary>
     /// Resolves <see cref="VideoFileInfo"/> from file path.
     /// </summary>
-    public class VideoResolver
+    public static class VideoResolver
     {
-        private readonly NamingOptions _options;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="VideoResolver"/> class.
-        /// </summary>
-        /// <param name="options"><see cref="NamingOptions"/> object containing VideoFileExtensions, StubFileExtensions, CleanStringRegexes and CleanDateTimeRegexes
-        /// and passes options in <see cref="StubResolver"/>, <see cref="FlagParser"/>, <see cref="Format3DParser"/> and <see cref="ExtraResolver"/>.</param>
-        public VideoResolver(NamingOptions options)
-        {
-            _options = options;
-        }
-
         /// <summary>
         /// Resolves the directory.
         /// </summary>
         /// <param name="path">The path.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>VideoFileInfo.</returns>
-        public VideoFileInfo? ResolveDirectory(string? path)
+        public static VideoFileInfo? ResolveDirectory(string? path, NamingOptions namingOptions)
         {
-            return Resolve(path, true);
+            return Resolve(path, true, namingOptions);
         }
 
         /// <summary>
         /// Resolves the file.
         /// </summary>
         /// <param name="path">The path.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>VideoFileInfo.</returns>
-        public VideoFileInfo? ResolveFile(string? path)
+        public static VideoFileInfo? ResolveFile(string? path, NamingOptions namingOptions)
         {
-            return Resolve(path, false);
+            return Resolve(path, false, namingOptions);
         }
 
         /// <summary>
@@ -47,10 +38,11 @@ namespace Emby.Naming.Video
         /// </summary>
         /// <param name="path">The path.</param>
         /// <param name="isDirectory">if set to <c>true</c> [is folder].</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <param name="parseName">Whether or not the name should be parsed for info.</param>
         /// <returns>VideoFileInfo.</returns>
         /// <exception cref="ArgumentNullException"><c>path</c> is <c>null</c>.</exception>
-        public VideoFileInfo? Resolve(string? path, bool isDirectory, bool parseName = true)
+        public static VideoFileInfo? Resolve(string? path, bool isDirectory, NamingOptions namingOptions, bool parseName = true)
         {
             if (string.IsNullOrEmpty(path))
             {
@@ -58,18 +50,18 @@ namespace Emby.Naming.Video
             }
 
             bool isStub = false;
-            string? container = null;
+            ReadOnlySpan<char> container = ReadOnlySpan<char>.Empty;
             string? stubType = null;
 
             if (!isDirectory)
             {
-                var extension = Path.GetExtension(path);
+                var extension = Path.GetExtension(path.AsSpan());
 
                 // Check supported extensions
-                if (!_options.VideoFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+                if (!namingOptions.VideoFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase))
                 {
                     // It's not supported. Check stub extensions
-                    if (!StubResolver.TryResolveFile(path, _options, out stubType))
+                    if (!StubResolver.TryResolveFile(path, namingOptions, out stubType))
                     {
                         return null;
                     }
@@ -80,25 +72,22 @@ namespace Emby.Naming.Video
                 container = extension.TrimStart('.');
             }
 
-            var flags = new FlagParser(_options).GetFlags(path);
-            var format3DResult = new Format3DParser(_options).Parse(flags);
+            var format3DResult = Format3DParser.Parse(path, namingOptions);
 
-            var extraResult = new ExtraResolver(_options).GetExtraInfo(path);
+            var extraResult = new ExtraResolver(namingOptions).GetExtraInfo(path);
 
-            var name = isDirectory
-                ? Path.GetFileName(path)
-                : Path.GetFileNameWithoutExtension(path);
+            var name = Path.GetFileNameWithoutExtension(path);
 
             int? year = null;
 
             if (parseName)
             {
-                var cleanDateTimeResult = CleanDateTime(name);
+                var cleanDateTimeResult = CleanDateTime(name, namingOptions);
                 name = cleanDateTimeResult.Name;
                 year = cleanDateTimeResult.Year;
 
                 if (extraResult.ExtraType == null
-                    && TryCleanString(name, out ReadOnlySpan<char> newName))
+                    && TryCleanString(name, namingOptions, out ReadOnlySpan<char> newName))
                 {
                     name = newName.ToString();
                 }
@@ -106,7 +95,7 @@ namespace Emby.Naming.Video
 
