diff --git a/trunk/research/api-server/server.py b/trunk/research/api-server/server.py
index 5e860145f..99918cd87 100755
--- a/trunk/research/api-server/server.py
+++ b/trunk/research/api-server/server.py
@@ -343,7 +343,7 @@ class RESTChats(object):
         self.__chat_lock = threading.Lock();
 
         # dead time in seconds, if exceed, remove the chat.
-        self.__dead_time = 30;
+        self.__dead_time = 15;
 
     def GET(self):
         enable_crossdomain()
diff --git a/trunk/research/players/js/srs.player.js b/trunk/research/players/js/srs.player.js
old mode 100644
new mode 100755
diff --git a/trunk/research/players/js/srs.publisher.js b/trunk/research/players/js/srs.publisher.js
old mode 100644
new mode 100755
index 43823b744..b46d51ef7
--- a/trunk/research/players/js/srs.publisher.js
+++ b/trunk/research/players/js/srs.publisher.js
@@ -35,9 +35,12 @@ function SrsPublisher(container, width, height, private_object) {
     
     // error code defines.
     this.errors = {
-        "100": "无法获取指定的摄像头", //error_camera_get 
-        "101": "无法获取指定的麦克风", //error_microphone_get 
-        "102": "摄像头为禁用状态，推流时请允许flash访问摄像头" //error_camera_muted 
+        "100": "无法获取指定的摄像头。", //error_camera_get 
+        "101": "无法获取指定的麦克风。", //error_microphone_get 
+        "102": "摄像头为禁用状态，推流时请允许flash访问摄像头。", //error_camera_muted 
+        "103": "服务器关闭了连接。", //error_connection_closed 
+        "104": "服务器连接失败。", //error_connection_failed 
+        "199": "未知错误。"
     };
 }
 /**
@@ -84,11 +87,17 @@ SrsPublisher.prototype.start = function() {
 * @param acodec an object contains the audio codec info.
 */
 SrsPublisher.prototype.publish = function(url, vcodec, acodec) {
-    this.url = url;
-    this.vcodec = vcodec;
-    this.acodec = acodec;
+    if (url) {
+        this.url = url;
+    }
+    if (vcodec) {
+        this.vcodec = vcodec;
+    }
+    if (acodec) {
+        this.acodec = acodec;
+    }
     
-    this.callbackObj.ref.__publish(url, this.width, this.height, vcodec, acodec);
+    this.callbackObj.ref.__publish(this.url, this.width, this.height, this.vcodec, this.acodec);
 }
 SrsPublisher.prototype.stop = function() {
     this.callbackObj.ref.__stop();
diff --git a/trunk/research/players/srs_chat.html b/trunk/research/players/srs_chat.html
index 06c6c9600..23de8b3f3 100755
--- a/trunk/research/players/srs_chat.html
+++ b/trunk/research/players/srs_chat.html
@@ -64,7 +64,7 @@
                 );
             };
             srs_publisher.on_publisher_error = function(code, desc) {
-                error(code, desc);
+                error(code, desc + "请重试。");
             };
             srs_publisher.on_publisher_warn = function(code, desc) {
                 warn(code, desc);
@@ -78,6 +78,7 @@
                 realtime_player = new SrsPlayer("realtime_player", 430, 185);
                 realtime_player.on_player_ready = function() {
                     this.set_bt(0.5);
+                    this.set_fs("screen", 100);
                 };
                 realtime_player.start();
             }
@@ -229,7 +230,6 @@
                     var _player = new SrsPlayer("rp_raw_" + chat.id, 600, 300, chat);
                     _player.on_player_ready = function() {
                         this.set_bt(0.5);
-                        this.play();
                         this.set_fs("screen", 100);
                     };
                     _player.start(chat.url);
@@ -254,7 +254,6 @@
                         return;
                     }
                     chat.player.play();
-                    chat.player.set_fs("screen", 100);
                 });
             }
             
@@ -419,14 +418,13 @@
                     
                     $("#btn_join").text("退出会议");
                 
-                    info("开始推流到服务器。请戴耳机聊天，否则音箱的声音会进入麦克风");
+                    info("开始推流到服务器。请戴耳机聊天，否则音箱的声音会进入麦克风造成回声。");
                     srs_publisher.publish(url, vcodec, acodec);
                 
                     if (realtime_player) {
                         // directly play the url for the realtime player.
                         realtime_player.stop();
                         realtime_player.play(url, 0);
-                        realtime_player.set_fs("screen", 100);
                     }
                 }
             });
@@ -513,7 +511,7 @@
                     <img src="img/tooltip.png"/>
                 </span>
             </div>
-            <div id="collapseM" class="accordion-body collapse in">
+            <div id="collapseM" class="accordion-body collapse">
                 <div class="accordion-inner">
                     <div class="row-fluid">
                         <div class="span2">
diff --git a/trunk/research/players/srs_publisher.html b/trunk/research/players/srs_publisher.html
index c48df777f..b587720f8 100755
--- a/trunk/research/players/srs_publisher.html
+++ b/trunk/research/players/srs_publisher.html
@@ -64,7 +64,7 @@
                 );
             };
             srs_publisher.on_publisher_error = function(code, desc) {
-                error(code, desc);
+                error(code, desc + "请重试。");
             };
             srs_publisher.on_publisher_warn = function(code, desc) {
                 warn(code, desc);
diff --git a/trunk/research/players/srs_publisher/release/srs_publisher.swf b/trunk/research/players/srs_publisher/release/srs_publisher.swf
index 600127ded..c4d2fd2fe 100755
Binary files a/trunk/research/players/srs_publisher/release/srs_publisher.swf and b/trunk/research/players/srs_publisher/release/srs_publisher.swf differ
diff --git a/trunk/research/players/srs_publisher/src/srs_publisher.as b/trunk/research/players/srs_publisher/src/srs_publisher.as
index 8d63004d3..3a4458e5f 100755
--- a/trunk/research/players/srs_publisher/src/srs_publisher.as
+++ b/trunk/research/players/srs_publisher/src/srs_publisher.as
@@ -48,6 +48,8 @@ package
         private const error_camera_get:int = 100;
         private const error_microphone_get:int = 101;
         private const error_camera_muted:int = 102;
+        private const error_connection_closed:int = 103;
+        private const error_connection_failed:int = 104;
         
         public function srs_publisher()
         {
@@ -181,6 +183,17 @@ package
                     }
                     contextMenu.customItems = customItems;
                 }
+
+                if (evt.info.code == "NetConnection.Connect.Closed") {
+                    js_call_stop();
+                    system_error(error_connection_closed, "server closed the connection");
+                    return;
+                }
+                if (evt.info.code == "NetConnection.Connect.Failed") {
+                    js_call_stop();
+                    system_error(error_connection_failed, "connect to server failed");
+                    return;
+                }
                 
                 // TODO: FIXME: failed event.
                 if (evt.info.code != "NetConnection.Connect.Success") {