void ReceiveCallback(IAsyncResult ar)
{
SocketTool frd = (SocketTool)ar.AsyncState;
try
{
int i = frd.socket.EndReceive(ar);
if (i == 0)
{
return;
}
else
{
string data = System.Text.Encoding.UTF8.GetString(frd.Rcvbuffer, 0, i);
try
{
Log.Output(data);
LisDataAnalysis(data);
}
catch { }
frd.ClearBuffer();
frd.socket.BeginReceive(frd.Rcvbuffer, 0, frd.Rcvbuffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), frd);
}
}
catch (Exception ex)
{
this.SetSocketInfo(ex.Message);
Log.Output(ex.Message);
}
}
void AcceptCallback(IAsyncResult ar)
{
try
{
//完成异步接受连接请求的异步调用
//将连接信息添加到列表和下拉列表框中
Socket handle = listener.EndAcceptSocket(ar);
SocketTool frd = new SocketTool(handle);
//继续调用异步方法接收连接请求
if (isListenStart)
{
listener.BeginAcceptSocket(new AsyncCallback(AcceptCallback), listener);
}
//开始在连接上进行异步的数据接收
frd.ClearBuffer();
frd.socket.BeginReceive(frd.Rcvbuffer, 0, frd.Rcvbuffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), frd);
}
catch (Exception ex)
{
//在调用EndAcceptSocket方法时可能引发异常
//——套接字Listener被关闭，则设置为未启动侦听状态
isListenStart = false;
this.SetSocketInfo(ex.Message);
}
}