public IPEndPoint StartNeg(bool IsCaller, IPEndPoint[] local, IPEndPoint[] remote)
{
if (IsCaller)
{
bool done = false;
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2; j++)
{
if (!done)
{
IPEndPoint from = local[i];
IPEndPoint to = remote[j];
RTPUDPClient.MySend(to.Address.ToString(), to.Port, "tst " + from.ToString());
string res = RTPUDPClient.MyReceive1(4505);
if (res == "Success")
{
RTPUDPClient.MySend(to.Address.ToString(), to.Port, "fin " + from.ToString());
return(to);
}
}
}
}
return(null);
}
else
{
top:
string message = RTPUDPClient.MyReceive(4505);
string mestype = message.Substring(0, 3);
string remain = message.Substring(4);
if (mestype.Equals("fin"))
{
return(new IPEndPoint(IPAddress.Parse(remain.Substring(0, remain.IndexOf(':'))), Convert.ToInt32(remain.Substring(remain.IndexOf(':') + 1))));
}
else if (mestype.Equals("tst"))
{
IPEndPoint to = new IPEndPoint(IPAddress.Parse(remain.Substring(0, remain.IndexOf(':'))), Convert.ToInt32(remain.Substring(remain.IndexOf(':') + 1)));
RTPUDPClient.MySend(to.Address.ToString(), to.Port, "Success");
goto top;
}
}
return(null);
}
public string TestRecv()
{
return(RTPUDPClient.MyReceive1(4507));
}
