public bool pkt_proc(pkt p, IPEndPoint r)
{
this.r = r; // update remote info dynamically
switch (p.type)
{
case "message":
hear(p.id, p.content);
break;
case "message_response":
int pid = int.Parse(p.id);
if (!pkthash.ContainsKey(pid))
{
break;
}
byte[] buf = (byte[])pkthash[pid];
pkthash.Remove(pid);
msghash.Remove(buf);
Timer retrytmr = (Timer)tmrhash[buf];
tmrhash.Remove(buf);
retrytmr.Change(Timeout.Infinite, Timeout.Infinite);
retrytmr.Dispose();
break;
default:
break;
}
return(true);
}
void hear_task()
{
try
{
byte[] rcvBuffer;
pkt p = new pkt();
while (true)
{
rcvBuffer = uc.Receive(ref r);
p.parse(rcvBuffer);
pkt_proc(p, r);
}
}
catch (Exception) { }
}
void server_task(int port)
{
try
{
uc = new UdpClient(port);
IPEndPoint r = new IPEndPoint(IPAddress.Any, port);
byte[] rcvBuffer;
pkt p = new pkt();
while (true)
{
rcvBuffer = uc.Receive(ref r);
p.parse(rcvBuffer);
switch (p.type)
{
case "query":
pkt n = new query_response_pkt(username);
byte[] buf = n.pack();
uc.SendAsync(buf, buf.Length, r);
break;
case "query_response":
adduser(r, p.user);
break;
case "notification":
show_notification(r, p.user, p.content);
break;
case "message":
log("I: recv chat from " + p.user + " " + r.Address + " msg " + p.content);
if (chathash.ContainsKey(r.Address))
{
if (((rchatform)chathash[r.Address]).IsDisposed)
{
chathash.Remove(r.Address);
}
else
{
((rchatform)chathash[r.Address]).pkt_proc(p, r); // reuse old session
((rchatform)chathash[r.Address]).Activate();
break;
}
}
rchatform f = new rchatform(log, username, p.user, r);
Thread t = new Thread(() => Application.Run(f));
t.IsBackground = true;
t.Start();
f.pkt_proc(p, r);
chathash.Add(r.Address, f); // keep only one session per ip
break;
default:
break;
}
}
}
catch (Exception e)
{
log("!E: daemon " + e.ToString());
}
}
public bool pkt_proc(pkt pkt, IPEndPoint r)
{
this.r = r;
return(chatss.pkt_proc(pkt, r));
}
