diff --git a/trunk/research/players/srs_chat.html b/trunk/research/players/srs_chat.html
index fc4c9f450..c89c2585d 100644
--- a/trunk/research/players/srs_chat.html
+++ b/trunk/research/players/srs_chat.html
@@ -35,215 +35,13 @@
 </div>
 <div class="container">
     <!-- for the log -->
-    <div class="alert alert-info fade in" id="txt_log">
+    <div class="alert alert-danger fade in" id="txt_log">
         <button type="button" class="close" data-dismiss="alert">×</button>
-        <strong><span id="txt_log_title">Usage:</span></strong>
-        <span id="txt_log_msg">输入名字，设点“加入会议”按钮</span>
-    </div>
-    
-    <div class="control-group">
-        <div class="form-inline">
-            <button class="btn input-small" id="btn_video_settings">摄像头</button>
-            <button class="btn input-small" id="btn_audio_settings">麦克风</button>
-            <input type="text" id="txt_name" class="input-large" placeholder="请输入您的名字..." value=""></input>
-            <button class="btn input-small" id="btn_join">加入会议</button>
-            <input type="text" id="txt_url" class="input-mini hide" value=""></input>
-        </div>
-    </div>
-    <table id="lst_chats" class="table">
-        <tr>
-            <td id="td_0">
-                <div class="accordion-group">
-                    <div class="accordion-heading">
-                        <span class="accordion-toggle">
-                            <strong>[我的] 本地摄像头</strong>
-                        </span>
-                    </div>
-                    <div class="accordion-body collapse in">
-                        <div class="accordion-inner">
-                            <div id="local_publisher"></div>
-                        </div>
-                    </div>
-                </div>
-            </td>
-            <td id="td_1">
-                <div class="accordion-group">
-                    <div class="accordion-heading">
-                        <span class="accordion-toggle">
-                            <strong>[我的] 远程服务器流</strong>
-                            <a id="realtime_player_url" href="#" data-toggle="tooltip" data-placement="top" title="">
-                                播放地址<img src="img/tooltip.png"/>
-                            </a>
-                        </span>
-                    </div>
-                    <div class="accordion-body collapse in">
-                        <div class="accordion-inner">
-                            <div id="realtime_player"></div>
-                        </div>
-                    </div>
-                </div>
-            </td>
-            <td id="td_2"></td>
-        </tr>
-    </table>
-    <div class="container hide" id="template">
-        <div class="accordion-group" id="collapse_main">
-            <div class="accordion-heading" title="点击展开或收起，收起后停止播放流，展开时从服务器请求流">
-                <span id="headerN" class="accordion-toggle" data-toggle="collapse" href="#collapseN">
-                    <strong>[<a href="#"><span id="user_name">XX</span></a>]</strong>
-                    <strong>加入时间</strong>[<span id="join_date"></span>]
-                    <a id="user_player_url" href="#" data-toggle="tooltip" data-placement="top" title="">
-                        播放地址<img src="img/tooltip.png"/>
-                    </a>
-                </span>
-            </div>
-            <div id="collapseM" class="accordion-body collapse in">
-                <div class="accordion-inner">
-                    <div id="chat_player">
-                        <div id="chat_player_raw">
-                        </div>
-                    </div>
-                </div>
-            </div>
-        </div>
-    </div>
-    <table class="table">
-    </table>
-    <div id="video_modal" class="modal hide fade">
-        <div class="modal-header">
-            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
-            <h3>视频编码</h3>
-        </div>
-        <div class="modal-body">
-            <div class="form-horizontal">
-                <div class="control-group">
-                    <label class="control-label" for="sl_cameras">
-                        摄像头
-                        <a id="sl_cameras_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span4" id="sl_cameras"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_vcodec">
-                        Codec
-                        <a id="sl_cameras_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_vcodec"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_profile">
-                        Profile
-                        <a id="sl_profile_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_profile"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_level">
-                        Level
-                        <a id="sl_level_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_level"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_gop">
-                        GOP
-                        <a id="sl_gop_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_gop"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_size">
