diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 06de1fe87..fbcaa5f13 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -1912,8 +1912,6 @@ srs_error_t SrsRtcConnection::on_stun(SrsUdpMuxSocket* skt, SrsStunPacket* r)
         return err;
     }
 
-    last_stun_time = srs_get_system_time();
-
     // We are running in the ice-lite(server) mode. If client have multi network interface,
     // we only choose one candidate pair which is determined by client.
     update_sendonly_socket(skt);
@@ -2203,11 +2201,16 @@ srs_error_t SrsRtcConnection::start_publish(std::string stream_uri)
     return err;
 }
 
-bool SrsRtcConnection::is_stun_timeout()
+bool SrsRtcConnection::is_alive()
 {
     return last_stun_time + session_timeout < srs_get_system_time();
 }
 
+void SrsRtcConnection::alive()
+{
+    last_stun_time = srs_get_system_time();
+}
+
 void SrsRtcConnection::update_sendonly_socket(SrsUdpMuxSocket* skt)
 {
     // TODO: FIXME: Refine performance.
diff --git a/trunk/src/app/srs_app_rtc_conn.hpp b/trunk/src/app/srs_app_rtc_conn.hpp
index bd805b8ab..761a1a42b 100644
--- a/trunk/src/app/srs_app_rtc_conn.hpp
+++ b/trunk/src/app/srs_app_rtc_conn.hpp
@@ -449,8 +449,10 @@ private:
     // The address list, client may use multiple addresses.
     std::map<std::string, SrsUdpMuxSocket*> peer_addresses_;
 private:
+    // TODO: FIXME: Rename it.
     // The timeout of session, keep alive by STUN ping pong.
     srs_utime_t session_timeout;
+    // TODO: FIXME: Rename it.
     srs_utime_t last_stun_time;
 private:
     // For each RTC session, we use a specified cid for debugging logs.
@@ -521,7 +523,8 @@ public:
     srs_error_t on_dtls_alert(std::string type, std::string desc);
     srs_error_t start_play(std::string stream_uri);
     srs_error_t start_publish(std::string stream_uri);
-    bool is_stun_timeout();
+    bool is_alive();
+    void alive();
     void update_sendonly_socket(SrsUdpMuxSocket* skt);
 // interface ISrsHourGlass
 public:
diff --git a/trunk/src/app/srs_app_rtc_server.cpp b/trunk/src/app/srs_app_rtc_server.cpp
index 92affba4c..9e8dd1bbf 100644
--- a/trunk/src/app/srs_app_rtc_server.cpp
+++ b/trunk/src/app/srs_app_rtc_server.cpp
@@ -312,6 +312,11 @@ srs_error_t SrsRtcServer::on_udp_packet(SrsUdpMuxSocket* skt)
         }
     }
 
+    // When got any packet, the session is alive now.
+    if (session) {
+        session->alive();
+    }
+
     // Notify hijack to handle the UDP packet.
     if (hijacker) {
         bool consumed = false;
@@ -586,7 +591,7 @@ srs_error_t SrsRtcServer::notify(int type, srs_utime_t interval, srs_utime_t tic
     // Check all sessions and dispose the dead sessions.
     for (int i = 0; i < (int)_srs_rtc_manager->size(); i++) {
         SrsRtcConnection* session = dynamic_cast<SrsRtcConnection*>(_srs_rtc_manager->at(i));
-        if (!session || !session->is_stun_timeout() || session->disposing_) {
+        if (!session || !session->is_alive() || session->disposing_) {
             continue;
         }