private TeleportClientData PerformFirstMessageAuthentication(EndPoint sender, TeleportReader reader)
{
TeleportClientData clientData;
var header = reader.ReadByte();
var isFirstAuth = (header & 1) == 0;
byte authKey;
uint clientId;
if (isFirstAuth)
{
authKey = 13; // TODO: Randomize
clientId = _nextClientId;
_nextClientId++;
clientData = new TeleportClientData()
{
endpoint = sender,
isAuthenticated = true,
authKey = authKey,
clientId = clientId,
};
_clientDataByEndpoint[sender] = clientData;
_clientDataById[clientId] = clientData;
Send((w) =>
{
w.Write(TeleportMsgTypeIds.Handshake);
w.Write(authKey);
w.Write(clientId);
});
OnClientConnected(clientId, sender);
}
else
{
authKey = (byte)(header >> 1);
clientId = reader.ReadUInt32();
clientData = _clientDataById[clientId];
if (authKey != clientData.authKey)
{
throw new Exception("Auth key mismatches");
}
}
return(clientData);
}
private void ProcessHandshake(TeleportReader reader)
{
_authKey = reader.ReadByte();
_clientId = reader.ReadUInt32();
_isAuthenticated = true;
}