             return new VideoFileInfo(
                 path: path,
-                container: container,
+                container: container.IsEmpty ? null : container.ToString(),
                 isStub: isStub,
                 name: name,
                 year: year,
@@ -122,43 +111,47 @@ namespace Emby.Naming.Video
         /// Determines if path is video file based on extension.
         /// </summary>
         /// <param name="path">Path to file.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>True if is video file.</returns>
-        public bool IsVideoFile(string path)
+        public static bool IsVideoFile(string path, NamingOptions namingOptions)
         {
-            var extension = Path.GetExtension(path) ?? string.Empty;
-            return _options.VideoFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase);
+            var extension = Path.GetExtension(path.AsSpan());
+            return namingOptions.VideoFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
         /// Determines if path is video file stub based on extension.
         /// </summary>
         /// <param name="path">Path to file.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>True if is video file stub.</returns>
-        public bool IsStubFile(string path)
+        public static bool IsStubFile(string path, NamingOptions namingOptions)
         {
-            var extension = Path.GetExtension(path) ?? string.Empty;
-            return _options.StubFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase);
+            var extension = Path.GetExtension(path.AsSpan());
+            return namingOptions.StubFileExtensions.Contains(extension, StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
         /// Tries to clean name of clutter.
         /// </summary>
         /// <param name="name">Raw name.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <param name="newName">Clean name.</param>
         /// <returns>True if cleaning of name was successful.</returns>
-        public bool TryCleanString(string name, out ReadOnlySpan<char> newName)
+        public static bool TryCleanString([NotNullWhen(true)] string? name, NamingOptions namingOptions, out ReadOnlySpan<char> newName)
         {
-            return CleanStringParser.TryClean(name, _options.CleanStringRegexes, out newName);
+            return CleanStringParser.TryClean(name, namingOptions.CleanStringRegexes, out newName);
         }
 
         /// <summary>
         /// Tries to get name and year from raw name.
         /// </summary>
         /// <param name="name">Raw name.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <returns>Returns <see cref="CleanDateTimeResult"/> with name and optional year.</returns>
-        public CleanDateTimeResult CleanDateTime(string name)
+        public static CleanDateTimeResult CleanDateTime(string name, NamingOptions namingOptions)
         {
-            return CleanDateTimeParser.Clean(name, _options.CleanDateTimeRegexes);
+            return CleanDateTimeParser.Clean(name, namingOptions.CleanDateTimeRegexes);
         }
     }
 }

Emby.Notifications/CoreNotificationTypes.cs

@@ -75,10 +75,6 @@ namespace Emby.Notifications
                      Type = NotificationType.VideoPlaybackStopped.ToString()
                 },
                 new NotificationTypeInfo
-                {
-                     Type = NotificationType.CameraImageUploaded.ToString()
-                },
-                new NotificationTypeInfo
                 {
                      Type = NotificationType.UserLockedOut.ToString()
                 },
@@ -114,10 +110,6 @@ namespace Emby.Notifications
             {
                 note.Category = _localization.GetLocalizedString("Plugin");
             }
-            else if (note.Type.IndexOf("CameraImageUploaded", StringComparison.OrdinalIgnoreCase) != -1)
-            {
-                note.Category = _localization.GetLocalizedString("Sync");
-            }
             else if (note.Type.IndexOf("UserLockedOut", StringComparison.OrdinalIgnoreCase) != -1)
             {
                 note.Category = _localization.GetLocalizedString("User");

Emby.Notifications/Emby.Notifications.csproj

@@ -9,8 +9,6 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
@@ -25,14 +23,9 @@
 
   <!-- Code analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-
 </Project>

Emby.Notifications/NotificationEntryPoint.cs

@@ -77,7 +77,6 @@ namespace Emby.Notifications
         {
             _libraryManager.ItemAdded += OnLibraryManagerItemAdded;
             _appHost.HasPendingRestartChanged += OnAppHostHasPendingRestartChanged;
-            _appHost.HasUpdateAvailableChanged += OnAppHostHasUpdateAvailableChanged;
             _activityManager.EntryCreated += OnActivityManagerEntryCreated;
 
             return Task.CompletedTask;
@@ -132,25 +131,6 @@ namespace Emby.Notifications
             return _config.GetConfiguration<NotificationOptions>("notifications");
         }
 
-        private async void OnAppHostHasUpdateAvailableChanged(object? sender, EventArgs e)
-        {
-            if (!_appHost.HasUpdateAvailable)
-            {
-                return;
-            }
-
-            var type = NotificationType.ApplicationUpdateAvailable.ToString();
-
-            var notification = new NotificationRequest
-            {
-                Description = "Please see jellyfin.org for details.",
-                NotificationType = type,
-                Name = _localization.GetLocalizedString("NewVersionIsAvailable")
-            };
-
-            await SendNotification(notification, null).ConfigureAwait(false);
-        }
-
         private void OnLibraryManagerItemAdded(object? sender, ItemChangeEventArgs e)
         {
             if (!FilterItem(e.Item))
@@ -325,7 +305,6 @@ namespace Emby.Notifications
 
             _libraryManager.ItemAdded -= OnLibraryManagerItemAdded;
             _appHost.HasPendingRestartChanged -= OnAppHostHasPendingRestartChanged;
-            _appHost.HasUpdateAvailableChanged -= OnAppHostHasUpdateAvailableChanged;
             _activityManager.EntryCreated -= OnActivityManagerEntryCreated;
 
             _disposed = true;

