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p2p: properly decrement peer wait group counter for setup errors

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This commit is contained in:
Felix Lange 2015-04-10 13:20:26 +02:00
parent f1d710af00
commit 145330fdf2
1 changed files with 11 additions and 0 deletions
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11
p2p/server.go
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@ -344,6 +344,10 @@ func (srv *Server) dialNode(dest *discover.Node) {
glog.V(logger.Debug).Infof("Dialing %v\n", dest)
conn, err := srv.Dialer.Dial("tcp", addr.String())
if err != nil {
// dialLoop adds to the wait group counter when launching
// dialNode, so we need to count it down again. startPeer also
// does that when an error occurs.
srv.peerWG.Done()
glog.V(logger.Detail).Infof("dial error: %v", err)
return
}
@ -356,11 +360,17 @@ func (srv *Server) Self() *discover.Node {
func (srv *Server) startPeer(fd net.Conn, dest *discover.Node) {
// TODO: handle/store session token
// Run setupFunc, which should create an authenticated connection
// and run the capability exchange. Note that any early error
// returns during that exchange need to call peerWG.Done because
// the callers of startPeer added the peer to the wait group already.
fd.SetDeadline(time.Now().Add(handshakeTimeout))
conn, err := srv.setupFunc(fd, srv.PrivateKey, srv.ourHandshake, dest)
if err != nil {
fd.Close()
glog.V(logger.Debug).Infof("Handshake with %v failed: %v", fd.RemoteAddr(), err)
srv.peerWG.Done()
return
}
conn.MsgReadWriter = &netWrapper{
@ -371,6 +381,7 @@ func (srv *Server) startPeer(fd net.Conn, dest *discover.Node) {
if ok, reason := srv.addPeer(conn.ID, p); !ok {
glog.V(logger.Detail).Infof("Not adding %v (%v)\n", p, reason)
p.politeDisconnect(reason)
srv.peerWG.Done()
return
}
// The handshakes are done and it passed all checks.