tun2: set deadline before creating stream

lib/tun2/server.go

@@ -158,6 +158,8 @@ func (s *Server) ListenAndServe() error {
 			s.connlock.Lock()
 
 			for _, c := range s.conns {
+				c.session.SetDeadline(time.Now().Add(time.Second))
+
 				req, err := http.NewRequest("GET", "http://backend/health", nil)
 				if err != nil {
 					panic(err)