连接被关闭时没有return err "connection has been closed wait read"

[KafuuEriri]

客户端请求服务端时，connection被关闭，服务端未返回err
客户端代码

streamCli, err := cliebt.CreateStreamTransport(h.ctx, req)
	if err != nil {
		klog.CtxErrorf(h.ctx, "create stream transport to young server failed with error: %s", err.Error())
		return
	}

	klog.CtxInfof(h.ctx, "create stream transport to young server success")
	go func() {
		h.ReportTaskResult()
	}()

在客户端日志中，显示

create stream transport to young server success

而在服务端日志中，打印出

WARNING transport: http2Server.HandleStreams failed to read frame: connection has been closed wait read

我查询到日志的来源是

kitex/pkg/remote/trans/nphttp2/grpc/http2_server.go

Line 412 in 1a81002

klog.CtxWarnf(t.ctx, "transport: http2Server.HandleStreams failed to read frame: %v", err)

[YangruiEmma]

看起来是client关闭了连接，你可以用tcpdump抓包确认下

[KafuuEriri]

看起来是client关闭了连接，你可以用tcpdump抓包确认下

这个错误是偶发的很难复现。是否可能因为没有配置server.WithReadWriteTimeout
导致使用默认的时间而超时

[Marina-Sakai]

@KafuuEriri That's not likely to be the cause. I guess there might be some issues related to grpc but it's hard to confirm. If you have this issue again, please tell me with the tcpdump.