C# client about chirpstack-api

[SchroterQuentin]

If someone have the same issue, here come the solution :

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

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Grpc" Version="2.28.1" />

    <PackageReference Include="Grpc.Tools" Version="2.28.1">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Google.Api.CommonProtos" Version="2.0.0" />

    <Protobuf Include="protobuf/as/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/as/%(RelativePath)" GrpcServices="Client" CompileOutputs="false" />
    <Protobuf Update="protobuf/as/**/frameLog.proto;protobuf/as/**/profiles.proto;protobuf/as/**/integration.proto" GrpcServices="None" />
    <Protobuf Include="protobuf/common/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/common/%(RelativePath)" GrpcServices="None" CompileOutputs="false" />
    <Protobuf Include="protobuf/geo/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/geo/%(RelativePath)" GrpcServices="None" CompileOutputs="false" />
    <Protobuf Include="protobuf/gw/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/gw/%(RelativePath)" GrpcServices="None" CompileOutputs="false" />
    <Protobuf Include="protobuf/nc/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/nc/%(RelativePath)" GrpcServices="None" CompileOutputs="false" />
    <Protobuf Include="protobuf/ns/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/ns/%(RelativePath)" GrpcServices="None" CompileOutputs="false" />
  </ItemGroup>
</Project>

It's important to not generate the C# objects for the google's proto but include them in the tree and reference the Google.Api.CommonProtos as said here https://github.com/googleapis/api-common-protos#packages

[SchroterQuentin]

An exemple of my project :

Chirpstack.Client.csproj

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

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Google.Api.CommonProtos" Version="2.0.0" />
    <PackageReference Include="Grpc" Version="2.28.1" />

    <PackageReference Include="Grpc.Tools" Version="2.28.1">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

  <ItemGroup>
    <Protobuf Include="protobuf/**/*.proto" ProtoRoot="protobuf" OutputDir="protos.local/%(RelativePath)" CompileOutputs="Both" />
  </ItemGroup>
</Project>

And the errors :

Google.Protobuf.Tools.targets(313,5): warning : Some expected protoc outputs were not generated.
protos.local/FrameLogGrpc.cs
protos.local/ProfilesGrpc.cs
...

protos.local/Http.cs(490,47): warning CS0436: The type 'HttpRule' in '***/ChirpStack.Client/protos.local/Http.cs' conflicts with the imported type 'HttpRule' in 'Google.Api.CommonProtos, Version=2.0.0.0, Culture=neutral, PublicKeyToken=3ec5ea7f18953e47'. Using the type defined in '***/ChirpStack.Client/protos.local/Http.cs'. [***/ChirpStack.Client/ChirpStack.Client.csproj]

protos.local/ServiceProfile.cs(733,25): error CS0234: The type or namespace name 'ServiceProfile' does not exist in the namespace 'Api'

Half of the errors maybe because of this grpc/grpc#17672