} // recCallBack
/// <summary>
/// 回调函数发:送数据
/// </summary>
/// <param name="ar">the ar</param>
public static void sendCallBack(IAsyncResult ar)
{
// 当前用户实例
User currentUser = User.GetInstance();
SendCallBackParam sendCallBackParam = (SendCallBackParam)ar.AsyncState;
ListBox lstBox_recMsg = sendCallBackParam.lstBox_recMsg;
string strSend = sendCallBackParam.strSend;
DelegateMem.AppendDelegate appendString = sendCallBackParam.appendString;
try
{
//异步通信 结束数据的异步发送
currentUser.socket.EndSend(ar);
strSend = "发：" + strSend;
// 在右侧显示
string showStr = strSend.PadLeft(lstBox_recMsg.Width / 10, ' ');
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, showStr);
} // try
catch (System.Exception ex)
{
SocketHandler.ShutDownConn(currentUser.socket);
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, "服务器断开了TCP连接");
} // catch
} // sendCallBack
/// <summary>
/// 回调函数：接受消息
/// </summary>
/// <param name="ar">the ar</param>
public static void recCallBack(IAsyncResult ar)
{
try
{
// 接受消息的缓冲槽
byte[] recvBuffer = (byte[])ar.AsyncState;
// 当前用户的实例
User currentUser = User.GetInstance();
// 接受到的每一条消息
RecvdMsg recvMsg = new RecvdMsg();
// 消息列表实例
MsgList msgList = MsgList.GetInstance();
try
{
int i = currentUser.socket.EndReceive(ar);
string str_data = Encoding.UTF8.GetString(recvBuffer, 0, i);
// 解析数据
C2CAnayMsg c2cAnayMsg = new C2CAnayMsg(str_data);
// 初始化收到信息类
recvMsg.type = c2cAnayMsg.type;
recvMsg.userName = c2cAnayMsg.srcUser;
recvMsg.srcIP = c2cAnayMsg.srcIP;
recvMsg.destName = c2cAnayMsg.destName;
recvMsg.content = c2cAnayMsg.content;
if (recvMsg.type != null)
{
msgList.recvMsgList.Add(recvMsg);
} // if
recvBuffer = new byte[currentUser.socket.SendBufferSize];
//循环接收
AsyncCallback callBack = new AsyncCallback(recCallBack);
//异步调用
currentUser.socket.BeginReceive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None, callBack, recvBuffer);//开始从连接的Socket中接收数据
} // try
catch (System.Exception ex)
{
if (currentUser.socket != null)
{
SocketHandler.ShutDownConn(currentUser.socket);
} // if
} /// catch
} // try
catch (System.Exception ex)
{
// 封装客户端停止连接时的异常
} // catch
} // recCallBack