-                        尺寸
-                        <a id="sl_size_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_size"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_fps">
-                        帧率
-                        <a id="sl_fps_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_fps"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_bitrate">
-                        码率
-                        <a id="sl_bitrate_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_bitrate"></select>
-                    </div>
-                </div>
-            </div>
-        </div>
-        <div class="modal-footer">
-            <button class="btn btn-primary" data-dismiss="modal" aria-hidden="true">设置</button>
-        </div>
-    </div>
-    <div id="audio_modal" class="modal hide fade">
-        <div class="modal-header">
-            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
-            <h3>音频编码</h3>
-        </div>
-        <div class="modal-body">
-            <div class="form-horizontal">
-                <div class="control-group">
-                    <label class="control-label" for="sl_microphones">
-                        麦克风
-                        <a id="worker_id_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span4" id="sl_microphones"></select>
-                    </div>
-                </div>
-                <div class="control-group">
-                    <label class="control-label" for="sl_acodec">
-                        编码
-                        <a id="sl_acodec_tips" href="#" data-toggle="tooltip" data-placement="right" title="">
-                            <img src="img/tooltip.png"/>
-                        </a>
-                    </label>
-                    <div class="controls">
-                        <select class="span2" id="sl_acodec"></select>
-                    </div>
-                </div>
-            </div>
-        </div>
-        <div class="modal-footer">
-            <button class="btn btn-primary" data-dismiss="modal" aria-hidden="true">设置</button>
-        </div>
+        <strong><span id="txt_log_title">Warning:</span></strong>
+        <span id="txt_log_msg">
+            SRS不支持实时聊天，请使用<a href="https://webrtc.org/" target="_blank">WebRTC</a>，
+            SRS会在未来考虑支持(<a href="https://github.com/ossrs/srs/issues/307" target="_blank">#307</a>)。
+        </span>
     </div>
     <hr/>
     <footer>
@@ -253,539 +51,5 @@
 </body>
 <script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
 <script type="text/javascript" src="js/bootstrap.min.js"></script>
-<script type="text/javascript" src="js/swfobject.js"></script>
-<script type="text/javascript" src="js/json2.js"></script>
-<script type="text/javascript" src="js/srs.page.js"></script>
-<script type="text/javascript" src="js/srs.log.js"></script>
-<script type="text/javascript" src="js/srs.player.js"></script>
-<script type="text/javascript" src="js/srs.publisher.js"></script>
-<script type="text/javascript" src="js/srs.utility.js"></script>
-<script type="text/javascript" src="js/winlin.utility.js"></script>
-<script type="text/javascript">
-    var srs_publisher = null;
-    var realtime_player = null;
-    var api_server = null;
-    var self_chat = null;
-    var global_chat_user_id = 200;
-    var previous_chats = [];
-    var no_play = false;
-
-    var query = parse_query_string();
-    $(function(){
-        // get the vhost and port to set the default url.
-        // for example: http://192.168.1.213/players/jwplayer6.html?port=1935&vhost=demo
-        // url set to: rtmp://demo:1935/live/livestream
-        srs_init_publish("#txt_url");
-
-        // support 5x3+1 users
-        for (var i = 0; i < 5; i++) {
-            var tr = $("<tr></tr>").hide();
-            $("#lst_chats").append(tr);
-
-            for (var j = 0; j < 3; j++) {
-                tr.append($("<td></td>").attr("id", "td_" + ((i+1) * 8 + j)));
-            }
-        }
-        // remove border of row.
-        $("#lst_chats").find("td").css("border", "none").css("padding", "2px")
-                .css("padding-left", "0px").css("width", "327px");
-
-        if (query.agent == "true") {
-            document.write(navigator.userAgent);
-            return;
-        }
-
-        $("#realtime_player_url").tooltip({
-            title: "右键复制RTMP地址"
-        });
-
-        // if no play specified, donot show the player, for debug the publisher.
-        if (query.no_play == "true") {
-            no_play = true;
-        }
-
-        $("#btn_video_settings").click(function(){
-            $("#video_modal").modal({show:true});
-        });
-        $("#btn_audio_settings").click(function(){
-            $("#audio_modal").modal({show:true});
-        });
-        $("#btn_join").click(on_user_publish);
-
-        // for publish, we use randome stream name.
-        $("#txt_url").val($("#txt_url").val() + "." + new Date().getTime());
-
-        // start the publisher.
