Question

I’m creating an RCON web application for Call of Duty Black Ops. COD uses rcon and udp packets to send and receive information. Using the following code, I’ve been able to send and receive information with a COD4 server. Now that COD7 is out, I’m no longer receiving responses back.

Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
client.Connect(IPAddress.Parse(gameServerIP), gameServerPort);

string command;
command = password + " " + rconCommand;
byte[] bufferTemp = Encoding.ASCII.GetBytes(command);
byte[] bufferSend = new byte[bufferTemp.Length + 5];

//intial 5 characters as per standard
bufferSend[0] = byte.Parse("255");
bufferSend[1] = byte.Parse("255");
bufferSend[2] = byte.Parse("255");
bufferSend[3] = byte.Parse("255");
bufferSend[4] = byte.Parse("02");
int j = 5;

for (int i = 0; i < bufferTemp.Length; i++)
{
    bufferSend[j++] = bufferTemp[i];
}

//send rcon command and get response
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
client.Send(bufferSend, SocketFlags.None);

//big enough to receive response
byte[] bufferRec = new byte[65000];
client.Receive(bufferRec);            

Does anyone have any ideas? Black Ops ships with its own Rcon tool that I’ve tried using Wireshark to capture the outgoing packets to copy. The outgoing packets between my application and theirs are next to identical, except I get no replies back when I use mine.

Answer 1

i knwo why cause i make a tool myself.

What’s wrong in your code is that : bufferSend[4] = byte.Parse(“02”);

the good one is : bufferSend[4] = byte.Parse(“00”);

Try it, works for me!