TCP通信问题

[smaworm]

计算机通过网络与一个网络设备（TCP/IP端口的门禁主板）相连，
主板IP：192.168.0.97 计算机IP：192.168.1.121
门禁主板每隔5秒会自动发送一段数据，计算机需要接收这段数据。
我是这么连接的
private IPAddress HostIP = IPAddress.Parse("192.168.0.97");
private IPEndPoint ChatSever;
private Socket ChatSocket;
ChatSever = new IPEndPoint(HostIP, Int32.Parse("8000"));
ChatSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
ChatSocket.Connect(ChatSever);
Thread thread = new Thread(new ThreadStart(ChatProcess));
thread.Start();

private IPAddress HostIP = IPAddress.Parse("192.168.0.97");
private IPEndPoint ChatSever;
private Socket ChatSocket;
ChatSever = new IPEndPoint(HostIP, Int32.Parse("8000"));
ChatSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
ChatSocket.Connect(ChatSever);
Thread thread = new Thread(new ThreadStart(ChatProcess));
thread.Start();

private void ChatProcess()
{
while (flag)
{
byte[] ReceiveByte = new byte[64];
ChatSocket.Receive(ReceiveByte, ReceiveByte.Length, 0);
}
}

问题：1.如果连接不上主板 ChatSocket.Connect(ChatSever); 反应时间很长才能被捕获
2.如果中途连接断开，如何才能获悉连接中断呢？

或者高手们给个例子

[无常名]

中途连接中断应该有异常吧？

[vpoint2009]

1，同问，明明是TCP为什么感觉一点都不可靠呢？？？
2,监听是while（true）的，断开自然会被第一时间发现，至少我写这方面应用的时候是这样的。

[puwudaxian]

ChatSocket.Receive(ReceiveByte, ReceiveByte.Length, 0);
这句加个异常处理如果断开服务器接受的字节为0