-        srs_publisher = new SrsPublisher("local_publisher", 280, 180);
-        srs_publisher.on_publisher_ready = function(cameras, microphones) {
-            srs_chat_initialize_page(
-                    cameras, microphones,
-                    "#sl_cameras", "#sl_microphones",
-                    "#sl_vcodec", "#sl_profile", "#sl_level", "#sl_gop", "#sl_size",
-                    "#sl_fps", "#sl_bitrate",
-                    "#sl_acodec"
-            );
-        };
-        srs_publisher.on_publisher_error = function(code, desc) {
-            if (!on_publish_stop()) {
-                return;
-            }
-
-            error(code, desc + "请重试。");
-        };
-        srs_publisher.on_publisher_warn = function(code, desc) {
-            warn(code, desc);
-        };
-        srs_publisher.start();
-
-        update_play_url();
-
-        if (!no_play) {
-            // start the realtime player.
-            realtime_player = new SrsPlayer("realtime_player", 280, 180);
-            realtime_player.on_player_ready = function() {
-                this.set_bt(0.5);
-            };
-            realtime_player.on_player_metadata = function(metadata) {
-                this.set_dar(0, 0);
-                this.set_fs("screen", 100);
-
-                info("推流到服务器成功。请戴耳机聊天，否则音箱的声音会进入麦克风造成回声。");
-            }
-            realtime_player.start();
-        }
-
-        $("#txt_name").focus();
-
-        api_server = "http://" + query.hostname + ":" + srs_get_api_server_port() + "/api/v1/chats";
-        refresh();
-    });
-
-    function on_publish_stop() {
-        if (!srs_can_republish()) {
-            $("#btn_join").attr("disabled", true);
-            error(0, "您使用的浏览器很弱，请关闭页面后重新打开页面（刷新也不管用）。<br/>推荐使用Chrome/Firefox/Safari/Opera浏览器，支持重试");
-
-            srs_log_disabled = true;
-            return false;
-        }
-
-        return true;
-    }
-
-    function update_play_url() {
-        var url = $("#txt_url").val();
-
-        $("#realtime_player_url").attr("href", url).attr("target", "_blank");
-    }
-
-    function refresh() {
-        if (!self_chat) {
-            setTimeout(refresh, 1000);
-            return;
-        }
-
-        $.ajax({
-            type       : "GET",
-            async      : true,
-            url        : api_server,
-            contentType: "text/html",
-            data       : "",
-            dataType   : "json",
-            complete   : function() {
-            },
-            error      : function(ret) {
-                setTimeout(refresh, 5000);
-                warn(101, "查询会议室失败：" + JSON.stringify(ret));
-            },
-            success    : function(ret) {
-                if(0 != ret["code"]) {
-                    warn(102, "查询会议室失败: " + JSON.stringify(ret));
-                    setTimeout(refresh, 5000);
-                    return;
-                }
-
-                var chats = ret["data"]["chats"];
-                var server_time = ret["now"];
-
-                on_get_chats(chats);
-                setTimeout(refresh, 5000);
-            }
-        });
-    }
-    function on_get_chats(chats) {
-        if (!self_chat) {
-            return;
-        }
-
-        // get self, check self is valid?
-        var _self_chat = null;
-        for (var i = 0; i < chats.length; i++) {
-            var chat = chats[i];
-            if (self_chat && self_chat.id == chat.id) {
-                _self_chat = chat;
-                break;
-            }
-        }
-        // rejoin if invalid.
-        if (!_self_chat) {
-            on_user_exit_chat(function(){
-                on_user_join_chat(function(){
-                    info("重新加入会议室成功");
-                });
-            });
-            return;
-        }
-
-        render_chat_room(chats);
-
-        if (!self_chat) {
-            return;
-        }
-
-        // update self heartbeat.
-        var url = api_server + "/" + self_chat.id;
-
-        var chat = {};
-        chat.localtime = new Date().getTime();
-
-        // publish to api server to requires an id.
-        $.ajax({
-            type       : "PUT",
-            async      : true,
-            url        : url,
-            contentType: "text/html",
-            data       : JSON.stringify(chat),
-            dataType   : "json",
-            complete   : function() {
-            },
-            error      : function(ret) {
-                warn(105, "更新会议室信息失败：" + JSON.stringify(ret));
-            },
-            success    : function(ret) {
-                if(0 != ret["code"]) {
-                    warn(106, "更新会议室信息失败：: " + JSON.stringify(ret));
-                    return;
-                }
-            }
-        });
-    }
-    function render_chat_room(original_chats) {
-        if (!self_chat) {
-            return;
-        }
-
-        var chats = [];
-        for (var i = 0; i < original_chats.length; i++) {
-            var chat = original_chats[i];
-
-            // ignore the self.
