geerpc 在超时处理方面的 bug

~/ExcellentOriginSource/7days-golang/gee-rpc/day4-timeout$ go test -v
=== RUN   TestClient_dialTimeout
=== PAUSE TestClient_dialTimeout
=== RUN   TestClient_Call
=== PAUSE TestClient_Call
=== RUN   TestNewService
2020/12/07 12:10:47 rpc server: register Foo.Sum
--- PASS: TestNewService (0.00s)
=== RUN   TestMethodType_Call
2020/12/07 12:10:47 rpc server: register Foo.Sum
--- PASS: TestMethodType_Call (0.00s)
=== CONT  TestClient_dialTimeout
=== CONT  TestClient_Call
2020/12/07 12:10:47 rpc server: register Bar.Timeout
=== RUN   TestClient_dialTimeout/timeout
=== RUN   TestClient_Call/client_timeout
=== RUN   TestClient_dialTimeout/0
=== RUN   TestClient_Call/server_handle_timeout
--- PASS: TestClient_dialTimeout (3.00s)
    --- PASS: TestClient_dialTimeout/timeout (1.00s)
    --- PASS: TestClient_dialTimeout/0 (2.00s)
# 在此处失去响应，需要手动中止程序或等待10m后程序崩溃退出

func (client *Client) Call(ctx context.Context, serviceMethod string, args, reply interface{}) error {
	call := client.Go(serviceMethod, args, reply, make(chan *Call, 1))
	select {
	case <-ctx.Done():
		client.removeCall(call.Seq)
		return errors.New("rpc client: call failed: " + ctx.Err().Error())
	case call := <-call.Done:
		return call.Error
       }
}