private static void RecVing(IAsyncResult Result)
{ //通过 result 获取socket。在这个socket上你启动了BeginAccept操作
Socket socket = Result.AsyncState as Socket;
Socket Res_soc = null； //这个是与当前客户端连接的Socket
Socket_Business business = new Socket_Business();
try
{
// 通过EndAccept，获取与当前客户端连接的Socket
Res_soc = socket.EndAccept(Result);
Console.WriteLine("连接成功！");
byte[] bytes =new byte[80];
int i = Res_soc.Receive(bytes);
string cmdstr = System.Encoding.Default.GetString(bytes, 0, i);
Console.WriteLine(cmdstr);
business.Business(bytes, Res_soc);
send(Res_soc);
}
catch {
// 发生异常时，释放Res_soc
if(Res_soc != null) Res_soc = null;
}
finally //利用finally 确保无论发生什么异常都能够让socket继续接收连接
{
//继续异步等待连接
socket.BeginAccept(new AsyncCallback(RecVing), socket);
}
}