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docker-proxy cannot exit after send SIGINT #2421

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docker-proxy cannot exit after send SIGINT #2421

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21 changes: 19 additions & 2 deletions portmapper/proxy.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ import (
"net"
"os"
"os/exec"
"syscall"
"time"

"github.com/ishidawataru/sctp"
Expand Down Expand Up @@ -65,10 +66,26 @@ func (p *proxyCommand) Start() error {

func (p *proxyCommand) Stop() error {
if p.cmd.Process != nil {
if err := p.cmd.Process.Signal(os.Interrupt); err != nil {
if err := p.cmd.Process.Signal(syscall.SIGTERM); err != nil {
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@kolyshkin kolyshkin Sep 3, 2019

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What is the reason to replace SIGINT with SIGTERM?

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@thaJeztah thaJeztah Sep 3, 2019

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was wondering as well; should we handle both ? (for backward compat)?

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@mingfukuang mingfukuang Sep 4, 2019 •
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To be honest, i’m also not sure why send SIGINT other than SIGTERM. Proxy will deal with both of them . According appearance of problem， SIGINT looks can't got response. Besides, semantically speaking，SIGTERM could be suitable. so , i made this change.
Looking forward to your further suggestions ：-）

return err
}
return p.cmd.Wait()

waitChan := make(chan error)
go func() {
waitChan <- p.cmd.Wait()
}()

t := time.NewTimer(15 * time.Second)
defer t.Stop()

select {
case result := <-waitChan:
return result
case <-t.C:
if err := p.cmd.Process.Signal(os.Kill); err != nil {
return err
}
}
}
return nil
}
Expand Down