在早期的项目中, 因为需要用IE上连接socket进行通信, 所以不得不借助于flash的socket功能,于是有了下面这个`FlashSocke`,供JavaScript调用 和 回调JavaScript.
code:
1 package 2 { 3 import flash.external.*; 4 import flash.display.Sprite; 5 //import flash.external.ExternalInterface; 6 import flash.events.*; 7 import flash.net.Socket; 8 import flash.system.*; 9 import flash.utils.Timer; 10 11 //============================================================================== 12 public class Main extends Sprite 13 { 14 static var socket:Socket = null; 15 static var bConnecting:Boolean = false; 16 static var charSet:String; 17 static var Obj:String; 18 static var ReConNum:Number=0; 19 //var str:String; 20 21 public function Main() 22 { 23 //添加JS调用的函数的接口。 24 ExternalInterface.addCallback("Connect",Connect); 25 ExternalInterface.addCallback("SendMsg",SendMsg); 26 ExternalInterface.addCallback("Close",Close); 27 ExternalInterface.addCallback("GetState",GetState); 28 } 29 //事件回调,当连接更改时 30 public function OnConnect(evt:Event=null):void 31 { 32 if(socket.connected) 33 bConnecting=false; 34 Debug(evt.toString()); 35 ExternalInterface.call(Obj+"OnConnect",socket.connected); 36 } 37 //事件回调,被动关闭才会触发 38 public function OnClose(evt:Event):void 39 { 40 Debug(evt.toString()); 41 bConnecting=false; 42 ExternalInterface.call(Obj+"OnClose"); 43 } 44 45 /*===============Flax事件回调函数==============================================*/ 46 47 //事件回调,出错回调 48 public function errorHandler(evt:ErrorEvent):void 49 { 50 OnError(evt.errorID,evt.toString()); 51 } 52 //事件回调,接收回调 53 public function ReciveHandler(evt:ProgressEvent):void 54 { 55 try 56 { 57 //OnMsg( socket.readUTFBytes(socket.bytesAvailable) );//UTF 58 //OnMsg( socket.readUTF());//Error #2030 59 //str=socket.readMultiByte(socket.bytesAvailable,charSet); 60 //Debug(str); 61 //ExternalInterface.call(Obj+"OnMsg",str.replace(new RegExp("\", 'g'),"\\")); 62 ExternalInterface.call(Obj+"OnMsg",socket.readMultiByte(socket.bytesAvailable,charSet).replace(/\/g,"\\")); 63 //OnMsg(socket.readMultiByte(socket.bytesAvailable,charSet)); 64 } 65 catch (err:Error) 66 { 67 OnError(err.errorID,"接收数据时发生错误："+err.toString()); 68 } 69 } 70 71 /*===============Flax调用JS函数==============================================*/ 72 73 //调用JS函数OnError,出错回调 74 public function OnError(code:int,msg:String):int 75 { 76 ExternalInterface.call(Obj+"OnError",code,msg); 77 return code; 78 } 79 //调用JS函数Logs,显示日志信息 80 public function Debug(str:String):void 81 { 82 ExternalInterface.call(Obj+"Logs","[Flash]"+str); 83 } 84 85 /*===============JS调用Flax函数==============================================*/ 86 87 //通过JS调用Connect，初始化Socket,并连接 88 public function Connect(ip:String, port:int, obj:String="", charset:String="GBK", pf:String="") 89 { 90 //trace("Connect..."); 91 try 92 { 93 if (socket && socket.connected) 94 { 95 ExternalInterface.call(Obj+"OnMsg","{}"); 96 return Debug("已连接"),1; 97 } 98 if(bConnecting&&ReConNum<10)//连接次数小于10 99 { 100 ReConNum++; 101 return Debug("连接中... Connecting... Wait Please."),1; 102 } 103 ReConNum=0; 104 if (ip == "" || port == 0) 105 return OnError(-99,"不正确的IP或端口参数"),0; 106 107 charSet=charset; 108 if(obj!