private static void HandleMessage(NetMessageType type, NetConnection source, NetBuffer buffer)
{
switch (type)
{
case NetMessageType.DebugMessage:
Console.WriteLine(buffer.ReadString());
break;
case NetMessageType.StatusChanged:
NetConnectionStatus status = source.Status;
if (status == NetConnectionStatus.Connected)
{
source.Tag = ImageClientStatus.JustConnected;
s_nextPixelToSend[source] = 0;
}
else if (status == NetConnectionStatus.Disconnected)
{
if (s_nextPixelToSend.ContainsKey(source))
s_nextPixelToSend.Remove(source);
}
break;
case NetMessageType.Receipt:
source.Tag = ImageClientStatus.Running;
break;
default:
// unhandled
break;
}
}
public bool ReadMessage(NetBuffer intoBuffer, out NetMessageType type, out INetConnection sender)
{
NetConnection senderInternal;
bool messageExists = _netServer.ReadMessage(intoBuffer, out type, out senderInternal);
sender = new NetConnectionWrapper(senderInternal);
return messageExists;
}
private static void HandleMessage(NetMessageType type, NetConnection source, NetBuffer buffer)
{
switch (type)
{
case NetMessageType.DebugMessage:
WriteToConsole(buffer.ReadString());
break;
case NetMessageType.StatusChanged:
WriteToConsole("New status: " + source.Status + " (" + buffer.ReadString() + ")");
UpdateStatisticsDisplay(source);
break;
case NetMessageType.Data:
//System.IO.File.AppendAllText("C:\\receivedpackets.txt", s_userMessagesReceived.ToString() + ": " + msg.ReadString() + " (" + msg.m_sequenceNumber + ")" + Environment.NewLine);
s_userMessagesReceived++;
// simulate some processing of the message here
for (int i = 0; i < buffer.LengthBytes - 2; i++)
buffer.ReadByte();
// check checksum
ushort checksum = NetChecksum.Adler16(buffer.Data, 0, buffer.LengthBytes - 2);
ushort given = buffer.ReadUInt16();
if (checksum != given)
WriteToConsole("Wrong checksum! Expected " + checksum + " found given " + given);
double b = s_userMessagesReceived;
for (int i = 0; i < 1000; i++)
b += Math.Sqrt((double)i) / Math.Sin(s_tmp);
s_tmp += b / 10000.0;
break;
default:
break;
}
}
private static void HandleMessage(NetMessageType type, NetConnection source, NetBuffer buffer)
{
switch (type)
{
case NetMessageType.StatusChanged:
if (source.LocalHailData == null)
source.LocalHailData = Encoding.ASCII.GetBytes("Hi; I'm " + s_peer.GetHashCode());
if (source.RemoteHailData != null)
WriteToConsole("New status: " + source.Status + " - remote hail is: " + Encoding.ASCII.GetString(source.RemoteHailData));
else
WriteToConsole("New status: " + source.Status + " - remote hail is null");
break;
case NetMessageType.DebugMessage:
case NetMessageType.VerboseDebugMessage:
case NetMessageType.BadMessageReceived:
case NetMessageType.ConnectionRejected:
WriteToConsole(buffer.ReadString());
break;
case NetMessageType.Data:
WriteToConsole(source.RemoteEndpoint + " writes: " + buffer.ReadString());
break;
case NetMessageType.ServerDiscovered:
// discovered another peer!
s_peer.Connect(buffer.ReadIPEndPoint(), Encoding.ASCII.GetBytes("Hi; I'm " + s_peer.GetHashCode()));
break;
default:
// unhandled
break;
}
}
internal void Reset()
{
m_messageType = NetMessageType.LibraryError;
m_bitLength = 0;
m_isSent = false;
m_recyclingCount = 0;
m_fragmentGroup = 0;
}
internal void Reset()
{
m_messageType = NetMessageType.LibraryError;
m_bitLength = 0;
m_isSent = false;
NetException.Assert(m_recyclingCount == 0);
m_fragmentGroup = 0;
}
//private Byte[] recBuffer;
public NetMessage()
{
type = NetMessageType.NONE;
m_terminalID = "";
clientID = -1;
//bytes = 0;
msg = String.Empty;
//recBuffer = new Byte[256];
}
internal void Reset()
{
m_incomingMessageType = NetIncomingMessageType.Error;
m_readPosition = 0;
m_receivedMessageType = NetMessageType.LibraryError;
m_senderConnection = null;
m_bitLength = 0;
m_isFragment = false;
}
public void AddMessageHandler(NetMessageType messageType , Action<NetMessageType, NetIncomingMessage> handler)
{
if(!messagehandler.ContainsKey(messageType))
{
messagehandler[messageType] = new List<Action<NetMessageType,NetIncomingMessage>>();
messagehandler[messageType].Add(handler);
}
else
{
messagehandler[messageType].Add(handler);
}
}
// returns true if message should be rejected
internal bool ReceivedSequencedMessage(NetMessageType mtp, ushort seqNr)
{
int slot = (int)mtp - (int)NetMessageType.UserSequenced;
int diff = Relate(seqNr, m_lastReceivedSequenced[slot]);
if (diff == 0)
return true; // reject; already received
if (diff > (ushort.MaxValue / 2))
return true; // reject; out of window
m_lastReceivedSequenced[slot] = seqNr;
return false;
}
internal ushort GetSendSequenceNumber(NetMessageType mtp)
{
if (mtp < NetMessageType.UserSequenced)
return 0;
int slot = (int)mtp - (int)NetMessageType.UserSequenced;
int retval;
lock (m_nextSendSequenceNumber)
{
retval = m_nextSendSequenceNumber[slot];
if (retval == ushort.MaxValue)
retval = -1;
m_nextSendSequenceNumber[slot] = retval + 1;
}
return (ushort)retval;
}
void RecieveCreateNetworkObjectOnServer(NetMessageType NetMessageType, NetIncomingMessage NetIncomingMessage)
