private void startListener()
{
IPAddress address = IPAddress.Parse(localIp);
IPEndPoint ep = new IPEndPoint(address, int.Parse(port));
TcpListener listener = new TcpListener(ep);
listener.Start();
startReceiveData();
byte[] buffer = new byte[2 * 8192];
var sender = listener.AcceptTcpClient();
sender.ReceiveBufferSize = 2 * 8192;
// Set the timeout for synchronous receive methods to
// 40 second (1000 milliseconds.) because after 30 seconds without any new message an ALIVE message
// should be received
sender.ReceiveTimeout = 60 * 1000;
while (true)
{
// Accept connection again
//
if ((sender == null) || !sender.Connected)
{
sender = listener.AcceptTcpClient(); // blocking call ...
}
// Try to read received message
//
int iReadNum = 0;
iReadNum = sender.GetStream().Read(buffer, 0, sender.ReceiveBufferSize); //bytesize
// Any message received?
if (iReadNum == 0)
{
// Here simple retry again.. Timeout and reconnect handling should be implemented
continue;
}
// Message received .. it is always of type unicode!
string tcpMessage = System.Text.Encoding.Unicode.GetString(buffer).Substring(0, iReadNum / 2);
Debug.WriteLine(tcpMessage);
// The format of the received message string is described in the next chapter “Event messsages”
if (tcpMessage.Contains("ALIVE="))//如果是心跳
{
string dtStr = tcpMessage.Substring(tcpMessage.IndexOf("ALIVE="), 20);
}
if (tcpMessage.Contains("START=") || tcpMessage.Contains("ALIVE="))
{
continue;
}
if (tcpMessage.Contains("MSGTEXT=\"door is closed\"") || tcpMessage.Contains("MSGTEXT=\"door is open\"")) //开门关门暂不处理
{
continue;
}
else if (tcpMessage.Contains("MSGTEXT=\"access\"") || tcpMessage.Contains("MSGTEXT=\"access, via remote command\""))//合法卡刷卡、远程开门，发送至正常刷卡队列
{
SwipeEntity swipte = tcpToSwipe(tcpMessage);
string message = swipte.toJson();
KafkaWorker.sendSwipeMessage(message);
}
else //报警信息发送至报警队列
{
AlarmEntity alarm = tcpToAlarm(tcpMessage);
string message = alarm.toJson();
KafkaWorker.sendAlarmMessage(message);
}
}
}
