public static Tuple <byte[], int, int> _0ControlMessages(BinaryReader data, int opCode, int length, byte[] bytes)
{
if (opCode == 0)
{
Console.WriteLine("OPCODE: SESSION OFFER");
UInt16 sessionid = DataHandler.USHRT(data);
UInt32 undefined = DataHandler.UINT(data);
Int32 timestamp = DataHandler.INT(data);
UInt32 milliseconds = DataHandler.UINT(data);
Console.WriteLine("Session ID: {0}", sessionid);
Console.WriteLine("undefined: {0}", undefined);
Console.WriteLine("Timestamp: {0}", timestamp);
Console.WriteLine("Milliseconds: {0}", milliseconds);
}
else if (opCode == 3)
{
Console.WriteLine("OPCODE: KEEP ALIVE");
UInt16 sessionid = DataHandler.USHRT(data);
UInt16 milliseconds = DataHandler.USHRT(data);
UInt16 minutes = DataHandler.USHRT(data);
Console.WriteLine("Sessiond ID: {0}", sessionid); //ID of the session
Console.WriteLine("Milliseconds: {0}", milliseconds); //How long the session has been open in MS
Console.WriteLine("Minutes: {0}", minutes); //Minutes since the session was established
byte[] b = new byte[length + 4];
Array.Copy(bytes, 0, b, 0, length + 4);
b[5] = 0x04; //Change the opcode to keepalive response, keeping the payload the same (which is what the server does)
return(Tuple.Create(b, 0, 0)); //Return the same payload, with a different svcid (04 for response, instead of 03 for request)
}
else if (opCode == 4)
{
Console.WriteLine("OPCODE: KEEP ALIVE RESPONSE");
uint undefined = DataHandler.USHRT(data);
uint timestamp = DataHandler.UINT(data);
Console.WriteLine("Unknown: {0}", undefined); //Unsure, always appears to be 0
Console.WriteLine("Timestamp: {0}", timestamp); //MS since the server started
}
else if (opCode == 5)
{
Console.WriteLine("OPCODE: SESSION ACCEPT");
uint undefined = DataHandler.USHRT(data); //Hasn't been observed to be anything above 0.
uint undefined2 = DataHandler.UINT(data); //Hasn't been observed to be anything above 0. Potentially the upper 4 bytes of a timestamp.
uint timestamp = DataHandler.UINT(data); //The UNIX timestamp(seconds since 01 / 01 / 1970) at the time this message was sent.
uint milliseconds = DataHandler.UINT(data); //The number of milliseconds we were in to the current second when this message was sent.
uint sessionId = DataHandler.USHRT(data); //The ID of the session that the client is accepting (from the SESSION_OFFER).
Console.WriteLine("Unknown1: {0}", undefined);
Console.WriteLine("Unknown2: {0}", undefined2);
Console.WriteLine("Timestamp: {0}", timestamp);
Console.WriteLine("Milliseconds: {0}", milliseconds);
Console.WriteLine("Session ID: {0}", sessionId);
byte[] bytarr = null;
return(Tuple.Create(bytarr, 0, 1));
}
else
{
Console.WriteLine("UNSUPPORTED OPCODE!");
}
return(null);
}