-            if (self_chat && self_chat.id == chat.id) {
-                continue;
-            }
-
-            chats.push(chat);
-        }
-
-        // new added chat
-        for (var i = 0; i < chats.length; i++) {
-            var chat = chats[i];
-
-            // if previous exists, ignore, only add new here.
-            var previous_chat = get_previous_chat_user(previous_chats, chat.id);
-            if (previous_chat) {
-                // update reference.
-                chat.ui = previous_chat.ui;
-                chat.parent = previous_chat.parent;
-                chat.player = previous_chat.player;
-                if (chat.player) {
-                    chat.player.private_object = chat;
-                }
-                continue;
-            }
-        }
-
-        // removed chat
-        for (var i = 0; i < previous_chats.length; i++) {
-            var chat = previous_chats[i];
-
-            var new_chat = get_previous_chat_user(chats, chat.id);
-            if (new_chat) {
-                continue;
-            }
-
-            if (chat.player) {
-                chat.player.stop();
-            }
-            $("#div_" + chat.id).remove();
-        }
-
-        // hide empty rows.
-        $("#lst_chats").find("tr").each(function(){
-            var empty = true;
-
-            $(this).find("td").each(function(){
-                if ($(this).html() != "") {
-                    empty = false;
-                    return false; // abort each
-                }
-                return true;
-            });
-
-            if (empty) {
-                $(this).hide();
-            }
-        });
-
-        // render the chat
-        for (var i = 0; i < chats.length; i++) {
-            var chat = chats[i];
-
-            // if redered, ignore.
-            if (chat.parent) {
-                continue;
-            }
-
-            // generate the ui of chat
-            if (!chat.ui) {
-                global_chat_user_id++;
-
-                // username: a str indicates the user name.
-                // url: a str indicates the url of user stream.
-                // join_date: a str indicates the join timestamp in seconds.
-                // join_date_str: friendly formated time.
-                var obj = $("<div/>").html($("#template").html());
-                if (true) {
-                    // save current ui object to the chat.
-                    chat.ui = obj;
-
-                    $(obj).attr("chat_id", chat.id);
-                    $(obj).attr("id", "div_" + chat.id); // for specifed chat: $("#div_" + chat_id)
-                    $(obj).attr("class", "div_chat"); // for all chats: $(".div_chat")
-                    $(obj).find("#chat_player").attr("id", "rp_" + chat.id); // for specifed player: $("#rp_" + chat_id)
-                    $(obj).find("#chat_player_raw").attr("id", "rp_raw_" + chat.id); // for specifed player: $("#rp_raw_" + chat_id)
-                    $(obj).find("#user_name").text(chat.username);
-                    $(obj).find("#user_player_url").attr("href", chat.url);
-                    $(obj).find("#join_date").text(chat.join_date_str.split(" ")[1]);
-                    $(obj).find("#collapseM").attr("id", "collapse_" + global_chat_user_id);
-                    $(obj).find("#headerN").attr("href", "#collapse_" + global_chat_user_id);
-                }
-            }
-
-            // find a idle td to render the chat.
-            var parent = null;
-            $("#lst_chats").find("td").each(function(){
-                if ($(this).html() != "") {
-                    return true;
-                }
-
-                parent = $(this);
-                return false; // abort each
-            });
-
-            if (!parent) {
-                warn("没有可用的位置展示流。");
-                break;
-            }
-            $(parent).append(chat.ui);
-            $(parent).parent().show();
-
-            // when ui elements appent to the page,
-            // create the player, or flash will failed.
-            if (!chat.parent) {
-                chat.parent = $(parent);
-
-                if (!no_play) {
-                    // start the realtime player.
