websocket 断线重连解决方案

websocket是HTML5下一个不错的网络协议解决方案，有一个场景很多猿猿都会遇到，手机锁屏后大约60秒，IOS会自动断开websocket连接，连接丢失了，那我们的数据也就断了。websocket 断线重连方案如下：

ReconnectingWebSocket
reconnecting websocket是一个javascript封闭的websocket库，非常小，压缩后仅有3KB。它的功能是当websocket断线后自动帮你重连。使用方法很简单：

只要把
[js]
var ws = new WebSocket('ws://....');
[/js]
替换成
[js]
var ws = new ReconnectingWebSocket('ws://....');
[/js]
就行了，当websocket断开着它会帮你自动重连，socket永不断线！

它支持事件
[js]
onopen
onmessage
onmessage
onmessage
onclose // At this point the WebSocket instance is dead.
[/js]

websocket 断线重连原理实现

常见websocket连接
[js]
var ws = new WebSocket('ws:../../websocket');
ws.onmessage = function(msg){
console.log('msg:',msg);
//do something
};
ws.onclose = function(){
console.log('closed....');
};
[/js]

实现websocket断线重连
[js]
var ws = new WebSocket('ws:../../websocket');
ws.onmessage = function(msg){
console.log('msg:',msg);
//do something
};
//把刚才干的事情重写一遍
function reconnect (){
rews = new WebSocket('ws:../../websocket');
rews.onmessage = function(){
//dosomthing
};
rews.onclose = function(){
//dosomthing
};
}
//每隔5秒去调用一次
var disConnect = function(){
setTimeout(function(){
reconnect();
},5000);
}
//函数放在onclose里
ws.onclose = disConnect;
[/js]