private void RefreshThread()
{
using (TimedUdpClient client = new TimedUdpClient())
{
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, 0);
mainWindowInterface.SetServerProperty(this, "Title", "Connecting to Server");
mainWindowInterface.SetServerProperty(this, "State", StateEnum.Querying);
// reset properties
mainWindowInterface.SetServerProperty(this, "Ping", null);
mainWindowInterface.SetServerProperty(this, "GameName", null);
mainWindowInterface.SetServerProperty(this, "Map", null);
mainWindowInterface.SetServerProperty(this, "NumSpectators", null);
mainWindowInterface.SetServerProperty(this, "MaxSpectators", null);
mainWindowInterface.SetServerProperty(this, "PasswordProtected", null);
try
{
DateTime connectTime = DateTime.Now;
// attempt to connect
Int32 colonIndex = address.IndexOf(':');
// what's the timeout???
client.Connect(address.Remove(colonIndex), Convert.ToInt32(address.Substring(colonIndex + 1)));
// update title as "connected"
mainWindowInterface.SetServerProperty(this, "Title", "Connected");
if (abortRefresh)
{
Common.AbortThread(Thread);
}
// send A2S_INFO
// -1 (int), A2S_INFO, "Source Engine Query" (string)
DateTime sendTime = DateTime.Now;
client.Send(new Byte[] { 0xFF, 0xFF, 0xFF, 0xFF, A2S_INFO, 0x53, 0x6F, 0x75, 0x72, 0x63, 0x65, 0x20, 0x45, 0x6E, 0x67, 0x69, 0x6E, 0x65, 0x20, 0x51, 0x75, 0x65, 0x72, 0x79, 0x00 });
// receive A2S_INFO reply
Byte[] infoReply = client.Receive(ref ipEndPoint);
if (infoReply == null)
{
throw new ApplicationException("Server not responding.");
}
// calculate ping
TimeSpan ping = DateTime.Now - connectTime;
mainWindowInterface.SetServerProperty(this, "Ping", ping.Milliseconds);
// parse A2S_INFO reply
ParseInfoQueryReply(infoReply);
if (client.Available > 0) // fuuuuuuckkkk yoooooouuu Vaaaaaaalllvvvveeee
{
client.Receive(ref ipEndPoint);
}
// send A2S_SERVERQUERY_GETCHALLENGE
// -1 (int), A2S_SERVERQUERY_GETCHALLENGE
/*client.Send(new Byte[] { 0xFF, 0xFF, 0xFF, 0xFF, A2S_SERVERQUERY_GETCHALLENGE });
*
* // receive and parse A2S_SERVERQUERY_GETCHALLENGE reply
* Byte[] serverQueryGetChallengeReply = client.Receive(ref ipEndPoint);
* if (serverQueryGetChallengeReply == null)
* {
* throw new ApplicationException("Server ignored challenge.");
* }*/
//Int32 challengeNumber = ParseServerQueryGetChallengeReply(serverQueryGetChallengeReply);
Int32 challengeNumber = -1;
while (true)
{
if (abortRefresh)
{
Common.AbortThread(Thread);
}
// send A2S_PLAYER
BitWriter bitWriter = new BitWriter();
bitWriter.WriteInt32(-1);
bitWriter.WriteByte(A2S_PLAYER);
bitWriter.WriteInt32(challengeNumber);
client.Send(bitWriter.Data);
// receive and parse A2S_PLAYER reply
Byte[] playerReply = client.Receive(ref ipEndPoint);
if (playerReply == null)
{
if (challengeNumber != -1)
{
// oh, it's a sourcetv server and valve are too incompetent to implement s2c_player
break;
}
throw new ApplicationException("Player query failed.");
}
// check for a challenge number (source servers)
BitBuffer bitBuffer = new BitBuffer(playerReply);
if (bitBuffer.ReadInt32() != -1)
{
throw new ApplicationException("Bad A2S_PLAYER reply");
}
Byte type = bitBuffer.ReadByte();
if (type == S2C_CHALLENGE)
{
challengeNumber = bitBuffer.ReadInt32();
continue;
}
else if (type == S2C_PLAYER)
{
ParsePlayerQueryReply(bitBuffer);
}
else
{
throw new ApplicationException(String.Format("Bad A2S_PLAYER type: {0}", type));
}
break;
}
mainWindowInterface.SetServerProperty(this, "State", StateEnum.Succeeded);
}
catch (ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
if (!abortRefresh)
{
mainWindowInterface.SetServerProperty(this, "Title", ex.Message);
mainWindowInterface.SetServerProperty(this, "State", StateEnum.Failed);
}
}
finally
{
client.Close();
}
}
}
