[疑问] grpc怎么测试是否正常工作 moe 3年前 docker 里跑了个grpc程序，监听2002端口，curl命令返回如下 curl localhost:2002 Warning: Binary output can mess up your terminal. Use "–output -" to tell Warning: curl to output it to your terminal anyway, or consider "–output Warning: <FILE>" to save to a file. 复制代码 nginx 里 grpc_pass grpc://127.0.0.1:2002; 老是返回这个错误 [error] 13105#0: *116 upstream rejected request with error 0 while reading response header from upstream 复制代码 我应该怎么确定grpc程序正常工作？