/// <summary>
/// _Datagram_Connect
/// </summary>
qsocket_t InternalConnect(string host)
{
// see if we can resolve the host name
EndPoint sendaddr = Net.LanDriver.GetAddrFromName(host);
if (sendaddr == null)
{
return(null);
}
Socket newsock = Net.LanDriver.OpenSocket(0);
if (newsock == null)
{
return(null);
}
qsocket_t sock = Net.NewSocket();
if (sock == null)
{
goto ErrorReturn2;
}
sock.socket = newsock;
sock.landriver = Net.LanDriverLevel;
// connect to the host
if (Net.LanDriver.Connect(newsock, sendaddr) == -1)
{
goto ErrorReturn;
}
// send the connection request
Con.Print("trying...\n");
Scr.UpdateScreen();
double start_time = Net.Time;
int ret = 0;
for (int reps = 0; reps < 3; reps++)
{
Net.Message.Clear();
// save space for the header, filled in later
Net.Message.WriteLong(0);
Net.Message.WriteByte(CCReq.CCREQ_CONNECT);
Net.Message.WriteString("QUAKE");
Net.Message.WriteByte(Net.NET_PROTOCOL_VERSION);
Common.WriteInt(Net.Message.Data, 0, Common.BigLong(NetFlags.NETFLAG_CTL |
(Net.Message.Length & NetFlags.NETFLAG_LENGTH_MASK)));
//*((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
Net.LanDriver.Write(newsock, Net.Message.Data, Net.Message.Length, sendaddr);
Net.Message.Clear();
EndPoint readaddr = new IPEndPoint(IPAddress.Any, 0);
do
{
ret = Net.Message.FillFrom(newsock, ref readaddr);
// if we got something, validate it
if (ret > 0)
{
// is it from the right place?
if (sock.LanDriver.AddrCompare(readaddr, sendaddr) != 0)
{
#if DEBUG
Con.Print("wrong reply address\n");
Con.Print("Expected: {0}\n", StrAddr(sendaddr));
Con.Print("Received: {0}\n", StrAddr(readaddr));
Scr.UpdateScreen();
#endif
ret = 0;
continue;
}
if (ret < sizeof(int))
{
ret = 0;
continue;
}
Net.Reader.Reset();
int control = Common.BigLong(Net.Reader.ReadLong());// BigLong(*((int *)net_message.data));
//MSG_ReadLong();
if (control == -1)
{
ret = 0;
continue;
}
if ((control & (~NetFlags.NETFLAG_LENGTH_MASK)) != NetFlags.NETFLAG_CTL)
{
ret = 0;
continue;
}
if ((control & NetFlags.NETFLAG_LENGTH_MASK) != ret)
{
ret = 0;
continue;
}
}
}while ((ret == 0) && (Net.SetNetTime() - start_time) < 2.5);
if (ret > 0)
{
break;
}
Con.Print("still trying...\n");
Scr.UpdateScreen();
start_time = Net.SetNetTime();
}
string reason = String.Empty;
if (ret == 0)
{
reason = "No Response";
Con.Print("{0}\n", reason);
Menu.ReturnReason = reason;
goto ErrorReturn;
}
if (ret == -1)
{
reason = "Network Error";
Con.Print("{0}\n", reason);
Menu.ReturnReason = reason;
goto ErrorReturn;
}
ret = Net.Reader.ReadByte();
if (ret == CCRep.CCREP_REJECT)
{
reason = Net.Reader.ReadString();
Con.Print(reason);
Menu.ReturnReason = reason;
goto ErrorReturn;
}
if (ret == CCRep.CCREP_ACCEPT)
{
IPEndPoint ep = (IPEndPoint)sendaddr;
sock.addr = new IPEndPoint(ep.Address, ep.Port);
Net.LanDriver.SetSocketPort(sock.addr, Net.Reader.ReadLong());
}
else
{
reason = "Bad Response";
Con.Print("{0}\n", reason);
Menu.ReturnReason = reason;
goto ErrorReturn;
}
sock.address = Net.LanDriver.GetNameFromAddr(sendaddr);
Con.Print("Connection accepted\n");
sock.lastMessageTime = Net.SetNetTime();
// switch the connection to the specified address
if (Net.LanDriver.Connect(newsock, sock.addr) == -1)
{
reason = "Connect to Game failed";
Con.Print("{0}\n", reason);
Menu.ReturnReason = reason;
goto ErrorReturn;
}
Menu.ReturnOnError = false;
return(sock);
ErrorReturn:
Net.FreeSocket(sock);
ErrorReturn2:
Net.LanDriver.CloseSocket(newsock);
if (Menu.ReturnOnError && Menu.ReturnMenu != null)
{
Menu.ReturnMenu.Show();
Menu.ReturnOnError = false;
}
return(null);
}