="") 109 Obj=obj+".";//JS对象名; 这样可以调用JS对象的函数 110 111 Debug("Ver:2015-1120-1720"); 112 Debug("Connect("+ip+", "+port+")"); 113 114 try{ 115 if(socket!=null) 116 socket.close(); 117 }catch (error1:Error){} 118 119 bConnecting=true; 120 121 socket = new Socket ; 122 socket.timeout = 10000;//超时事件会被捕获为securityError事件,不知道为啥 123 socket.addEventListener(Event.CONNECT,OnConnect);//连接状态变化时,经常不执行;用定时器检查去了 124 socket.addEventListener(Event.CLOSE,OnClose); 125 socket.addEventListener(ErrorEvent.ERROR,errorHandler); 126 socket.addEventListener(IOErrorEvent.IO_ERROR,errorHandler); 127 socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR,errorHandler); 128 socket.addEventListener(ProgressEvent.SOCKET_DATA,ReciveHandler,false,0,true); 129 130 //"http://" + serverIP + ":" + webport + "/crossdomain.xml"; 131 //Security.allowDomain("*"); 132 if (pf != "") 133 Security.loadPolicyFile(pf); 134 135 socket.connect(ip,port);//连接是异步的 136 return 1; 137 } 138 catch (err:Error) 139 { 140 bConnecting=false; 141 socket.close(); 142 return OnError(err.errorID,"连接时发生错误："+err.toString()),0; 143 } 144 } 145 146 //JS调用Close，关闭Socket 147 public function Close() 148 {//trace("Close................."); 149 try 150 { 151 socket.close(); 152 } 153 catch (err:Error) 154 { 155 OnError(err.errorID,"关闭Socket时发生错误："+err.toString()); 156 } 157 bConnecting=false; 158 } 159 //JS调用GetState，返回Socket连接状态 160 public function GetState():Boolean 161 { 162 try 163 { 164 if(socket!=null) 165 return socket.connected; 166 else 167 return false; 168 } 169 catch(err:Error) 170 { 171 OnError(err.errorID,"GetState发生错误："+err.toString()); 172 } 173 return false; 174 } 175 //JS调用Send，发送数据,返回发送的数据的长度 176 public function SendMsg(msg:String):int 177 { 178 var len:int = 0; 179 if (socket && socket.connected) 180 { 181 try 182 { 183 //var ba:ByteArray = new ByteArray ; 184 //ba.writeUTFBytes(msg); 185 //socket.writeBytes(ba); 186 socket.writeMultiByte(msg,charSet); 187 //socket.writeUTF(msg+" "); 188 socket.flush(); 189 //sleep(50); 190 len = msg.length; 191 Debug("SendMsgLen:"+len); 192 } 193 catch (err:Error) 194 { 195 len = err.errorID; 196 OnError(err.errorID,"发送数据时发生错误："+err.toString()); 197 } 198 } 199 else 200 { 201 len = -96; 202 OnError(-96,"未连接或已断开,需要重新连接/登陆."); 203 } 204 return len; 205 } 206 207 }//End class Main 208 209 }//end package
当然,后来 浏览器们都纷纷更新,支持H5, 就是用WebSocket了, 于是不再是用这个破旧的东西了, 毕竟是插件嘛, 稳定性啥的,,,,(ps:flash会经常崩溃呀)
调用说明:
[FlashSocket:提供的函数接口] //通过JS调用Connect，初始化Socket，并连接 //obj:设置函数的回调前缀(对象名,如:"fsObj"),使能回调象的函数(如"fsObj.OnMsg") //charset:设置往来消息的字符编码,默认编码"GBK" //pf:设置Security.loadPolicyFile 的地址 Connect(ip:String, port:int, obj:String="", charset:String="GBK", pf:String=""):void //通过JS调用SendMsg，发送数据,返回发送的数据的长度 SendMsg(msg:String):int //通过JS调用Close，关闭Socket Close():void //通过JS调用GetState，返回Socket连接状态。 GetState():Boolean //通过JS调用GetServerIP，返回服务器IP地址 GetServerIP():String //通过JS调用GetServerPort，返回服务器端口 GetServerPort():int [JavaScript:提供的回调函数接口] OnConnect(bool) OnClose() OnError(code,msg) OnMsg(msgstr) Logs(logstr)
那啥,编译成 `.swf` 就可以使用了.
要注意异步.