Emby.Photos/Emby.Photos.csproj

@@ -22,20 +22,13 @@
     <TargetFramework>net5.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
-    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <!-- Code Analyzers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
-  </PropertyGroup>
-
 </Project>

Emby.Server.Implementations/AppBase/BaseApplicationPaths.cs

@@ -33,7 +33,7 @@ namespace Emby.Server.Implementations.AppBase
             CachePath = cacheDirectoryPath;
             WebPath = webDirectoryPath;
 
-            DataPath = Path.Combine(ProgramDataPath, "data");
+            _dataPath = Directory.CreateDirectory(Path.Combine(ProgramDataPath, "data")).FullName;
         }
 
         /// <summary>
@@ -55,11 +55,7 @@ namespace Emby.Server.Implementations.AppBase
         /// Gets the folder path to the data directory.
         /// </summary>
         /// <value>The data directory.</value>
-        public string DataPath
-        {
-            get => _dataPath;
-            private set => _dataPath = Directory.CreateDirectory(value).FullName;
-        }
+        public string DataPath => _dataPath;
 
         /// <inheritdoc />
         public string VirtualDataPath => "%AppDataPath%";

Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs

@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -23,6 +25,11 @@ namespace Emby.Server.Implementations.AppBase
 
         private readonly ConcurrentDictionary<string, object> _configurations = new ConcurrentDictionary<string, object>();
 
+        /// <summary>
+        /// The _configuration sync lock.
+        /// </summary>
+        private readonly object _configurationSyncLock = new object();
+
         private ConfigurationStore[] _configurationStores = Array.Empty<ConfigurationStore>();
         private IConfigurationFactory[] _configurationFactories = Array.Empty<IConfigurationFactory>();
 
@@ -31,11 +38,6 @@ namespace Emby.Server.Implementations.AppBase
         /// </summary>
         private bool _configurationLoaded;
 
-        /// <summary>
-        /// The _configuration sync lock.
-        /// </summary>
-        private readonly object _configurationSyncLock = new object();
-
         /// <summary>
         /// The _configuration.
         /// </summary>
@@ -297,25 +299,29 @@ namespace Emby.Server.Implementations.AppBase
         /// <inheritdoc />
         public object GetConfiguration(string key)
         {
-            return _configurations.GetOrAdd(key, k =>
-            {
-                var file = GetConfigurationFile(key);
-
-                var configurationInfo = _configurationStores
-                    .FirstOrDefault(i => string.Equals(i.Key, key, StringComparison.OrdinalIgnoreCase));
-
-                if (configurationInfo == null)
+            return _configurations.GetOrAdd(
+                key,
+                (k, configurationManager) =>
                 {
-                    throw new ResourceNotFoundException("Configuration with key " + key + " not found.");
-                }
+                    var file = configurationManager.GetConfigurationFile(k);
 
-                var configurationType = configurationInfo.ConfigurationType;
+                    var configurationInfo = Array.Find(
+                        configurationManager._configurationStores,
+                        i => string.Equals(i.Key, k, StringComparison.OrdinalIgnoreCase));
 
-                lock (_configurationSyncLock)
-                {
-                    return LoadConfiguration(file, configurationType);
-                }
-            });
+                    if (configurationInfo == null)
+                    {
+                        throw new ResourceNotFoundException("Configuration with key " + k + " not found.");
+                    }
+
+                    var configurationType = configurationInfo.ConfigurationType;
+
+                    lock (configurationManager._configurationSyncLock)
+                    {
+                        return configurationManager.LoadConfiguration(file, configurationType);
+                    }
+                },
+                this);
         }
 
         private object LoadConfiguration(string path, Type configurationType)

Emby.Server.Implementations/AppBase/ConfigurationHelper.cs

@@ -1,9 +1,6 @@
-#nullable enable
-
 using System;
 using System.IO;
 using System.Linq;
-using MediaBrowser.Common.Extensions;
 using MediaBrowser.Model.Serialization;
 
 namespace Emby.Server.Implementations.AppBase
@@ -36,7 +33,8 @@ namespace Emby.Server.Implementations.AppBase
             }
             catch (Exception)
             {
-                configuration = Activator.CreateInstance(type) ?? throw new ArgumentException($"Provided path ({type}) is not valid.", nameof(type));
+                // Note: CreateInstance returns null for Nullable<T>, e.g. CreateInstance(typeof(int?)) returns null.
+                configuration = Activator.CreateInstance(type)!;
             }
 
             using var stream = new MemoryStream(buffer?.Length ?? 0);
@@ -53,7 +51,8 @@ namespace Emby.Server.Implementations.AppBase
 
                 Directory.CreateDirectory(directory);
                 // Save it after load in case we got new items
-                using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read))
+                // use FileShare.None as this bypasses dotnet bug dotnet/runtime#42790 .
+                using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None))
                 {
                     fs.Write(newBytes, 0, newBytesLen);
                 }