/// <summary>Received some data from a client, let's see what we got.</summary>
protected override void HandleUdpData(object sender, ProtocolDataEventArgs e)
{
// Get the message type.
if (!e.Data.HasByte())
{
Logger.Warn("Received invalid packet, no SessionMessage type.");
return;
}
var type = (SessionMessage)e.Data.ReadByte();
// Get additional data.
// TODO what happens with data?
using (var data = e.Data.ReadPacketizable <Packet>())
{
switch (type)
{
case SessionMessage.GameInfoRequest:
// Game info was requested. Wrap it up and send it to the one asking.
{
using (var requestArgs = new RequestEventArgs())
{
OnGameInfoRequested(requestArgs); //< Get custom data to send, if any.
using (var packet = new Packet())
{
using (var packetInner = new Packet())
{
packetInner
.Write(MaxPlayers)
.Write(PlayerCount)
.Write(requestArgs.Data);
packet
.Write((byte)SessionMessage.GameInfoResponse)
.Write((IWritablePacket)packetInner);
Udp.Send(
packet,
e.RemoteEndPoint);
}
}
}
}
break;
// Ignore the rest.
default:
Logger.Trace("Unknown SessionMessage via UDP: {0}.", type);
break;
}
}
}
/// <summary>Received some data from a client, let's see what we got.</summary> protected abstract void HandleUdpData(object sender, ProtocolDataEventArgs e);
/// <summary>Received some data from a client, let's see what we got.</summary>
protected override void HandleUdpData(object sender, ProtocolDataEventArgs e)
{
// Get the message type.
if (!e.Data.HasByte())
{
Logger.Warn("Received invalid packet, no SessionMessage type.");
return;
}
var type = (SessionMessage)e.Data.ReadByte();
// Get additional data.
using (var packet = e.Data.ReadPacketizable <Packet>())
{
switch (type)
{
case SessionMessage.GameInfoResponse:
// Got some info on a running game. We only care if we're not in a game.
if (ConnectionState == ClientState.Unconnected)
{
if (packet == null)
{
// Bad data.
Logger.Warn("Invalid GameInfoResponse (no data).");
}
else
{
try
{
// Get number of max players.
var maxPlayers = packet.ReadInt32();
// Get number of current players.
var playerCount = packet.ReadInt32();
// Get additional data.
using (var customData = packet.ReadPacketizable <Packet>())
{
Logger.Trace(
"Got game info from host '{0}': {1}/{2} players, data of length {3}.",
e.RemoteEndPoint,
playerCount,
maxPlayers,
customData.Length);
// Propagate to local program.
OnGameInfoReceived(
new GameInfoReceivedEventArgs(
e.RemoteEndPoint,
playerCount,
maxPlayers,
customData));
}
}
catch (PacketException ex)
{
// Bad data.
Logger.WarnException("Invalid GameInfoResponse.", ex);
}
}
}
break;
case SessionMessage.Data:
// Custom data, just forward it if we're in a session.
if (ConnectionState == ClientState.Connected)
{
try
{
OnData(
new ClientDataEventArgs(
packet, _tcp != null && Equals(e.RemoteEndPoint, _tcp.Client.RemoteEndPoint)));
}
catch (PacketException ex)
{
Logger.WarnException("Invalid Data.", ex);
}
}
break;
// Nothing else is handled via UDP.
default:
Logger.Debug("Unknown SessionMessage via UDP: {0}.", type);
break;
}
}
}
