private void AppendServerProperty(StringBuilder builder, string name)
{
builder.Append("\0");
builder.Append(name);
builder.Append("\0");
builder.Append(AttachedServer?.GetByName(name) ?? string.Empty);
}
private void OnDataReceived(object sender, SocketAsyncEventArgs e)
{
if (RemoteUserSteamId == CSteamID.Nil)
{
return;
}
try
{
LocalPoint = e.RemoteEndPoint as IPEndPoint;
var count = (uint)e.BytesTransferred;
byte[] receivedBytes = new byte[e.BytesTransferred];
Array.Copy(e.Buffer, e.Offset, receivedBytes, 0, e.BytesTransferred);
var str = Encoding.UTF8.GetString(receivedBytes);
// there by a bunch of different message formats...
//Log(Category, $">> {RemoteUserSteamId} "+str);
//Log(Category, ">> BYTES:" + string.Join(" ", receivedBytes.Select(x => x.ToString())));
//Console.WriteLine("SendTo "+ _userId.m_SteamID+" "+ e.BytesTransferred);
// IPEndPoint remote = (IPEndPoint)e.RemoteEndPoint;
// "��\0���J���\u0001"
// ��\0�z�J���\u0001
// "254 253 0 247 122 228 74 255 255 255 1"
// "254 253 0 170 87 26 75 255 255 255 1"
// Fake host response to speed up connection
try
{
if (count == 11 &&
e.Buffer[0] == 254 &&
e.Buffer[1] == 253 &&
e.Buffer[2] == 0 &&
// e.Buffer[3] == 247 &&
// e.Buffer[4] == 122 &&
// e.Buffer[5] == 228 &&
// e.Buffer[6] == 228 &&
e.Buffer[7] == 255 &&
e.Buffer[8] == 255 &&
e.Buffer[9] == 255 &&
e.Buffer[10] == 1)
{
// Log(Category, ">> REQUEST BYTES:" + string.Join(" ", receivedBytes.Select(x => x.ToString())));
var builder = new StringBuilder("\0$��Jsplitnum\0�");
AppendServerProperty(builder, "numplayers");
AppendServerProperty(builder, "maxplayers");
AppendServerProperty(builder, "hostname");
AppendServerProperty(builder, "hostport", Port.ToString());
AppendServerProperty(builder, "mapname");
AppendServerProperty(builder, "password");
AppendServerProperty(builder, "gamever");
AppendServerProperty(builder, "numplayers");
AppendServerProperty(builder, "maxplayers");
AppendServerProperty(builder, "score_");
AppendServerProperty(builder, "teamplay");
AppendServerProperty(builder, "gametype");
AppendServerProperty(builder, "gamevariant");
AppendServerProperty(builder, "groupid");
AppendServerProperty(builder, "numobservers");
AppendServerProperty(builder, "maxobservers");
AppendServerProperty(builder, "modname");
AppendServerProperty(builder, "moddisplayname");
AppendServerProperty(builder, "modversion");
AppendServerProperty(builder, "devmode");
for (int i = 0; i < 32; i++)
{
AppendServerProperty(builder, "gametype" + i);
}
var hostname = AttachedServer?.GetByName("hostname") ?? string.Empty;
builder.Append($"\u0001player_\0\0{hostname}\0\0ping_\0\00\0\0player_\0\0{hostname}\0\0\0\u0002\0");
var fakeString = builder.ToString();
var bytes = Encoding.UTF8.GetBytes(fakeString);
// unique Id
bytes[1] = e.Buffer[3];
bytes[2] = e.Buffer[4];
bytes[3] = e.Buffer[5];
bytes[4] = e.Buffer[6];
// 172 164 27 75
Console.WriteLine("SERVER FAKE " + fakeString);
_socket?.SendTo(bytes, bytes.Length, SocketFlags.None, LocalPoint ?? GameEndPoint);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
SteamNetworking.SendP2PPacket(RemoteUserSteamId, e.Buffer, count, EP2PSend.k_EP2PSendReliable);
}
catch (Exception ex)
{
LogError(Category, ex.ToString());
}
WaitForData();
}
