Closed
Description
Please do not ignore the windows system !!!!
What version of Go are you using (go version)?
go1.7.3
What operating system and processor architecture are you using (go env)?
Windows Server Standard 2007 SP2 32bit
panic: persistConn was already in LRU
goroutine 609111 [running]:
panic(0xa50dc0, 0x125a45d8)
/opt/dev/gopkg/go/src/runtime/panic.go:500 +0x331
net/http.(*connLRU).add(0x125de5b4, 0x1267c510)
/opt/dev/gopkg/go/src/net/http/transport.go:2147 +0x177
net/http.(*Transport).tryPutIdleConn(0x125de5a0, 0x1267c510, 0x0, 0x0)
/opt/dev/gopkg/go/src/net/http/transport.go:678 +0x5d8
net/http.(*persistConn).readLoop.func2(0x0, 0x125f2b01)
/opt/dev/gopkg/go/src/net/http/transport.go:1391 +0x32
net/http.(*persistConn).readLoop(0x1267c510)
/opt/dev/gopkg/go/src/net/http/transport.go:1548 +0xce1
created by net/http.(*Transport).dialConn
/opt/dev/gopkg/go/src/net/http/transport.go:1062 +0xda5
this is part of my code:
func DoRequest(/* som arguments */) {
// Very high frequency call code
var res *http.Response
err = nil
if r.Timeout > 0 {
err = errors.New("timeout")
c := make(chan *httpPeek)
go func() {
newRes, newErr := httpClient.Do(req)
select {
case c <- &httpPeek{newRes, newErr}:
default:
if newErr == nil && newRes != nil && newRes.Body != nil {
// Discard and close so we can reuse it
io.Copy(ioutil.Discard, newRes.Body)
newRes.Body.Close()
}
}
close(c)
}()
select {
case <-time.After(r.Timeout):
case v := <-c:
if v != nil {
res = v.res
err = v.err
}
}
} else {
res, err = httpClient.Do(req)
}
if err != nil {
return nil, err
}
// other code..
}
func init() {
timeout := time.Minute
httpClient = &http.Client{
Transport: &http.Transport{
MaxIdleConnsPerHost: 5,
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
ResponseHeaderTimeout: timeout,
},
Timeout: timeout,
}
}
It's very hard to reproduce, program running about 20 hours, then panic and exit !!