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  • websocket


      
    <!DOCTYPE html>
    <html lang="zh-CN">
      <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
        <title>socket测试</title>

        <!-- Bootstrap -->
        <link href="http://cdn.mark.ah.cn/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">

      </head>
      <body>
        <div class="container">
          <form>

            <div class="form-group">
              <label >请输入:</label>
              <input type="text" class="form-control" id="textInput" placeholder="请输入" maxlength="100">
            </div>

            <div class="form-group text-center">

              <button type="button" class="btn btn-info" id="sendBtn">发送</button>

              <button type="button" class="btn btn-warning"  id="clearBtn">清空记录</button>

              <button type="button" class="btn btn-success" id="mockBtn">模拟断开连接</button>

              <button type="button" class="btn btn-danger" id="closeBtn">完整关闭</button>

              <button type="button" class="btn btn-success" id="reConnectBtn">重连</button>

            </div>

            <div class="form-group">
              <label >服务端返回应答消息:</label>
              <div id="respondDiv">
                
              </div>
            </div>

          </form>
        </div>


        <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
        <script src="http://cdn.mark.ah.cn/jquery/1.11.3/jquery-1.11.3.min.js"></script>
        <!-- Include all compiled plugins (below), or include individual files as needed -->
        <script src="http://cdn.mark.ah.cn/bootstrap/3.0.3/js/bootstrap.min.js"></script>
      </body>

      <script type="text/javascript">
        //下划线表示是内部私有方法,推荐外部不进行调用
        $(function (){
          var OriocSocket = function(opt){
            var options = opt || {}
            if (!options.url) {
              options.url = 'ws://192.168.3.250:8263/ws';
            }
            this.options = options;

            //接收到消息的回调处理方法
            this.onMsg = options.onMsg
            //通道开启事件回调
            this.onSocketOpen = options.onSocketOpen
            //通道关闭事件回调
            this.onSocketClose = options.onSocketClose
            //登录回调
            this.onLogin = options.onLogin
            //掉线
            this.onDisconnect = options.onDisconnect

            //loginKey 是socket 通道的唯一识别标志,
            //后端通过这个标志向客户端发送消息
            this.loginKey = options.loginKey

            //初始化
            this.init = function (){
              if (!this._checkUsable()) {
                alert('您的浏览器不支持webSocket');
                return ;
              }
              //默认连接标志为false
              this.socketConnected = false;

              try {
                //初始化socket
                this._initSocket()
                //初始化socket相关事件
                var that = this
                this._initSocketEvents(function (){
                  //执行login方法
                  that._login(that.loginKey);
                  that.socketConnected = true;
                })
              } catch(e) {
                //初始化连接失败
                console.log('初始化连接失败');
                console.log(e);
                this.socketConnected = false;
                this.onDisconnect && this.onDisconnect()
              }
              //初始化心跳连接,在心跳的时候进行连接健康检查,
              //发现有问题直接进行重连
              this._initSocketHeartBeat();
            };

            //发送消息
            this.sendMsg = function (_content){
              if (!this.socketConnected) {
                throw Error('socket通道已关闭')
              }
              this._sendFormattedMsg(this.loginKey,'Publish',_content)
            };

            //主动关闭通道
            //主动关闭之后再次开启需要调用init
            this.close = function (){
              console.log('关闭通道');
              try {
                this.socket && this.socket.close()
              } catch (e) {}
              //清理socket实例
              this.socket = null;
              //清理心跳定时器
              var _interval = this.heartbeatInterval
              if (_interval) {
                try {
                  clearInterval(_interval)
                  console.log('心跳已关闭')
                } catch (e) {}
              } 
              this.socketConnected = false;
            };

            //模拟断开连接
            //未暂停心跳机制,10秒后会自动重连
            this.mockDisconnect = function (){
              try {
                this.socket.close()
              } catch (e) {}
              this.socketConnected = false;
            };

            //检查是否可用
            this._checkUsable = function (){
              if (!window.WebSocket) {
                window.WebSocket = window.MozWebSocket;
              }
              if (!window.WebSocket) {
                return false;
              }
              return true;
            };
            
            //初始化socket
            this._initSocket = function (){
              var url = this.options.url;
              this.socket = new WebSocket(url);
            };

            //初始化socket事件
            this._initSocketEvents = function (_openedCallback){
              var that = this
              //接收到消息
              that.socket.onmessage = function(event){
                if (!event.data) {
                  return ;
                }
                that.onMsg && that.onMsg(event.data); 
              }
              //通道开启
              that.socket.onopen = function (){
                console.log('socket 通道已开启');
                _openedCallback && _openedCallback()
                that.onSocketOpen && that.onSocketOpen()
              }

