func (s *Session) handleStream(stream conn.Conn) {
defer s.recoverPanic("Session.handleStream")
defer stream.Close()
// make sure we only process streams while we're not shutting down
if err := s.guard.Enter(); err != nil {
stream.Error("Failing stream, session is shutting down")
return
}
defer s.guard.Exit()
raw, err := proto.ReadMsg(stream)
if err != nil {
stream.Error("Failed to read message: %v")
go s.Shutdown()
return
}
switch msg := raw.(type) {
case *proto.Bind:
err = s.handleBind(stream, msg)
case *proto.Unbind:
err = s.handleUnbind(stream, msg)
default:
err = fmt.Errorf("Unknown message type: %v", reflect.TypeOf(raw))
}
if err != nil {
stream.Error("Error on stream: %v", err)
go s.Shutdown()
return
}
return
}
func (t *Tunnel) handlePublic(publicConn conn.Conn) {
defer publicConn.Close()
defer t.recoverPanic("Tunnel.handlePublic")
publicConn.Info("New connection from %v", publicConn.RemoteAddr())
// connection hook
if err := t.hooks.OnConnectionOpen(t, publicConn); err != nil {
t.Error("OnConnectionOpen hook failed: %v", err)
return
}
startTime := time.Now()
// open a proxy stream
proxyConn, err := t.sess.openProxy(publicConn.RemoteAddr().String(), t.url)
if err != nil {
t.Error("Failed to open proxy connection: %v", err)
return
}
defer proxyConn.Close()
// join the public and proxy connections
bytesIn, bytesOut := conn.Join(publicConn, proxyConn)
if err = t.hooks.OnConnectionClose(t, publicConn, time.Now().Sub(startTime), bytesIn, bytesOut); err != nil {
t.Error("OnConnectionClose hook failed: %v", err)
return
}
}