build/sources.props

<Project>
  <Import Project="$(DotNetRestoreSourcePropsPath)" Condition="'$(DotNetRestoreSourcePropsPath)' != ''"/>

  <PropertyGroup Label="RestoreSources">
    <RestoreSources>
      $(DotNetRestoreSources);
      https://www.myget.org/F/azure-signalr-test-packages/api/v3/index.json;
      https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json;
    </RestoreSources>
    <RestoreSources Condition="'$(DotNetBuildOffline)' != 'true'">
      $(RestoreSources);
      https://api.nuget.org/v3/index.json;
    </RestoreSources>
    <RestoreSources Condition="'$(UseLocalFeed)' == 'true'">
      $(LocalFeed);
      https://api.nuget.org/v3/index.json;
    </RestoreSources>
    <RestoreSources Condition="'$(AzureSignalRSDKE2ETest)' == 'true'">
      https://www.myget.org/F/azure-signalr-dev/api/v3/index.json;
      https://api.nuget.org/v3/index.json;
    </RestoreSources>
  </PropertyGroup>
</Project>