diff --git a/trunk/research/players/rtc_publisher.html b/trunk/research/players/rtc_publisher.html
index c8206ed79..ce183782d 100644
--- a/trunk/research/players/rtc_publisher.html
+++ b/trunk/research/players/rtc_publisher.html
@@ -46,7 +46,7 @@
     </div>
 
     <label></label>
-    <video id="rtc_media_player" controls autoplay></video>
+    <video id="rtc_media_player" autoplay muted></video>
 
     <footer>
         <p></p>
diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 58d6e01c2..256ef3cf5 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -2145,29 +2145,20 @@ srs_error_t SrsRtcPublisher::notify(int type, srs_utime_t interval, srs_utime_t
 
 SrsRtcSession::SrsRtcSession(SrsRtcServer* s, SrsRequest* r, const std::string& un, int context_id)
 {
-    rtc_server = s;
-    session_state = INIT;
-
-    dtls_session = new SrsDtlsSession(this);
-    // TODO: FIXME: Check error.
-    dtls_session->initialize(req);
-
-    sender = NULL;
-
     username = un;
-    
-    last_stun_time = srs_get_system_time();
-
     req = r->copy();
-    source = NULL;
-
     cid = context_id;
     encrypt = true;
 
-    // TODO: FIXME: Support reload.
-    sessionStunTimeout = _srs_config->get_rtc_stun_timeout(req->vhost);
-
+    source = NULL;
     publisher = NULL;
+    sender = NULL;
+    rtc_server = s;
+    dtls_session = new SrsDtlsSession(this);
+
+    session_state = INIT;
+    last_stun_time = 0;
+    sessionStunTimeout = 0;
 }
 
 SrsRtcSession::~SrsRtcSession()
@@ -2188,6 +2179,21 @@ void SrsRtcSession::switch_to_context()
     _srs_context->set_id(cid);
 }
 
+srs_error_t SrsRtcSession::initialize()
+{
+    srs_error_t err = srs_success;
+
+    if ((err = dtls_session->initialize(req)) != srs_success) {
+        return srs_error_wrap(err, "init");
+    }
+
+    // TODO: FIXME: Support reload.
+    sessionStunTimeout = _srs_config->get_rtc_stun_timeout(req->vhost);
+    last_stun_time = srs_get_system_time();
+
+    return err;
+}
+
 srs_error_t SrsRtcSession::on_stun(SrsUdpMuxSocket* skt, SrsStunPacket* stun_req)
 {
     srs_error_t err = srs_success;
@@ -3110,7 +3116,13 @@ srs_error_t SrsRtcServer::create_rtc_session(
 
     int cid = _srs_context->get_id();
     SrsRtcSession* session = new SrsRtcSession(this, req, username, cid);
+    if ((err = session->initialize()) != srs_success) {
+        srs_freep(session);
+        return srs_error_wrap(err, "init");
+    }
+
     map_username_session.insert(make_pair(username, session));
+    *psession = session;
 
     local_sdp.set_ice_ufrag(local_ufrag);
     local_sdp.set_ice_pwd(local_pwd);
@@ -3132,8 +3144,6 @@ srs_error_t SrsRtcServer::create_rtc_session(
 
     session->set_session_state(WAITING_STUN);
 
-    *psession = session;
-
     return err;
 }
 
diff --git a/trunk/src/app/srs_app_rtc_conn.hpp b/trunk/src/app/srs_app_rtc_conn.hpp
index 838cce636..0797a0274 100644
--- a/trunk/src/app/srs_app_rtc_conn.hpp
+++ b/trunk/src/app/srs_app_rtc_conn.hpp
@@ -354,6 +354,7 @@ public:
 
     void switch_to_context();
 public:
+    srs_error_t initialize();
     srs_error_t on_stun(SrsUdpMuxSocket* skt, SrsStunPacket* stun_req);
     srs_error_t on_dtls(SrsUdpMuxSocket* skt);
     srs_error_t on_rtcp(SrsUdpMuxSocket* skt);