} // W_Main_Load
/// <summary>
/// 单击开始监听按钮
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the e</param>
private void btn_startListen_Click(object sender, EventArgs e)
{
//服务器已经其中监听，则返回
if (IsStart)
{
return;
}
//启动侦听
listener = ListenerHandler.GetListener();
listener.Start(10);
IsStart = true;
lstBox_statu.Invoke(appendString, string.Format("服务器已经自动侦听！端点为{0}",
listener.LocalEndpoint.ToString()),
lstBox_statu);
this.btn_startListen.Enabled = false;
// 初始化要传入的数据
AcceptCallBackParam acceptCallBackParam = new AcceptCallBackParam(listener, IsStart, lstBox_statu);
AsyncCallback callBack = new AsyncCallback(CallBackFunc.acceptCallBack);
listener.BeginAcceptSocket(callBack, acceptCallBackParam);
} // btn_startListen_Click
/// <summary>
/// 开始监听
/// </summary>
/// <param name="ar"></param>
public static void acceptCallBack(IAsyncResult ar)
{
// 初始化需要用的委托
Friends friends = Friends.GetInstance();
DelegateMem.AppendDelegate appendString;
appendString = new DelegateMem.AppendDelegate(DelegateMethod.appendMethod);
try
{
// 初始化关键参数
AcceptCallBackParam acceptCallBackParam = (AcceptCallBackParam)ar.AsyncState;
TcpListener listener = acceptCallBackParam.listener;
bool IsStart = acceptCallBackParam.IsStart;
ListBox lstBox_statu = acceptCallBackParam.lstBox_statu;
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
Socket clientSocket = listener.EndAcceptSocket(ar);
MyFriend frd = new MyFriend(clientSocket);
// 加入好友
lock (friends.friendList)
{
friends.friendList.Add(frd);
}
string connMsg = clientSocket.RemoteEndPoint.ToString() + "已连接...";
lstBox_statu.Invoke(appendString, connMsg, lstBox_statu);
AsyncCallback callBack;
if (IsStart)
{
callBack = new AsyncCallback(acceptCallBack);
listener.BeginAcceptSocket(callBack, acceptCallBackParam);
} // if
//开始在连接上进行异步的数据接收
frd.clearBuffer();
// 初始化要传入的参数
RecvCallBackParam recvCallBackParam = new RecvCallBackParam(
lstBox_statu,
frd,
appendString,
IsStart
);
callBack = new AsyncCallback(CallBackFunc.recvCallBack);
frd.socket.BeginReceive(frd.recvBuffer, 0, frd.recvBuffer.Length, SocketFlags.None, callBack, recvCallBackParam);
} // try
catch (System.Exception ex)
{
IsStart = false;
acceptCallBackParam.IsStart = false;
} // catch
} // try
catch (System.Exception ex)
{
// 终于封装了这个异常！！ 即调用stop只会关闭监听，但是仍然会执行这个函数，前面会转型失败.....跳转到这
} // catch
} // acceptCallBack
