第33篇学生建房间连老师总结及IOS-WebRTC BUG处理（一）及php打开文件

关键词：学生建房间连老师总结,IOS-WebRTC BUG处理,php打开文件

一、学生建房间连老师总结

昨天之所以成功，是因为我最后的方法是正确的，以后也应该这样。要切换连接，把与连接无关的代码全删除了，之后，代码一换就Ok了。

1.1 老师端连接代码如下：

connection.onUserStatusChanged =function(event) {

  

   if (event.status == 'online' && event.userid != roomid) {

       $("#studentStatues").removeClass("studentOffline");

       $("#studentStatues").addClass("studentOnline");

       $("#studentStatues").html("学生已连接");

    }

   if (event.status == 'offline' && event.userid != roomid) {

       $("#studentStatues").removeClass("studentOnline");

       $("#studentStatues").addClass("studentOffline");

       $("#studentStatues").html("学生已断开连接");

        if (!studentOffLine &&!selfOffLine) {

           MyAlert("<p>学生意外断线，您可以等待学生再次链接，也可以强制结束课堂</p>", "false", "", "","auto", "auto", 1, 2, {

           text: "强制结束课堂",

           callback: closeClass

           },{

           text: "我知道了"

           });

       }

    }

 

};

 

connection.onmessage = appendDIV;

connection.onopen = function() {

   document.getElementById('input-text-chat').disabled = false;

   document.getElementById('start_anwser').style.display = "";

   document.getElementById('give_up').style.display = "";

  

   if (connection.getAllParticipants().join(', ') == connection.sessionid){

       var start_anwserBtn = document.getElementById("start_anwser");

       start_anwserBtn.style.display = "none";

    }

 

   if (designer.pointsLength <= 0) {

       // make sure that remote user gets all drawings synced.

       setTimeout(function() {

           connection.send('plz-sync-points');

       }, 1000);

    }

 

};

//......................................................

// ......................HandlingRoom-ID................

//......................................................

function showRoomURL(roomid) { //roomid=123

 

}

(function() {

   var params = {},

       r = /([^&=]+)=?([^&]*)/g;

 

   function d(s) {

        return decodeURIComponent(s.replace(/\+/g,' '));

    }

   var match, search = window.location.search;

   while (match = r.exec(search.substring(1)))

       params[d(match[1])] = d(match[2]);

   window.params = params;

})();

var roomid = params.roomid;

if (roomid && roomid.length) {

   connection.open(roomid, function() {

       showRoomURL(connection.sessionid);

   });

}

1.2学生端连接代码如下：

connection.onUserStatusChanged =function(event) {

 

 

   if(event.status == 'offline' && event.userid == hashString) {

       tOffLine = true;

    }

 

};

 

connection.onmessage = appendDIV;

 

connection.onopen = function() {

 

   document.getElementById('input-text-chat').disabled = false;

   MyAlert("<p class='ready'>课堂已连接</p>",1000, "", "", "auto", "auto", 1);

 

   if (designer.pointsLength <= 0) {

       // make sure that remote user gets all drawings synced.

       setTimeout(function() {

           connection.send('plz-sync-points');

       }, 1000);

    }

   // mfu end

};

// ......................................................

// ......................HandlingRoom-ID................

//......................................................

 

(function() {

   var params = {},

       r = /([^&=]+)=?([^&]*)/g;

 

   function d(s) {

       return decodeURIComponent(s.replace(/\+/g, ' '));

    }

   var match, search = window.location.search;

   while (match = r.exec(search.substring(1)))

       params[d(match[1])] = d(match[2]);

   window.params = params;

})();

 

var hashString = location.hash.replace('#','');

 

if (hashString.length) {

   (function reCheckRoomPresence() {

       connection.checkPresence(hashString, function(isRoomExists) {

           if (isRoomExists && params.t) {

                connection.join(hashString);

                var t = Math.abs(params.t);

                if (t <= 1000) {

                   setTimeout("noticeBalanceLow()", 60000 * (t - 3));

                   setTimeout("closeConnection()", 60000 * t);

                }

                return;

            }

           //MyAlert("等待老师连接……","false","","","300","200",3);

           setTimeout(reCheckRoomPresence, 1000);

       });

   })();

}

注：把1.1与1.2的代码一调换，身份就变过来了。我是把所有无关代码全干掉后，才看出来的，以后，也要这样做，尤其是对陌生代码。

二、IOS 端BUG处理

2.1 学生端发不了消息

   修改代码如下：

注：加了一句：document.getElementById('input-text-chat').disabled = false;

 经过测试，学生端可以输入字了，但身份还是老师，哪个地方还是有问题。

2.2 学生端输出身份不对

   改过来了，原来学生端和老师端，都有一个控制身份的，都要改一下；之前，只改了一端。

三php

3.1 PHP 打开文件

fopen() 函数用于在 PHP中打开文件。此函数的第一个参数含有要打开的文件的名称，第二个参数规定了使用哪种模式来打开文件，看个例子：

2016年12月16日星期五