{
String ident = NetIncomingMessage.ReadString();
if (NetWorkObjects.ContainsKey(ident))
{
ServerIObject obj = NetWorkObjects[ident].CreateLoadObjectOrder(NetIncomingMessage);
world.AddObject(obj);
//skip the message type
NetIncomingMessage.Position = sizeof(short) * 8;
NetOutgoingMessage o = CreateMessage(NetWorking.NetMessageType.CreateNetworkObjectOnClient);
o.Write(obj.GetId());
NetOutgoingMessage mes = NetWorkObjects[ident].CreateRedistributeOrder(obj, NetIncomingMessage, o);
this.SendMessageToAllClients(mes,NetDeliveryMethod.ReliableOrdered);
}
}
public NetOutgoingMessage CreateMessage(NetMessageType messageType)
{
NetOutgoingMessage mes = server.CreateMessage();
mes.Write((short)messageType);
return mes;
}
private void ReceivedUnconnectedLibraryMessage(double now, IPEndPoint senderEndpoint, NetMessageType tp, int ptr, int payloadByteLength)
{
NetConnection shake;
if (m_handshakes.TryGetValue(senderEndpoint, out shake))
{
shake.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
//
// Library message from a completely unknown sender; lets just accept Connect
//
switch (tp)
{
case NetMessageType.Discovery:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.DiscoveryRequest))
{
NetIncomingMessage dm = CreateIncomingMessage(NetIncomingMessageType.DiscoveryRequest, payloadByteLength);
if (payloadByteLength > 0)
Buffer.BlockCopy(m_receiveBuffer, ptr, dm.m_data, 0, payloadByteLength);
dm.m_receiveTime = now;
dm.m_bitLength = payloadByteLength * 8;
dm.m_senderEndpoint = senderEndpoint;
ReleaseMessage(dm);
}
return;
case NetMessageType.DiscoveryResponse:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.DiscoveryResponse))
{
NetIncomingMessage dr = CreateIncomingMessage(NetIncomingMessageType.DiscoveryResponse, payloadByteLength);
if (payloadByteLength > 0)
Buffer.BlockCopy(m_receiveBuffer, ptr, dr.m_data, 0, payloadByteLength);
dr.m_receiveTime = now;
dr.m_bitLength = payloadByteLength * 8;
dr.m_senderEndpoint = senderEndpoint;
ReleaseMessage(dr);
}
return;
case NetMessageType.NatIntroduction:
HandleNatIntroduction(ptr);
return;
case NetMessageType.NatPunchMessage:
HandleNatPunch(ptr, senderEndpoint);
return;
case NetMessageType.Connect:
// proceed
break;
case NetMessageType.Disconnect:
// this is probably ok
LogVerbose("Received Disconnect from unconnected source: " + senderEndpoint);
return;
default:
LogWarning("Received unhandled library message " + tp + " from " + senderEndpoint);
return;
}
// It's someone wanting to shake hands with us!
int reservedSlots = m_handshakes.Count + m_connections.Count;
if (reservedSlots >= m_configuration.m_maximumConnections)
{
// server full
NetOutgoingMessage full = CreateMessage("Server full");
full.m_messageType = NetMessageType.Disconnect;
SendLibrary(full, senderEndpoint);
return;
}
// Ok, start handshake!
NetConnection conn = new NetConnection(this, senderEndpoint);
m_handshakes.Add(senderEndpoint, conn);
conn.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
private void ReceivedUnconnectedLibraryMessage(double now, IPEndPoint senderEndpoint, NetMessageType tp, int ptr, int payloadByteLength)
{
NetConnection shake;
if (m_handshakes.TryGetValue(senderEndpoint, out shake))
{
shake.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
//
// Library message from a completely unknown sender; lets just accept Connect
//
switch (tp)
{
case NetMessageType.Discovery:
HandleIncomingDiscoveryRequest(now, senderEndpoint, ptr, payloadByteLength);
return;
case NetMessageType.DiscoveryResponse:
HandleIncomingDiscoveryResponse(now, senderEndpoint, ptr, payloadByteLength);
return;
case NetMessageType.NatIntroduction:
HandleNatIntroduction(ptr);
return;
case NetMessageType.NatPunchMessage:
HandleNatPunch(ptr, senderEndpoint);
return;
case NetMessageType.ConnectResponse:
lock (m_handshakes)
{
foreach (var hs in m_handshakes)
{
if (hs.Key.Address.Equals(senderEndpoint.Address))
{
if (hs.Value.m_connectionInitiator)
{
//
// We are currently trying to connection to XX.XX.XX.XX:Y
// ... but we just received a ConnectResponse from XX.XX.XX.XX:Z
// Lets just assume the router decided to use this port instead
//
var hsconn = hs.Value;
m_connectionLookup.Remove(hs.Key);
m_handshakes.Remove(hs.Key);
LogDebug("Detected host port change; rerouting connection to " + senderEndpoint);
hsconn.MutateEndpoint(senderEndpoint);
m_connectionLookup.Add(senderEndpoint, hsconn);
m_handshakes.Add(senderEndpoint, hsconn);
hsconn.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
}
}
}
LogWarning("Received unhandled library message " + tp + " from " + senderEndpoint);
return;
case NetMessageType.Connect:
// proceed
break;
case NetMessageType.Disconnect:
// this is probably ok
LogVerbose("Received Disconnect from unconnected source: " + senderEndpoint);
return;
default:
LogWarning("Received unhandled library message " + tp + " from " + senderEndpoint);
return;
}
// It's someone wanting to shake hands with us!
