FlashSocke 通过flash进行socket通信(as代码)

Posted 2020-09-22 Lzpong

    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+"\n");
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

View Code

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.