private static void ReceiveMsg()
{
while (isOn)
{
// 用来保存发送方的ip和端口号
EndPoint point = new IPEndPoint(IPAddress.Any, 0);
byte[] buffer = new byte[1024];
// 接收数据报
try
{
int length = socket.ReceiveFrom(buffer, ref point);
Cat021Data outData = CommWrapper.decode(buffer, UDPDataSource.type);
qData.Enqueue(outData);
}
catch (Exception)
{
return;
}
}
}
public static Cat021Data decode(Byte[] msg, Byte type)
{
if (null == msg || 0 == msg.Length)
{
Cat021Data exceptionData = new Cat021Data();
exceptionData.sModeAddress = -1;
exceptionData.flightNo = "CA0000";
return(exceptionData);
}
try
{
msg[1023] = type;
// Console.WriteLine("msg1 = " + msg[0] + ", " + msg[1] + ", " + msg[2]);
var p = Marshal.AllocHGlobal(1024);
Marshal.Copy(msg, 0, p, 1024);
IntPtr ptr = CommWrapper.decodeMessage4(p);
Marshal.FreeHGlobal(p);
msg[1023] = 0;
// Console.WriteLine("msg2 = " + msg[0] + ", " + msg[1] + ", " + msg[2]);
Cat021Data outData = (Cat021Data)Marshal.PtrToStructure(ptr, typeof(Cat021Data));
if (-1 == outData.sModeAddress)
{
Cat021Data exceptionData = new Cat021Data();
exceptionData.sModeAddress = -1;
exceptionData.flightNo = "CA0000";
return(exceptionData);
}
// Marshal.FreeHGlobal(ptr);
return(outData);
}
catch
{
Cat021Data exceptionData = new Cat021Data();
exceptionData.sModeAddress = -1;
exceptionData.flightNo = "CA0000";
return(exceptionData);
}
}