int reservedSlots = m_handshakes.Count + m_connections.Count;
if (reservedSlots >= m_configuration.m_maximumConnections)
{
// server full
NetOutgoingMessage full = CreateMessage("Server full");
full.m_messageType = NetMessageType.Disconnect;
SendLibrary(full, senderEndpoint);
return;
}
// Ok, start handshake!
NetConnection conn = new NetConnection(this, senderEndpoint);
m_handshakes.Add(senderEndpoint, conn);
conn.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
private void HandleConnectResponse(double now, NetMessageType tp, int ptr, int payloadLength)
{
byte[] hail;
switch (m_status)
{
case NetConnectionStatus.InitiatedConnect:
// awesome
bool ok = ValidateHandshakeData(ptr, payloadLength, out hail);
if (ok)
{
if (hail != null)
{
m_remoteHailMessage = m_peer.CreateIncomingMessage(NetIncomingMessageType.Data, hail);
m_remoteHailMessage.LengthBits = (hail.Length * 8);
}
else
{
m_remoteHailMessage = null;
}
m_peer.AcceptConnection(this);
SendConnectionEstablished();
return;
}
break;
case NetConnectionStatus.RespondedConnect:
// hello, wtf?
break;
case NetConnectionStatus.Disconnecting:
case NetConnectionStatus.Disconnected:
case NetConnectionStatus.ReceivedInitiation:
case NetConnectionStatus.None:
// wtf? anyway, bye!
break;
case NetConnectionStatus.Connected:
// my ConnectionEstablished must have been lost, send another one
SendConnectionEstablished();
return;
}
}
private void ReceiveSocketData(double now)
{
int bytesReceived = m_socket.ReceiveFrom(m_receiveBuffer, 0, m_receiveBuffer.Length, SocketFlags.None, ref m_senderRemote);
if (bytesReceived < NetConstants.HeaderByteSize)
{
return;
}
//LogVerbose("Received " + bytesReceived + " bytes");
var ipsender = (NetEndPoint)m_senderRemote;
if (m_upnp != null && now < m_upnp.m_discoveryResponseDeadline && bytesReceived > 32)
{
// is this an UPnP response?
string resp = System.Text.Encoding.UTF8.GetString(m_receiveBuffer, 0, bytesReceived);
if (resp.Contains("upnp:rootdevice") || resp.Contains("UPnP/1.0"))
{
try
{
resp = resp.Substring(resp.ToLower().IndexOf("location:") + 9);
resp = resp.Substring(0, resp.IndexOf("\r")).Trim();
m_upnp.ExtractServiceUrl(resp);
return;
}
catch (Exception ex)
{
LogDebug("Failed to parse UPnP response: " + ex.ToString());
// don't try to parse this packet further
return;
}
}
}
NetConnection sender = null;
m_connectionLookup.TryGetValue(ipsender, out sender);
//
// parse packet into messages
//
int numMessages = 0;
int numFragments = 0;
int ptr = 0;
while ((bytesReceived - ptr) >= NetConstants.HeaderByteSize)
{
// decode header
// 8 bits - NetMessageType
// 1 bit - Fragment?
// 15 bits - Sequence number
// 16 bits - Payload length in bits
numMessages++;
NetMessageType tp = (NetMessageType)m_receiveBuffer[ptr++];
byte low = m_receiveBuffer[ptr++];
byte high = m_receiveBuffer[ptr++];
bool isFragment = ((low & 1) == 1);
ushort sequenceNumber = (ushort)((low >> 1) | (((int)high) << 7));
if (isFragment)
{
numFragments++;
}
ushort payloadBitLength = (ushort)(m_receiveBuffer[ptr++] | (m_receiveBuffer[ptr++] << 8));
int payloadByteLength = NetUtility.BytesToHoldBits(payloadBitLength);
if (bytesReceived - ptr < payloadByteLength)
{
LogWarning("Malformed packet; stated payload length " + payloadByteLength + ", remaining bytes " + (bytesReceived - ptr));
return;
}
if (tp >= NetMessageType.Unused1 && tp <= NetMessageType.Unused29)
{
ThrowOrLog("Unexpected NetMessageType: " + tp);
return;
}
try
{
if (tp >= NetMessageType.LibraryError)
{
if (sender != null)
{
sender.ReceivedLibraryMessage(tp, ptr, payloadByteLength);
}
else
{
ReceivedUnconnectedLibraryMessage(now, ipsender, tp, ptr, payloadByteLength);
}
}
else
{
if (sender == null && !m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.UnconnectedData))
{
return; // dropping unconnected message since it's not enabled
}
NetIncomingMessage msg = CreateIncomingMessage(NetIncomingMessageType.Data, payloadByteLength);
msg.m_isFragment = isFragment;
msg.m_receiveTime = now;
msg.m_sequenceNumber = sequenceNumber;
msg.m_receivedMessageType = tp;
msg.m_senderConnection = sender;
msg.m_senderEndPoint = ipsender;
msg.m_bitLength = payloadBitLength;
Buffer.BlockCopy(m_receiveBuffer, ptr, msg.m_data, 0, payloadByteLength);
if (sender != null)
{
if (tp == NetMessageType.Unconnected)
{
// We're connected; but we can still send unconnected messages to this peer
msg.m_incomingMessageType = NetIncomingMessageType.UnconnectedData;
ReleaseMessage(msg);
}
else
{
// connected application (non-library) message
sender.ReceivedMessage(msg);