              //断开,暂时先自动重连
              that.socket.onclose = function (){
                that.onDisconnect && that.onDisconnect()
                that.onSocketClose && that.onSocketClose()
              }

              that.socket.onerror = function (err){
                console.log('socket 异常 ',err);
              }


            };

            //通道开启后执行登录方法
            this._login = function (){
              var that = this
              this._sendFormattedMsg(this.loginKey,'Login', new Date().getTime(),function (err){
                  if (err) {
                    console.log('登录失败');
                  }else{
                    that.onLogin && that.onLogin()
                  }
              })
            };

            //初始化socket心跳机制
            this._initSocketHeartBeat = function (){
              var _interval = this.heartbeatInterval
              if (_interval) {
                try {
                  clearInterval(_interval)
                } catch (e) {}
              } 

              _interval = null;
              //心跳10秒一次
              var that = this
              _interval = setInterval(function (){
                if (that.socket.readyState != that.socket.OPEN) {
                  //如果未连接,重新进行连接
                  //重连之后直接进行登录
                  that._reconnect();
                  //连接后重新发送心跳
                  that._sendBeatMsg();
                }else{
                  //连接后重新发送心跳
                  that._sendBeatMsg();
                }
                
              }, 1000*10)
              this.heartbeatInterval = _interval
            };

            //发送心跳数据
            this._sendBeatMsg = function (_callback){
              this._sendFormattedMsg(this.loginKey,'HeartBeat',
                new Date().getTime(),function (err){
                  console.log('242 ',err);
                  _callback && _callback(err)
              })
            };

            //断线重连
            this._reconnect = function (){
              try {
                this.socketConnected = false;
                //初始化socket
                this._initSocket()
                //初始化socket相关事件
                var that = this
                this._initSocketEvents(function (){
                  //执行login方法
                  that._login(that.loginKey);
                  that.socketConnected = true;
                })
              } catch(e) {
                //初始化连接失败
                console.log('断线重连失败',new Date());
                console.log(e);
                this.socketConnected = false;
              }
            };

            //发送格式化的数据
            this._sendFormattedMsg = function (_userKey,_msgType,_content,_callback){        
              try {
                this.socket.send(JSON.stringify({
                  type: _msgType,
                  userId: _userKey,
                  content: _content
                }));
                console.log('275 null')
                _callback && _callback()
              } catch (e) {
                console.log('sendFormattedMsg 消息发送失败',_userKey,_msgType,_content,new Date());
                console.log('278',e);
                _callback && _callback(e)
              }
              
            }
          };

          //挂载到window
          window.OriocSocket = OriocSocket;
        })

        $(function (){
          
          var socketInstance = new window.OriocSocket({
            url: '',
            //暂时面向整个救援web推送
            loginKey: 'RescureWeb',
            //收到消息
            onMsg: function (_content){
              $('#respondDiv').append($('<p>收到消息: ' + _content + '</p>'))
            },
            //通道开启
            onSocketOpen: function (){
              $('#respondDiv').append($('<p>通道开启</p>'))
            },
            //通道关闭
            onSocketClose: function (){
              $('#respondDiv').append($('<p>通道关闭</p>'))
            },
            onLogin: function (){
              $('#respondDiv').append($('<p>已登录</p>'))
            },
            onDisconnect: function (){
              $('#respondDiv').append($('<p>连接断开</p>'))
            }
          })

          socketInstance.init();

          //点击发送按钮
          $('#sendBtn').click(function (){
            var textInput = $('#textInput').val();
            if (!textInput || textInput.trim() == '') {
              return ;
            }
            socketInstance.sendMsg(textInput);
            $('#respondDiv').append($('<p></p>').text('发送:'+textInput));
            $('#textInput').val('');
          })

          //点击清理按钮
          $('#clearBtn').click(function (){
            $('#respondDiv').empty();
          })

          $('#mockBtn').click(function (){
            socketInstance.mockDisconnect();
            $('#respondDiv').append($('<p></p>').text('模拟断开连接'));
          })

          $('#closeBtn').click(function (){
            socketInstance.close();
            $('#respondDiv').append($('<p></p>').text('完整关闭'));
          })

          $('#reConnectBtn').click(function (){
            socketInstance.close();
            socketInstance.init();
            $('#respondDiv').append($('<p></p>').text('重连'));
          })

          
        })

      </script>
    </html>
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  • 原文地址:https://www.cnblogs.com/bm20131123/p/12836337.html
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