仅使用 GRPC 连接到对话流 StreamingDetectIntent，卡在等待 responseStream.MoveNext

我正在尝试将 DialogFlow API v2 与 Unity 结合使用。

由于 Unity 还没有官方 SDK，所以我使用了 Grpc beta unity SDK 以及使用 Grpc 工具中的 Protobuf 和 protoc 创建的生成的 C# 代码

Grpc beta unity sdk 隐藏在此链接中。https://packages.grpc.io/ https://packages.grpc.io/只需单击构建 ID，您就会找到构建的 Unity 包。

我导入了 Google.Apis.Auth.OAuth2 和 Grpc.Auth，它们未包含在官方 Grpc unity beta sdk 中。

然后我编写了这段代码，除了等待responseStream.MoveNext()被卡住之外，它似乎工作正常。

我相信主要原因是我不确定在哪里设置终点的路径，即“/v2/projects/project-id/agent/intents”

    GoogleCredential credential = GoogleCredential.FromJson(privateKey);

    Grpc.Core.Channel channel = new Grpc.Core.Channel("dialogflow.googleapis.com", credential.ToChannelCredentials());

    var client = new SessionsClient(channel);

    CallOptions options = new CallOptions();
    var duplexStream = client.StreamingDetectIntent();

    var responseHandlerTask = System.Threading.Tasks.Task.Run(async () =>
    {
        IAsyncEnumerator<StreamingDetectIntentResponse> responseStream = duplexStream.ResponseStream;
        while (await responseStream.MoveNext())//stuck here
        {
            StreamingDetectIntentResponse response = responseStream.Current;
        }
        // The response stream has completed
    });

    // Send requests to the server
    bool done = false;
    while (!done)
    {
        // Initialize a request
        var queryInput = new QueryInput();
        queryInput.AudioConfig = new InputAudioConfig();
        queryInput.AudioConfig.LanguageCode = "ja";
        queryInput.AudioConfig.SampleRateHertz = 141000;
        queryInput.AudioConfig.AudioEncoding = AudioEncoding.Linear16;

        StreamingDetectIntentRequest request = new StreamingDetectIntentRequest
        {
            Session = "",
            QueryInput = queryInput,
        };
        var bytes = File.ReadAllBytes("test.wav");
        request.InputAudio = Google.Protobuf.ByteString.CopyFrom(bytes);
        try
        {
            await duplexStream.RequestStream.WriteAsync(request);
        }
        catch (System.Exception e)
        {
            context.Post(state =>
            {
                Debug.LogErrorFormat("{0}\n{1}\n{2}\n{3}", e.Message, e.HelpLink, e.Source, e.StackTrace);
            }, null);
        }

        done = true;
    }

    await duplexStream.RequestStream.CompleteAsync();
    await responseHandlerTask;

感谢您的提前。

我没有在请求中添加更正会话。以下修复了它。

StreamingDetectIntentRequest request = new StreamingDetectIntentRequest
{
    Session = "projects/project-id/agent/sessions/sessionid",
    QueryInput = queryInput,
};