}
}
else
{
// at this point we know the message type is enabled
// unconnected application (non-library) message
msg.m_incomingMessageType = NetIncomingMessageType.UnconnectedData;
ReleaseMessage(msg);
}
}
}
catch (Exception ex)
{
LogError("Packet parsing error: " + ex.Message + " from " + ipsender);
}
ptr += payloadByteLength;
}
m_statistics.PacketReceived(bytesReceived, numMessages, numFragments);
if (sender != null)
{
sender.m_statistics.PacketReceived(bytesReceived, numMessages, numFragments);
}
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
float now = (float)NetTime.Now;
switch (tp)
{
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i+=3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
NetSenderChannelBase chan = m_sendChannels[(int)acktp - 1];
if (chan == null)
chan = CreateSenderChannel(acktp);
//m_peer.LogVerbose("Received ack for " + acktp + "#" + seqNr);
chan.ReceiveAcknowledge(now, seqNr);
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
float now = (float)NetTime.Now;
switch (tp)
{
case NetMessageType.Connect:
m_peer.LogDebug("Received handshake message (" + tp + ") despite connection being in place");
break;
case NetMessageType.ConnectResponse:
// handshake message must have been lost
HandleConnectResponse(now, tp, ptr, payloadLength);
break;
case NetMessageType.ConnectionEstablished:
// do nothing, all's well
break;
case NetMessageType.LibraryError:
m_peer.ThrowOrLog("LibraryError received by ReceivedLibraryMessage; this usually indicates a malformed message");
break;
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i+=3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
// need to enqueue this and handle it in the netconnection heartbeat; so be able to send resends together with normal sends
m_queuedIncomingAcks.Enqueue(new NetTuple<NetMessageType, int>(acktp, seqNr));
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
if (m_peer.Configuration.AutoExpandMTU == false)
{
m_peer.LogDebug("Received ExpandMTURequest altho AutoExpandMTU is turned off!");
break;
}
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
case NetMessageType.NatIntroduction:
// Unusual situation where server is actually already known, but got a nat introduction - oh well, lets handle it as usual
m_peer.HandleNatIntroduction(ptr);
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}
/// <summary>
/// Read any received message in any connection queue
/// </summary>
public bool ReadMessage(
NetBuffer intoBuffer,
out NetMessageType type,
out NetConnection sender,
out IPEndPoint senderEndPoint)
{
if (intoBuffer == null)
throw new ArgumentNullException("intoBuffer");
if (m_receivedMessages.Count < 1)
{
sender = null;
senderEndPoint = null;
type = NetMessageType.None;
m_dataReceivedEvent.Reset();
return false;
}
IncomingNetMessage msg;
lock(m_receivedMessages)
msg = m_receivedMessages.Dequeue();
if (msg == null)
{
sender = null;
type = NetMessageType.None;
senderEndPoint = null;
return false;
}
#if DEBUG
if (msg.m_data == null)
throw new NetException("Ouch, no data!");
if (msg.m_data.Position != 0)
throw new NetException("Ouch, stale data!");
#endif
senderEndPoint = msg.m_senderEndPoint;
sender = msg.m_sender;
intoBuffer.Tag = msg.m_data.Tag;
//
// recycle NetMessage object and NetBuffer
//
NetBuffer content = msg.m_data;
msg.m_data = null;
type = msg.m_msgType;
// swap content of buffers
byte[] tmp = intoBuffer.Data;
intoBuffer.Data = content.Data;
if (tmp == null)
tmp = new byte[8]; // application must have lost it somehow
content.Data = tmp;
// set correct values for returning value (ignore the other, it's being recycled anyway)
intoBuffer.m_bitLength = content.m_bitLength;
intoBuffer.m_readPosition = 0;
// recycle message
// m_messagePool.Push(msg);
// recycle buffer
RecycleBuffer(content);
return true;
}
/// <summary>
/// Read any received message in any connection queue
/// </summary>
public bool ReadMessage(NetBuffer intoBuffer, out NetMessageType type, out NetConnection sender)
{
IPEndPoint senderEndPoint;
return ReadMessage(intoBuffer, out type, out sender, out senderEndPoint);
}
internal void QueueAck(NetMessageType tp, int sequenceNumber)
{
m_queuedOutgoingAcks.Enqueue(new NetTuple <NetMessageType, int>(tp, sequenceNumber));
}
private NetReceiverChannelBase CreateReceiverChannel(NetMessageType tp)
{
m_peer.VerifyNetworkThread();
// create receiver channel
NetReceiverChannelBase chan;
NetDeliveryMethod method = NetUtility.GetDeliveryMethod(tp);
switch (method)
{
case NetDeliveryMethod.Unreliable:
