// 数据接受回调函数
private void HandleDataReceived(IAsyncResult ar)
{
if (IsRunning)
{
TCPClientState state = (TCPClientState)ar.AsyncState;
if (state.TcpClient == null || !state.TcpClient.Connected)
{
return;
}
NetworkStream stream = state.NetworkStream;
int receivedBytes = 0;
try
{
receivedBytes = stream.EndRead(ar);
}
catch
{
receivedBytes = 0;
}
if (receivedBytes == 0)
{
// connection has been closed
lock (this._clients)
{
this._clients.Remove(state);
//触发客户端连接断开事件
RaiseClientDisconnected(state);
//Log.OutputLine("连接断开");
state.Close();
return;
}
}
// received byte and trigger event notification
byte[] buff = new byte[receivedBytes];
Buffer.BlockCopy(state.Buffer, 0, buff, 0, receivedBytes);
//触发数据收到事件
RaiseDataReceived(state, buff);
try
{
if (state.TcpClient.Connected)
{
// continue listening for tcp datagram packets
stream.BeginRead(state.Buffer, 0, state.Buffer.Length, HandleDataReceived, state);
}
}
catch
{
}
}
}
/// <summary>
/// 关闭一个与客户端之间的会话
/// </summary>
/// <param name="state">需要关闭的客户端会话对象</param>
public void Close(TCPClientState state)
{
if (state != null)
{
state.Close();
lock (this._clients)
{
this._clients.Remove(state);
}
//TODO 触发关闭事件
}
}
