public override void ChannelRead(IChannelHandlerContext context, object obj)
{
var message = obj as UdpMessage;
Debug.Assert(message != null);
try
{
var session = _server.SessionsByUdpId.GetValueOrDefault(message.SessionId);
if (session == null)
{
if (message.Content.GetByte(0) != (byte)ProudCoreOpCode.ServerHolepunch)
{
throw new ProudException(
$"Expected {ProudCoreOpCode.ServerHolepunch} as first udp message but got {(ProudCoreOpCode)message.Content.GetByte(0)}");
}
var holepunch = (ServerHolepunchMessage)CoreMessageDecoder.Decode(message.Content);
session = _server.Sessions.Values.FirstOrDefault(x =>
x.HolepunchMagicNumber.Equals(holepunch.MagicNumber));
if (session == null)
{
return;
}
if (session.UdpSocket != _socket)
{
return;
}
session.UdpSessionId = message.SessionId;
session.UdpEndPoint = message.EndPoint;
_server.SessionsByUdpId[session.UdpSessionId] = session;
session.SendUdpAsync(new ServerHolepunchAckMessage(session.HolepunchMagicNumber, session.UdpEndPoint));
return;
}
if (session.UdpSocket != _socket)
{
return;
}
session.Channel.Pipeline.Context <ProudFrameDecoder>().FireChannelRead(message.Content.Retain());
}
finally
{
message.Content.Release();
}
}
public override void ChannelRead(IChannelHandlerContext context, object obj)
{
var message = obj as UdpMessage;
Debug.Assert(message != null);
var log = _server.Configuration.Logger?
.ForContext("EndPoint", message.EndPoint.ToString());
try
{
var session = _server.SessionsByUdpId.GetValueOrDefault(message.SessionId);
if (session == null)
{
if (message.Content.GetByte(0) != (byte)ProudCoreOpCode.ServerHolepunch)
{
log?.Warning("Expected ServerHolepunch as first udp message but got {MessageType}", (ProudCoreOpCode)message.Content.GetByte(0));
return;
}
var holepunch = (ServerHolepunchMessage)CoreMessageDecoder.Decode(message.Content);
// TODO add a lookup by holepunch magic
session = _server.Sessions.Values.FirstOrDefault(x =>
x.HolepunchMagicNumber.Equals(holepunch.MagicNumber));
if (session == null)
{
log?.Warning("Invalid holepunch magic number");
return;
}
if (session.UdpSocket != _socket)
{
log?.Warning("Client is sending to the wrong udp socket");
return;
}
session.UdpSessionId = message.SessionId;
session.UdpEndPoint = message.EndPoint;
_server.SessionsByUdpId[session.UdpSessionId] = session;
session.SendUdpAsync(new ServerHolepunchAckMessage(session.HolepunchMagicNumber, session.UdpEndPoint));
return;
}
if (session.UdpSocket != _socket)
{
log?.Warning("Client is sending to the wrong udp socket");
return;
}
var recvContext = new RecvContext
{
Message = message.Content.Retain(),
UdpEndPoint = message.EndPoint
};
session.Channel.Pipeline.Context <RecvContextDecoder>().FireChannelRead(recvContext);
}
finally
{
message.Content.Release();
}
}
public override void ChannelRead(IChannelHandlerContext context, object obj)
{
var message = obj as UdpMessage;
Debug.Assert(message != null);
try
{
var session = _udpSessionManager.GetSession(message.SessionId);
if (session == null)
{
if (message.Content.GetByte(0) != (byte)ProudCoreOpCode.ServerHolepunch)
{
_logger.Warning("<{EndPoint}> Expected ServerHolepunch as first udp message but got {MessageType}",
message.EndPoint.ToString(), (ProudCoreOpCode)message.Content.GetByte(0));
return;
}
var holepunch = (ServerHolepunchMessage)CoreMessageDecoder.Decode(_serializer, message.Content);
session = _magicNumberSessionManager.GetSession(holepunch.MagicNumber);
if (session == null)
{
_logger.Warning("<{EndPoint}> Invalid holepunch magic number={MagicNumber}",
message.EndPoint.ToString(), holepunch.MagicNumber);
return;
}
if (session.UdpSocket != Socket)
{
_logger.Warning("<{EndPoint}> Client is sending to the wrong udp socket",
message.EndPoint.ToString());
return;
}
session.UdpSessionId = message.SessionId;
session.UdpEndPoint = message.EndPoint;
_udpSessionManager.AddSession(session.UdpSessionId, session);
session.UdpSocket.Send(
new ServerHolepunchAckMessage(session.HolepunchMagicNumber, session.UdpEndPoint),
session.UdpEndPoint
);
return;
}
if (session.UdpSocket != Socket)
{
_logger.Warning("<{EndPoint}> Client is sending to the wrong udp socket",
message.EndPoint.ToString());
return;
}
session.UdpEndPoint = message.EndPoint;
var recvContext = new MessageContext
{
Session = session,
Message = message.Content.Retain(),
UdpEndPoint = message.EndPoint
};
session?.Channel?.Pipeline?.Context <MessageContextDecoder>()?.FireChannelRead(recvContext);
}
finally
{
message.Content.Release();
}
}