chan = new NetUnreliableUnorderedReceiver(this);
break;
case NetDeliveryMethod.ReliableOrdered:
chan = new NetReliableOrderedReceiver(this, NetConstants.ReliableOrderedWindowSize);
break;
case NetDeliveryMethod.UnreliableSequenced:
chan = new NetUnreliableSequencedReceiver(this);
break;
case NetDeliveryMethod.ReliableUnordered:
chan = new NetReliableUnorderedReceiver(this, NetConstants.ReliableOrderedWindowSize);
break;
case NetDeliveryMethod.ReliableSequenced:
chan = new NetReliableSequencedReceiver(this, NetConstants.ReliableSequencedWindowSize);
break;
default:
throw new NetException("Unhandled NetDeliveryMethod!");
}
int channelSlot = (int)tp - 1;
NetException.Assert(m_receiveChannels[channelSlot] == null);
m_receiveChannels[channelSlot] = chan;
return chan;
}
// may be on user thread
private NetSenderChannelBase CreateSenderChannel(NetMessageType tp)
{
NetSenderChannelBase chan;
lock (m_sendChannels)
{
NetDeliveryMethod method = NetUtility.GetDeliveryMethod(tp);
int sequenceChannel = (int)tp - (int)method;
int channelSlot = (int)method - 1 + sequenceChannel;
if (m_sendChannels[channelSlot] != null)
{
// we were pre-empted by another call to this method
chan = m_sendChannels[channelSlot];
}
else
{
switch (method)
{
case NetDeliveryMethod.Unreliable:
case NetDeliveryMethod.UnreliableSequenced:
chan = new NetUnreliableSenderChannel(this, NetUtility.GetWindowSize(method));
break;
case NetDeliveryMethod.ReliableOrdered:
chan = new NetReliableSenderChannel(this, NetUtility.GetWindowSize(method));
break;
case NetDeliveryMethod.ReliableSequenced:
case NetDeliveryMethod.ReliableUnordered:
default:
chan = new NetReliableSenderChannel(this, NetUtility.GetWindowSize(method));
break;
}
m_sendChannels[channelSlot] = chan;
}
}
return chan;
}
public NetMessage()
{
m_msgType = NetMessageType.Data;
}
private void Heartbeat()
{
VerifyNetworkThread();
double dnow = NetTime.Now;
float now = (float)dnow;
double delta = dnow - m_lastHeartbeat;
int maxCHBpS = 1250 - m_connections.Count;
if (maxCHBpS < 250)
{
maxCHBpS = 250;
}
if (delta > (1.0 / (double)maxCHBpS)) // max connection heartbeats/second max
{
m_frameCounter++;
m_lastHeartbeat = dnow;
// do handshake heartbeats
if ((m_frameCounter % 3) == 0)
{
foreach (var kvp in m_handshakes)
{
NetConnection conn = kvp.Value as NetConnection;
#if DEBUG
// sanity check
if (kvp.Key != kvp.Key)
{
LogWarning("Sanity fail! Connection in handshake list under wrong key!");
}
#endif
conn.UnconnectedHeartbeat(now);
if (conn.m_status == NetConnectionStatus.Connected || conn.m_status == NetConnectionStatus.Disconnected)
{
#if DEBUG
// sanity check
if (conn.m_status == NetConnectionStatus.Disconnected && m_handshakes.ContainsKey(conn.RemoteEndpoint))
{
LogWarning("Sanity fail! Handshakes list contained disconnected connection!");
m_handshakes.Remove(conn.RemoteEndpoint);
}
#endif
break; // collection has been modified
}
}
}
#if DEBUG
SendDelayedPackets();
#endif
// update m_executeFlushSendQueue
if (m_configuration.m_autoFlushSendQueue)
{
m_executeFlushSendQueue = true;
}
// do connection heartbeats
lock (m_connections)
{
foreach (NetConnection conn in m_connections)
{
conn.Heartbeat(now, m_frameCounter);
if (conn.m_status == NetConnectionStatus.Disconnected)
{
//
// remove connection
//
m_connections.Remove(conn);
m_connectionLookup.Remove(conn.RemoteEndpoint);
break; // can't continue iteration here
}
}
}
m_executeFlushSendQueue = false;
// send unsent unconnected messages
NetTuple <IPEndPoint, NetOutgoingMessage> unsent;
while (m_unsentUnconnectedMessages.TryDequeue(out unsent))
{
NetOutgoingMessage om = unsent.Item2;
bool connReset;
int len = om.Encode(m_sendBuffer, 0, 0);
SendPacket(len, unsent.Item1, 1, out connReset);
Interlocked.Decrement(ref om.m_recyclingCount);
if (om.m_recyclingCount <= 0)
{
Recycle(om);
}
}
}
//
// read from socket
//
if (m_socket == null)
{
return;
}
if (!m_socket.Poll(1000, SelectMode.SelectRead)) // wait up to 1 ms for data to arrive
{
return;
}
//if (m_socket == null || m_socket.Available < 1)
// return;
do
{
int bytesReceived = 0;
try
{
bytesReceived = m_socket.ReceiveFrom(m_receiveBuffer, 0, m_receiveBuffer.Length, SocketFlags.None, ref m_senderRemote);
}
catch (SocketException sx)
{
if (sx.SocketErrorCode == SocketError.ConnectionReset)
{
// connection reset by peer, aka connection forcibly closed aka "ICMP port unreachable"
// we should shut down the connection; but m_senderRemote seemingly cannot be trusted, so which connection should we shut down?!
// So, what to do?
