Question

我已经研究了很长时间，浏览了互联网上所有不同的帖子，以查看是否可以找到遇到相同问题的人，但是我似乎是唯一遇到此问题的人。

我有一个运行Grpc基本问候服务的ASP.net Core服务器。使用程序“ BloomRPG”调用此服务器效果很好，并且响应时间极佳。但是，当我尝试从自己的书面客户端（非常基本）执行相同操作时，出现以下错误：

在客户端上：

dbug：Grpc.Net.Client.Internal.GrpcCall [1] 开始gRPC调用。方法类型：“一元”，URI：“ https://www.MYSERVER.com:50005/greet.Greeter/SayHello”。 dbug：Grpc.Net.Client.Internal.GrpcCall [18] 正在发送消息。记录：Grpc.Net.Client.Internal.GrpcCall [21] 将“ TestService1.HelloRequest”序列化为15个字节的消息。记录：Grpc.Net.Client.Internal.GrpcCall [19] 讯息已发送。失败：Grpc.Net.Client.Internal.GrpcCall [6] 启动gRPC调用时出错。 System.Net.Http.HttpRequestException：发送请求时发生错误。 ---> System.IO.IOException：响应过早结束。在System.Net.Http.HttpConnection.FillAsync（）在System.Net.Http.HttpConnection.ReadNextResponseHeaderLineAsync（BooleanfoldedHeadersAllowed）在System.Net.Http.HttpConnection.SendAsyncCore（HttpRequestMessage请求，CancellationToken cancelToken） ---内部异常堆栈跟踪的结尾--- 在System.Net.Http.HttpConnection.SendAsyncCore（HttpRequestMessage请求，CancellationToken cancelToken）在System.Net.Http.HttpConnectionPool.SendWithNtConnectionAuthAsync（HttpConnection连接，HttpRequestMessage请求，布尔值doRequestAuth，CancellationToken取消令牌）在System.Net.Http.HttpConnectionPool.SendWithRetryAsync（HttpRequestMessage请求，布尔值doRequestAuth，CancellationToken cancelledToken）在System.Net.Http.RedirectHandler.SendAsync（HttpRequestMessage请求，CancellationToken cancelToken）在System.Net.Http.DiagnosticsHandler.SendAsync（HttpRequestMessage请求，CancellationToken cancelledToken）在System.Net.Http.HttpClient.FinishSendAsyncUnbuffered（任务1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts) at Grpc.Net.Client.Internal.GrpcCall 2.RunCall（HttpRequestMessage请求，Nullable 1 timeout) info: Grpc.Net.Client.Internal.GrpcCall[3] Call failed with gRPC error status. Status code: 'Internal', Message: 'Error starting gRPC call. HttpRequestException: An error occurred while sending the request. IOException: The response ended prematurely.'. dbug: Grpc.Net.Client.Internal.GrpcCall[4] Finished gRPC call. dbug: Grpc.Net.Client.Internal.GrpcCall[8] gRPC call canceled. Unhandled exception. Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Error starting gRPC call. HttpRequestException: An error occurred while sending the request. IOException: The response ended prematurely.", DebugException="System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.IO.IOException: The response ended prematurely. at System.Net.Http.HttpConnection.FillAsync() at System.Net.Http.HttpConnection.ReadNextResponseHeaderLineAsync(Boolean foldedHeadersAllowed) at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken) --- End of inner exception stack trace --- at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken) at System.Net.Http.HttpConnectionPool.SendWithNtConnectionAuthAsync(HttpConnection connection, HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken) at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken) at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) at System.Net.Http.DiagnosticsHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task 1 sendTask，HttpRequestMessage请求，CancellationTokenSource cts，布尔值disposeCts）处在Grpc.Net.Client.Internal.GrpcCall 2.RunCall(HttpRequestMessage request, Nullable 1超时）”）在C：\ Users \ MYUSERNAME \ source \ repos \ grpc \ TestgrpcClient \ TestgrpcClient \ Program.cs：line 64中的GrpcGreeterClient.Program.Main（String [] args）在GrpcGreeterClient.Program。（String [] args）

在服务器上：

失败：Microsoft.AspNetCore.Server.Kestrel [0] 未在仅HTTP / 2的终结点上协商TLS上的HTTP / 2。

由于我成功使用BloomRPC调用了服务，所以我想问题出在我的客户端上：

客户代码：

        AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true);


        var loggerFactory = LoggerFactory.Create(logging =>
        {
            logging.AddConsole();
            logging.SetMinimumLevel(LogLevel.Trace);
        });


        var httpclient = new HttpClient();
        httpclient.DefaultRequestVersion = new Version(2, 0);

        




        using var channel = GrpcChannel.ForAddress("https://www.MYSERVER.com:50005",
            new GrpcChannelOptions { LoggerFactory = loggerFactory, HttpClient = httpclient});
        

        var client = new Greeter.GreeterClient(channel);
        
        var reply = await client.SayHelloAsync(
                          new HelloRequest { Name = "GreeterClient" });
        Console.WriteLine("Greeting: " + reply.Message);
        Console.WriteLine("Press any key to exit...");
        Console.ReadKey();

有人知道我接下来可以尝试什么？我觉得我已经用尽了所有的选择：（

Answer 1

感谢@jdweng，我弄清楚了导致问题的原因。

强制性公司代理服务器正在干预，在httpclienthandler中将UseProxy = false设置为我已解决了该问题，现在我可以无问题地调用我的gRPC服务器了！

.net Core Grpc客户端无法调用Greeter服务

1 个答案: