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net: The Recv-Q is blocked, but read tcp conn return 0 #20785

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barnettZQG opened this issue Jun 24, 2017 · 2 comments

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commented Jun 24, 2017

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go 1.8.3

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/qingguo/gopath:/Users/qingguo/gowork:/Users/qingguo/gopath/src/github.com/docker/docker/vendor"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/3z/1m_93x4s7nd0kfwd19zydxw40000gp/T/go-build584362436=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

I'm doing a large amount of data the TCP one-way transmission service.But I find that when there is abnormal situation occurs, there will be a blocking recv - q and send - q.But the service side the read data returns 0.

What did you expect to see?

tcp4  478881      0  127.0.0.1.6362         127.0.0.1.51116        ESTABLISHED
tcp4       0 146678  127.0.0.1.51116        127.0.0.1.6362         FIN_WAIT_1
tcp4  395480      0  127.0.0.1.6362         127.0.0.1.51115        ESTABLISHED
tcp4       0 146678  127.0.0.1.51115        127.0.0.1.6362         FIN_WAIT_1
tcp4  522951      0  127.0.0.1.6362         127.0.0.1.51114        ESTABLISHED
tcp4       0 146678  127.0.0.1.51114        127.0.0.1.6362         FIN_WAIT_1
tcp4  392881      0  127.0.0.1.6362         127.0.0.1.51113        ESTABLISHED
tcp4       0 146678  127.0.0.1.51113        127.0.0.1.6362         FIN_WAIT_1

What did you see instead?

@bradfitz

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commented Jun 24, 2017

There isn't enough information here to determine whether there's a bug in Go or a bug in your code.

Please provide code.

@bradfitz bradfitz added this to the Unplanned milestone Jun 24, 2017

@bradfitz bradfitz changed the title The Recv-Q is blocked, but read tcp conn return 0 net: The Recv-Q is blocked, but read tcp conn return 0 Jun 24, 2017

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commented Jul 24, 2017

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)

@gopherbot gopherbot closed this Jul 24, 2017

@golang golang locked and limited conversation to collaborators Jul 24, 2018

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