LogWarning("ConnectionReset");
return;
}
LogWarning(sx.ToString());
return;
}
if (bytesReceived < NetConstants.HeaderByteSize)
{
return;
}
//LogVerbose("Received " + bytesReceived + " bytes");
IPEndPoint ipsender = (IPEndPoint)m_senderRemote;
if (ipsender.Port == 1900)
{
// UPnP response
try
{
string resp = System.Text.Encoding.ASCII.GetString(m_receiveBuffer, 0, bytesReceived);
if (resp.Contains("upnp:rootdevice"))
{
resp = resp.Substring(resp.ToLower().IndexOf("location:") + 9);
resp = resp.Substring(0, resp.IndexOf("\r")).Trim();
m_upnp.ExtractServiceUrl(resp);
return;
}
}
catch { }
}
NetConnection sender = null;
m_connectionLookup.TryGetValue(ipsender, out sender);
double receiveTime = NetTime.Now;
//
// parse packet into messages
//
int numMessages = 0;
int ptr = 0;
while ((bytesReceived - ptr) >= NetConstants.HeaderByteSize)
{
// decode header
// 8 bits - NetMessageType
// 1 bit - Fragment?
// 15 bits - Sequence number
// 16 bits - Payload length in bits
numMessages++;
NetMessageType tp = (NetMessageType)m_receiveBuffer[ptr++];
byte low = m_receiveBuffer[ptr++];
byte high = m_receiveBuffer[ptr++];
bool isFragment = ((low & 1) == 1);
ushort sequenceNumber = (ushort)((low >> 1) | (((int)high) << 7));
ushort payloadBitLength = (ushort)(m_receiveBuffer[ptr++] | (m_receiveBuffer[ptr++] << 8));
int payloadByteLength = NetUtility.BytesToHoldBits(payloadBitLength);
if (bytesReceived - ptr < payloadByteLength)
{
LogWarning("Malformed packet; stated payload length " + payloadByteLength + ", remaining bytes " + (bytesReceived - ptr));
return;
}
try
{
NetException.Assert(tp <NetMessageType.Unused1 || tp> NetMessageType.Unused29);
if (tp >= NetMessageType.LibraryError)
{
if (sender != null && tp != NetMessageType.NatIntroduction && tp != NetMessageType.NatPunchMessage)
{
sender.ReceivedLibraryMessage(tp, ptr, payloadByteLength);
}
else
{
ReceivedUnconnectedLibraryMessage(receiveTime, ipsender, tp, ptr, payloadByteLength);
}
}
else
{
if (sender == null && !m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.UnconnectedData))
{
return; // dropping unconnected message since it's not enabled
}
NetIncomingMessage msg = CreateIncomingMessage(NetIncomingMessageType.Data, payloadByteLength);
msg.m_isFragment = isFragment;
msg.m_receiveTime = receiveTime;
msg.m_sequenceNumber = sequenceNumber;
msg.m_receivedMessageType = tp;
msg.m_senderConnection = sender;
msg.m_senderEndpoint = ipsender;
msg.m_bitLength = payloadBitLength;
Buffer.BlockCopy(m_receiveBuffer, ptr, msg.m_data, 0, payloadByteLength);
if (sender != null)
{
if (tp == NetMessageType.Unconnected)
{
// We're connected; but we can still send unconnected messages to this peer
msg.m_incomingMessageType = NetIncomingMessageType.UnconnectedData;
ReleaseMessage(msg);
}
else
{
// connected application (non-library) message
sender.ReceivedMessage(msg);
}
}
else
{
// at this point we know the message type is enabled
// unconnected application (non-library) message
msg.m_incomingMessageType = NetIncomingMessageType.UnconnectedData;
ReleaseMessage(msg);
}
}
}
catch (Exception ex)
{
LogError("Packet parsing error: " + ex.Message + " from " + ipsender);
}
ptr += payloadByteLength;
}
m_statistics.PacketReceived(bytesReceived, numMessages);
if (sender != null)
{
sender.m_statistics.PacketReceived(bytesReceived, numMessages);
}
} while (m_socket.Available > 0);
}
private void ReceivedUnconnectedLibraryMessage(double now, NetEndPoint senderEndPoint, NetMessageType tp, int ptr, int payloadByteLength)
{
NetConnection shake;
if (m_handshakes.TryGetValue(senderEndPoint, out shake))
{
shake.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
//
// Library message from a completely unknown sender; lets just accept Connect
//
switch (tp)
{
case NetMessageType.Discovery:
HandleIncomingDiscoveryRequest(now, senderEndPoint, ptr, payloadByteLength);
return;
case NetMessageType.DiscoveryResponse:
HandleIncomingDiscoveryResponse(now, senderEndPoint, ptr, payloadByteLength);
return;
case NetMessageType.NatIntroduction:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.NatIntroductionSuccess))
{
HandleNatIntroduction(ptr);
}
return;
case NetMessageType.NatPunchMessage:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.NatIntroductionSuccess))
{
HandleNatPunch(ptr, senderEndPoint);
}
return;
case NetMessageType.NatIntroductionConfirmRequest:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.NatIntroductionSuccess))
{
HandleNatPunchConfirmRequest(ptr, senderEndPoint);
}
return;
case NetMessageType.NatIntroductionConfirmed:
if (m_configuration.IsMessageTypeEnabled(NetIncomingMessageType.NatIntroductionSuccess))
{
HandleNatPunchConfirmed(ptr, senderEndPoint);
}
return;
case NetMessageType.ConnectResponse:
lock (m_handshakes)
{
foreach (var hs in m_handshakes)
{
if (hs.Key.Address.Equals(senderEndPoint.Address))
{
if (hs.Value.m_connectionInitiator)
{
//
// We are currently trying to connection to XX.XX.XX.XX:Y
// ... but we just received a ConnectResponse from XX.XX.XX.XX:Z
// Lets just assume the router decided to use this port instead
//
var hsconn = hs.Value;
m_connectionLookup.Remove(hs.Key);
m_handshakes.Remove(hs.Key);
LogDebug("Detected host port change; rerouting connection to " + senderEndPoint);
hsconn.MutateEndPoint(senderEndPoint);
m_connectionLookup.Add(senderEndPoint, hsconn);
m_handshakes.Add(senderEndPoint, hsconn);
hsconn.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
}
}
}
}
LogWarning("Received unhandled library message " + tp + " from " + senderEndPoint);
return;
case NetMessageType.Connect:
if (m_configuration.AcceptIncomingConnections == false)
{
LogWarning("Received Connect, but we're not accepting incoming connections!");
return;
}
// handle connect
// It's someone wanting to shake hands with us!
