轉(zhuǎn)自http://www.javaeye.com/topic/401041
學(xué)erlang有一段時(shí)間了，現(xiàn)在在維護(hù)一套webim系統(tǒng)
并打算擴(kuò)展成 webgame 的服務(wù)程序
在沒有使用包協(xié)議的時(shí)候，遇到好多粘包問題，實(shí)在惱火
查閱了相關(guān)資料：
Flash Socket 的 writeUTF() 會(huì)自動(dòng)增加包頭長(zhǎng)度的協(xié)議，剛好對(duì)應(yīng)了
Erlang的Socket選項(xiàng) {packet,2}
這使得兩者的通信非常完美，再也不用擔(dān)心粘包什么的問題了
下面是我寫的一個(gè)Flash Socket 接口：SocketBridge.as
package 
{
import flash.display.Sprite;
import flash.events.*;
import flash.net.Socket;
import flash.utils.*;
import flash.external.ExternalInterface;
import flash.system.*;
public class SocketBridge extends Sprite {
Socket.prototype.timeout =3000;
private var socket:Socket;
public function SocketBridge()
{
socket = new Socket();
socket.addEventListener( Event.CONNECT, onConnect );
socket.addEventListener( ProgressEvent.SOCKET_DATA, onDataRecevice);
socket.addEventListener( Event.CLOSE, onClose);
socket.addEventListener( IOErrorEvent.IO_ERROR, onError);
if(ExternalInterface.available)
{
ExternalInterface.addCallback("socket_connect",socket_connect);
ExternalInterface.addCallback("socket_send",socket_send);
ExternalInterface.addCallback("load_policy",load_policy);
}
}
public function onError(e):void
{
ExternalInterface.call("sb_onerror",e.text);
socket.close();
}
public function load_policy(host:String,port):void
{
Security.loadPolicyFile("xmlsocket://"+host+":"+port);
}
public function socket_connect(host:String,port):void
{
try{
socket.connect(host,port);
}catch(e){
ExternalInterface.call("sb_onerror",e.text);
}
}
public function socket_send(msg:String)
{
socket.writeUTF(msg);
socket.flush();
}
private function onConnect(event:Event):void
{
ExternalInterface.call("sb_onconnect",true);
}
private function onClose(event:Event):void
{
socket.close();
ExternalInterface.call("sb_onclose",true);
}
private function onDataRecevice( eventrogressEvent ):void
{
var sdata:String;
while(socket.bytesAvailable){
sdata = socket.readUTF();
ExternalInterface.call("sb_ondata",sdata);
}
}
}
}
posted on 2009-09-18 12:40
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