Question

我正在使用Envoys http-grpc网桥通过HTTP发送application / grpc类型的数据，并调用grpc服务。这就是Lyft内部在其API中使用btw的方式。它必须采用以下格式：

1个字节：grpc数据，grpc数据的0、4字节网络/二进制长度。

这是我的代码：

private static void grpcPostRESTAPI() throws Exception
{
    DefaultHttpClient httpClient = new DefaultHttpClient();

  String content = "//x00//x00//x00//x00//x15{“message”:”Hello”}";

try
{
    //Define a postRequest request
    HttpPost postRequest = new   HttpPost("http://10.10.xx.xx:31313/com.test.echo.EchoService/echo");

    //Set the API media type in http content-type header
    postRequest.addHeader("content-type", "application/grpc");

    //Set the request post body
    StringEntity userEntity = new StringEntity(content);
    postRequest.setEntity(userEntity);

    //Send the request; It will immediately return the response in    HttpResponse object if any
    HttpResponse response = httpClient.execute(postRequest);

    //verify the valid error code first
    int statusCode = response.getStatusLine().getStatusCode();
     if (statusCode != 201)
     {
           throw new RuntimeException("Failed with HTTP error code : "  + statusCode);
    }
  }
finally
  {
    //Important: Close the connect
    httpClient.getConnectionManager().shutdown();
   }

}

在GRPC服务中，我看到以下错误：

io.grpc.netty.shaded.io.grpc.netty.NettyServerStream$TransportState deframeFailed
WARNING: Exception processing message
io.grpc.StatusRuntimeException: INTERNAL: gRPC frame header malformed:  reserved bits not zero
 at io.grpc.Status.asRuntimeException(Status.java:524)
 at  io.grpc.internal.MessageDeframer.processHeader(MessageDeframer.java:377)
 at io.grpc.internal.MessageDeframer.deliver(MessageDeframer.java:267)
 at io.grpc.internal.MessageDeframer.request(MessageDeframer.java:161)
 at  io.grpc.internal.AbstractStream$TransportState.requestMessagesFromDeframer(AbstractStream.java:205)

以下是正在处理此问题的GRPC服务器代码：

 private static final int HEADER_LENGTH = 5;
 private static final int COMPRESSED_FLAG_MASK = 1;
 private static final int RESERVED_MASK = 0xFE;

引发异常的地方：

  private void processHeader() {
     int type = nextFrame.readUnsignedByte();
     if ((type & RESERVED_MASK) != 0) {
     throw Status.INTERNAL.withDescription(
         "gRPC frame header malformed: reserved bits not zero")
        .asRuntimeException();
  }

Answer 1

您应该使用RPC请求而不是发送字符串：

 String content = "//x00//x00//x00//x00//x15{“message”:”Hello”}";

内部：gRPC帧标头格式错误：保留位不为零

1 个答案: