cwinfo/yggdrasil-go
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Fix concurrent map write in tcp.go

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This commit is contained in:
Neil Alexander 2019-01-16 13:20:12 +00:00
parent 8fa9b84108
commit 4fba558638
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1 changed files with 4 additions and 0 deletions
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4
src/yggdrasil/tcp.go
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@ -125,8 +125,10 @@ func (iface *tcpInterface) listen() error {
} }
iface.serv, err = lc.Listen(ctx, "tcp", iface.tcp_addr) iface.serv, err = lc.Listen(ctx, "tcp", iface.tcp_addr)
if err == nil { if err == nil {
iface.mutex.Lock()
iface.calls = make(map[string]struct{}) iface.calls = make(map[string]struct{})
iface.conns = make(map[tcpInfo](chan struct{})) iface.conns = make(map[tcpInfo](chan struct{}))
iface.mutex.Unlock()
go iface.listener() go iface.listener()
return nil return nil
} }
@ -187,7 +189,9 @@ func (iface *tcpInterface) call(saddr string, socksaddr *string, sintf string) {
if iface.isAlreadyCalling(saddr) { if iface.isAlreadyCalling(saddr) {
return return
} }
iface.mutex.Lock()
iface.calls[callname] = struct{}{} iface.calls[callname] = struct{}{}
iface.mutex.Unlock()
defer func() { defer func() {
// Block new calls for a little while, to mitigate livelock scenarios // Block new calls for a little while, to mitigate livelock scenarios
time.Sleep(default_tcp_timeout) time.Sleep(default_tcp_timeout)