public ServerPingData PingServer(string host, int port, out string error)
{
ServerPingData pingData = new ServerPingData();
error = string.Empty;
//Add timer to handle timeouts
Timer timeoutTimer = new Timer(3000);
//Attemp to contact the server
try
{
client = new TcpClient(host, port);
//Send a single message notifying the server we would like it's stats (0 is the ping request ID)
data = new byte[1] { 0x00 };
//Get a client stream for reading and writing
stream = client.GetStream();
//Send the message to the connected TcpServer.
stream.Write(data, 0, data.Length);
Debug.WriteLine("ServerPinger Sent: " + data.ToString());
//Buffer to store the response bytes.
data = new byte[256];
//Read the first batch of the TcpServer response bytes
int bytes = stream.Read(data, 0, data.Length);
//TODO: This way of reading the recieved info is prone to errors
//Someone needs to find a way to use methods like ReadString(), ReadByte(), etc for this section
//This is a total hack and needs to be changed!
pingData.Online = int.Parse(Encoding.ASCII.GetString(data).Substring(0,1));
pingData.MaxOnline = int.Parse(Encoding.ASCII.GetString(data).Substring(1, 1));
pingData.Description = Encoding.ASCII.GetString(data).Substring(2).Replace("\0","");
}
catch (Exception e)
{
error = e.Message;
pingData.Error = true;
Debug.WriteLine(e.ToString());
if (e is SocketException)
{
//Provide some better error messages
int id = (e as SocketException).ErrorCode;
if (id == 10061) //No connection could be made because the target machine actively refused it
error = "Target is online, however is not accessible.\n(Not running a server on that port, or blocked through a firewall)";
else if (id == 10060) //A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
error = "Connection timed out, could not connect.";
}
}
finally
{
if (client != null)
client.Close();
}
return pingData;
}
private void PingServer(ServerPinger pinger)
{
string error = "";
ServerPingData ping = pinger.PingServer(Data.IP, Data.Port, out error);
Ping = ping;
//If no error
if (error == string.Empty)
{
//Set the controls with the recieved data
Stats.Text = ping.Online + "/" + ping.MaxOnline;
Stats.Left = (ClientWidth - (int)Manager.Skin.Fonts["Default14"].Resource.MeasureString(Stats.Text).X) - 4 - 32;
Motd.Text = ping.Description;
}
else
{
Motd.Text = error;
Motd.TextColor = Color.Gold;
}
}