-                    var _player = new SrsPlayer("rp_raw_" + chat.id, 240, 180, chat);
-                    _player.on_player_ready = function() {
-                        this.set_bt(0.5);
-                        this.play();
-                    };
-                    _player.on_player_metadata = function(metadata) {
-                        this.set_dar(0, 0);
-                        this.set_fs("screen", 100);
-                    }
-                    _player.start(chat.url);
-
-                    chat.player = _player;
-                } else {
-                    chat.player = null;
-                }
-
-                $(obj).find("#collapse_main").on('hidden', function(){
-                    var id = $(this).parent().attr("chat_id");
-                    var chat = get_previous_chat_user(previous_chats, id);
-                    if (!chat || !chat.player) {
-                        return;
-                    }
-                    chat.player.stop();
-                });
-                $(obj).find("#collapse_main").on('shown', function(){
-                    var id = $(this).parent().attr("chat_id");
-                    var chat = get_previous_chat_user(previous_chats, id);
-                    if (!chat || !chat.player) {
-                        return;
-                    }
-                    chat.player.play();
-                });
-            }
-        }
-
-        previous_chats = chats;
-    }
-    function get_previous_chat_user(arr, id) {
-        for (var i = 0; i < arr.length; i++) {
-            var chat = arr[i];
-            if (id == chat.id) {
-                return chat;
-            }
-        }
-        return null;
-    }
-
-    function on_user_publish() {
-        if ($("#txt_name").val() == "") {
-            $("#txt_name").focus().parent().parent().addClass("error");
-            warn(100, "请输入您的名字");
-            return;
-        }
-
-        $("#txt_name").parent().parent().removeClass("error");
-
-        // join chat.
-        if (!self_chat) {
-            on_user_join_chat();
-        } else {
-            on_user_exit_chat();
-        }
-    }
-    function on_user_exit_chat(complete_pfn) {
-        srs_publisher.stop();
-        $("#btn_join").text("加入会议");
-
-        if (realtime_player) {
-            realtime_player.stop();
-        }
-
-        if (!self_chat) {
-            return;
-        }
-
-        // removed chat
-        for (var i = 0; i < previous_chats.length; i++) {
-            var chat = previous_chats[i];
-
-            if (chat.player) {
-                chat.player.stop();
-            }
-            $("#div_" + chat.id).remove();
-        }
-        previous_chats = [];
-
-        var url = api_server + "/" + self_chat.id;
-        // whatever, cleanup local chat.
-        self_chat = null;
-
-        $("#btn_join").attr("disabled", true);
-
-        // publish to api server to requires an id.
-        $.ajax({
-            type       : "DELETE",
-            async      : true,
-            url        : url,
-            contentType: "text/html",
-            data       : "",
-            dataType   : "json",
-            complete   : function() {
-                if (!on_publish_stop()) {
-                    return;
-                }
-
-                $("#btn_join").attr("disabled", false);
-                if (complete_pfn) {
-                    complete_pfn();
-                }
-            },
-            error      : function(ret) {
-                warn(103, "退出会议室失败");
-            },
-            success    : function(ret) {
-                if(0 != ret["code"]) {
-                    warn(104, "退出会议室失败");
-                    return;
-                }
-                info("退出会议室成功");
-            }
-        });
-    }
-    function on_user_join_chat(complete_pfn) {
-        if (self_chat) {
-            return;
-        }
-
-        var url = $("#txt_url").val();
-        var vcodec = {};
-        var acodec = {};
-        srs_publiser_get_codec(
-                vcodec, acodec,
-                "#sl_cameras", "#sl_microphones",
-                "#sl_vcodec", "#sl_profile", "#sl_level", "#sl_gop", "#sl_size",
-                "#sl_fps", "#sl_bitrate",
-                "#sl_acodec"
-        );
-
-        var chat = {};
-        chat.id = -1;
-        chat.username = $("#txt_name").val();
-        chat.agent = navigator.userAgent;
-        chat.url = url;
-        chat.vcodec = vcodec;
-        chat.acodec = acodec;
-
-        $("#btn_join").attr("disabled", true);
-
-        // publish to api server to requires an id.
-        $.ajax({
-            type       : "POST",
-            async      : true,
-            url        : api_server,
-            contentType: "text/html",
-            data       : JSON.stringify(chat),
-            dataType   : "json",
-            complete   : function() {
-                $("#btn_join").attr("disabled", false);
-                if (complete_pfn) {
-                    complete_pfn();
-                }
-            },
-            error      : function(ret) {
-                warn(105, "创建会议室失败：" + JSON.stringify(ret));
-            },
-            success    : function(ret) {
-                if(0 != ret["code"]) {
-                    warn(106, "创建会议室失败: " + JSON.stringify(ret));
-                    return;
-                }
-
-                chat.id = ret["data"];
-
-                // success, start publish.
-                self_chat = chat;
-
-                $("#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);
-                }
-            }
-        });
-    }
-</script>
 </html>