.net 核心 Grpc 客户端无法调用 Greeter 服务

Question

我已经看了很长时间，浏览了互联网上所有不同的帖子，看看我是否能找到有同样问题的人，但不知何故，我似乎是唯一有这个问题的人。

我有一个 ASP.net 核心服务器运行 Grpc 的基本欢迎服务。 使用程序“BloomRPG”调用此服务器效果很好，并且响应时间极好。 但是，当我尝试从自己编写的（非常基本的）客户端执行相同操作时，出现以下错误：

在客户端：

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] 发送消息。 trce: Grpc.Net.Client.Internal.GrpcCall[21] 将“TestService1.HelloRequest”序列化为 15 字节消息。 trce: Grpc.Net.Client.Internal.GrpcCall[19] 消息已发送。 失败：Grpc.Net.Client.Internal.GrpcCall[6] 启动 gRPC 调用时出错。 System.Net.Http.HttpRequestException：发送请求时出错。 ---> System.IO.IOException：响应提前结束。 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 请求，Boolean doRequestAuth，CancellationToken cancelToken）在 System.Net.Z9D4D43DE68F0 B3555D5A5EF5DC05BB95Z.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 request, CancellationTokenSource cts, Boolean disposeCts) at Grpc.Net.Client.Internal.GrpcCall 2.RunCall(HttpRequestMessage request, 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 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 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 request, CancellationTokenSource cts, Boolean disposeCts) at Grpc.Net .Client.Internal.GrpcCall 2.RunCall(HttpRequestMessage request, Nullable 1 timeout)") 在 GrpcGreeterCli ent.Program.Main(String[] args) 在 C:\Users\MYUSERNAME\source\repos\grpc\TestgrpcClient\TestgrpcClient\Program.cs：第 64 行 GrpcGreeterClient.Program.(String[] args) s

在服务器上：

失败：Microsoft.AspNetCore.Server.Kestrel[0] HTTP/2 over TLS 未在仅 HTTP/2 端点上协商。

由于我使用 BloomRPC 成功调用了该服务，我想问题出在我的客户身上：

客户端代码：

        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吗？ 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。

强制公司代理服务器正在干扰，在 httpclienthandler 中设置 UseProxy = false 为我解决了这个问题，我现在可以毫无问题地调用我的 gRPC 服务器！