SOMS/test/WebSocketsSample/EchoApp.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
    <Platforms>AnyCPU;x64</Platforms>
  </PropertyGroup>
</Project>