public void doWork()
{
while (_KeepRunning)
{
// D("UDP receive loop");
if (!_HasInit)
{
doInitUdp();
}
if (!_HasError)
{
try
{
if (_InitOkIndex++ == 0)
{
IPEndPoint tIPendPoint = new IPEndPoint(IPAddress.Any, 0);
BeatHeatStatusChangeHandler?.Invoke(CONNECT_STATUS.DISCOVERY_INIT_OK, tIPendPoint);
}
// Blocks until a message returns on this socket from a remote host.
// if (_UdpClient.Available > 0)
// {
_RecevBytes = _UdpClient.Receive(ref _RemoteIpEndPoint);
// }
}
catch (Exception e)
{
D("receive exception : " + e.ToString());
_HasError = true;
}
}
//D("" + mRemoteIpEndPoint.Address.ToString() + ":" + mRemoteIpEndPoint.Port.ToString());
if ((!_HasInit || _HasError) && _KeepRunning)
{
Thread.Sleep(3000);//wait a moment.
try
{
_UdpClient?.Close();
}
catch { }
_HasInit = false;
}
if (!_HasError)
{
ParseUdpPkg(_RecevBytes, _RemoteIpEndPoint);
}
}
}
private void doInitUdp()
{
try
{
_UdpClient = new UdpClient(_UdpListenPort);
_RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
_HasInit = true;
_HasError = false;
}
catch (Exception e)
{
_HasError = true;
_UdpClient.Close();
D("exceptio e " + e.ToString());
BeatHeatStatusChangeHandler?.Invoke(CONNECT_STATUS.DISCOVERY_INIT_ERROR, new IPEndPoint(IPAddress.Any, 0));
}
}
// {
// "msgtype": "broadcast",
// "promt": "testpcb",
// "index": 1,
// "ip": "192.168.31.128",
// "udpport": 28000,
// "tcpport": 28001
//}
// {"msgtype":"Test", "gogo":"98"}
private void ParseUdpPkg(byte[] msg, IPEndPoint iep)
{
if (msg == null || msg.Length < 2)
{
return;
}
string msgstring = Encoding.Default.GetString(msg);
// D("udp receiv: " + msgstring);
// D("udp endpoint " + iep.Address + " port:" + iep.Port);
try
{
JObject obj = JObject.Parse(msgstring);
string msgtype = obj["msgtype"].ToString();
//D("the msgtype is " + msgtype);
switch (msgtype)
{
case "broadcast":
int port = ProgramInfo.PCB_TCP_SERVER_LISTEN_PORT;
string ipaddr = iep.Address.ToString();
IPEndPoint pcbtcp = new IPEndPoint(IPAddress.Parse(ipaddr), port);
if (_PcbTcpServerEndPoint == null || (pcbtcp.Address != _PcbTcpServerEndPoint.Address && pcbtcp.Port != _PcbTcpServerEndPoint.Port))
{
D("get broadcast : pcbTcpEndPoint is " + pcbtcp.Address + ":" + pcbtcp.Port);
_PcbTcpServerEndPoint = pcbtcp;
D("set mPcbTcp ");
ProgramInfo.PCBIPAddrEndPoint = _PcbTcpServerEndPoint;
BeatHeatStatusChangeHandler?.Invoke(CONNECT_STATUS.DISCOVERY_GET_PCB, _PcbTcpServerEndPoint);
}
break;
default:
break;
}
}
catch (JsonException je)
{
D("jsonexception " + je.ToString());
}
}