int reservedSlots = m_handshakes.Count + m_connections.Count;
if (reservedSlots >= m_configuration.m_maximumConnections)
{
// server full
NetOutgoingMessage full = CreateMessage("Server full");
full.m_messageType = NetMessageType.Disconnect;
SendLibrary(full, senderEndPoint);
return;
}
// Ok, start handshake!
NetConnection conn = new NetConnection(this, senderEndPoint);
conn.m_status = NetConnectionStatus.ReceivedInitiation;
m_handshakes.Add(senderEndPoint, conn);
conn.ReceivedHandshake(now, tp, ptr, payloadByteLength);
return;
case NetMessageType.Disconnect:
// this is probably ok
LogVerbose("Received Disconnect from unconnected source: " + senderEndPoint);
return;
default:
LogWarning("Received unhandled library message " + tp + " from " + senderEndPoint);
return;
}
}
void HandleEchoMessage(NetMessageType NetMessageType, NetIncomingMessage NetIncomingMessage)
{
String ident = NetIncomingMessage.ReadString();
long unique = NetIncomingMessage.ReadInt64();
if(NetWorkEcho.ContainsKey(ident))
{
NetOutgoingMessage o = CreateMessage(NetWorking.NetMessageType.Echo);
o.Write(ident);
o.Write(unique);
SendMessageToAllClients(NetWorkEcho[ident].AnswerMessage(NetIncomingMessage,o),NetDeliveryMethod.ReliableOrdered);
}
}
internal static NetDeliveryMethod GetDeliveryMethod(NetMessageType mtp)
{
if (mtp >= NetMessageType.UserReliableOrdered1)
return NetDeliveryMethod.ReliableOrdered;
else if (mtp >= NetMessageType.UserReliableSequenced1)
return NetDeliveryMethod.ReliableSequenced;
else if (mtp >= NetMessageType.UserReliableUnordered)
return NetDeliveryMethod.ReliableUnordered;
else if (mtp >= NetMessageType.UserSequenced1)
return NetDeliveryMethod.UnreliableSequenced;
return NetDeliveryMethod.Unreliable;
}
internal void ReceivedHandshake(double now, NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
byte[] hail;
switch (tp)
{
case NetMessageType.Connect:
if (m_status == NetConnectionStatus.None)
{
// Whee! Server full has already been checked
bool ok = ValidateHandshakeData(ptr, payloadLength, out hail);
if (ok)
{
if (hail != null)
{
m_remoteHailMessage = m_peer.CreateIncomingMessage(NetIncomingMessageType.Data, hail);
m_remoteHailMessage.LengthBits = (hail.Length * 8);
}
else
{
m_remoteHailMessage = null;
}
if (m_peerConfiguration.IsMessageTypeEnabled(NetIncomingMessageType.ConnectionApproval))
{
// ok, let's not add connection just yet
NetIncomingMessage appMsg = m_peer.CreateIncomingMessage(NetIncomingMessageType.ConnectionApproval, (m_remoteHailMessage == null ? 0 : m_remoteHailMessage.LengthBytes));
appMsg.m_receiveTime = now;
appMsg.m_senderConnection = this;
appMsg.m_senderEndpoint = this.m_remoteEndpoint;
if (m_remoteHailMessage != null)
appMsg.Write(m_remoteHailMessage.m_data, 0, m_remoteHailMessage.LengthBytes);
m_peer.ReleaseMessage(appMsg);
return;
}
SendConnectResponse((float)now, true);
}
return;
}
if (m_status == NetConnectionStatus.RespondedConnect)
{
// our ConnectResponse must have been lost
SendConnectResponse((float)now, true);
return;
}
m_peer.LogDebug("Unhandled Connect: " + tp + ", status is " + m_status + " length: " + payloadLength);
break;
case NetMessageType.ConnectResponse:
switch (m_status)
{
case NetConnectionStatus.InitiatedConnect:
// awesome
bool ok = ValidateHandshakeData(ptr, payloadLength, out hail);
if (ok)
{
if (hail != null)
{
m_remoteHailMessage = m_peer.CreateIncomingMessage(NetIncomingMessageType.Data, hail);
m_remoteHailMessage.LengthBits = (hail.Length * 8);
}
else
{
m_remoteHailMessage = null;
}
m_peer.AcceptConnection(this);
SendConnectionEstablished();
return;
}
break;
case NetConnectionStatus.RespondedConnect:
// hello, wtf?
break;
case NetConnectionStatus.Disconnecting:
case NetConnectionStatus.Disconnected:
case NetConnectionStatus.None:
// wtf? anyway, bye!
break;
case NetConnectionStatus.Connected:
// my ConnectionEstablished must have been lost, send another one
SendConnectionEstablished();
return;
}
break;
case NetMessageType.ConnectionEstablished:
switch (m_status)
{
case NetConnectionStatus.Connected:
// ok...
break;
case NetConnectionStatus.Disconnected:
case NetConnectionStatus.Disconnecting:
case NetConnectionStatus.None:
// too bad, almost made it
break;
case NetConnectionStatus.InitiatedConnect:
// weird, should have been ConnectResponse...
break;
case NetConnectionStatus.RespondedConnect:
// awesome
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
InitializeRemoteTimeOffset(msg.ReadSingle());
m_peer.AcceptConnection(this);
InitializePing();
SetStatus(NetConnectionStatus.Connected, "Connected to " + NetUtility.ToHexString(m_remoteUniqueIdentifier));
return;
}
break;
case NetMessageType.Disconnect:
// ouch
string reason = "Ouch";
try
{
NetIncomingMessage inc = m_peer.SetupReadHelperMessage(ptr, payloadLength);
reason = inc.ReadString();
}
catch
{
}
ExecuteDisconnect(reason, false);
break;
case NetMessageType.Discovery:
m_peer.HandleIncomingDiscoveryRequest(now, m_remoteEndpoint, ptr, payloadLength);
return;
case NetMessageType.DiscoveryResponse:
m_peer.HandleIncomingDiscoveryResponse(now, m_remoteEndpoint, ptr, payloadLength);
return;
case NetMessageType.Ping:
// silently ignore
return;
default:
m_peer.LogDebug("Unhandled type during handshake: " + tp + " length: " + payloadLength);
break;
}
}
/// <summary>
/// Handle incoming message
/// </summary>
private void HandleMessage(NetMessageType type, NetBuffer buffer)
{
switch (type)
{
case NetMessageType.DebugMessage:
//
// it's a library debug message; just display it in the console if debugger is attached
//
Console.WriteLine(buffer.ReadString());
break;
case NetMessageType.StatusChanged:
//
// it's a status change message; set the reason as window title and refresh picture
//
this.Text = buffer.ReadString();
pictureBox1.Refresh();
break;
case NetMessageType.ServerDiscovered:
//
// it's a server discovered message; connect to the discovered server
//
m_imageWidth = 0;
m_imageHeight = 0;
m_lineDisplayed = 0;
m_client.Connect(buffer.ReadIPEndPoint());
break;
case NetMessageType.Data:
//
// it's a data message (data sent from the server)
//
if (m_imageWidth == 0)
{
// first message is size
m_imageWidth = (int)buffer.ReadVariableUInt32();
m_imageHeight = (int)buffer.ReadVariableUInt32();
this.Size = new System.Drawing.Size(m_imageWidth + 40, m_imageHeight + 60);
pictureBox1.Image = new Bitmap(m_imageWidth, m_imageHeight);
pictureBox1.SetBounds(12, 12, m_imageWidth, m_imageHeight);
return;
}
uint pixelPos = buffer.ReadUInt32();
// it's color data
int y = (int)(pixelPos / m_imageWidth);
int x = (int)(pixelPos - (y * m_imageWidth));
Bitmap bm = pictureBox1.Image as Bitmap;
pictureBox1.SuspendLayout();
int pixels = (buffer.LengthBytes - 4) / 3;
for (int i = 0; i < pixels; i++)
{
// set pixel
byte r = buffer.ReadByte();
byte g = buffer.ReadByte();
byte b = buffer.ReadByte();
Color col = Color.FromArgb(r, g, b);
if (y > m_imageHeight)
continue;
bm.SetPixel(x, y, col);
x++;
if (x >= m_imageWidth)
{
x = 0;
y++;
}
}
pictureBox1.ResumeLayout();
// refresh image every horizontal line
if (pixelPos / m_imageWidth > m_lineDisplayed)
{
m_lineDisplayed = (int)(pixelPos / m_imageWidth);
pictureBox1.Refresh();
}
break;
default:
// unhandled
break;
}
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
float now = (float)NetTime.Now;
switch (tp)
{
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i+=3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
// need to enqueue this and handle it in the netconnection heartbeat; so be able to send resends together with normal sends
m_queuedIncomingAcks.Enqueue(new NetTuple<NetMessageType, int>(acktp, seqNr));
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
case NetMessageType.NatIntroduction:
// Unusual situation where server is actually already known, but got a nat introduction - oh well, lets handle it as usual
m_peer.HandleNatIntroduction(ptr);
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}
/*
/// <summary>
/// Read any received message in any connection queue
/// </summary>
public NetBuffer ReadMessage(out NetConnection sender)
{
if (m_receivedMessages.Count < 1)
{
sender = null;
return null;
}
NetMessage msg = m_receivedMessages.Dequeue();
sender = msg.m_sender;
NetBuffer retval = msg.m_data;
msg.m_data = null;
m_messagePool.Push(msg);
Debug.Assert(retval.Position == 0);
return retval;
}
*/
/// <summary>
/// Read any received message in any connection queue
/// </summary>
public bool ReadMessage(
NetBuffer intoBuffer,
IList<NetConnection> onlyFor,
bool includeNullConnectionMessages,
out NetMessageType type,
out NetConnection sender)
{
if (m_receivedMessages.Count < 1)
{
sender = null;
type = NetMessageType.None;
m_dataReceivedEvent.Reset();
return false;
}
IncomingNetMessage msg = null;
lock (m_receivedMessages)
{
int sz = m_receivedMessages.Count;
for (int i = 0; i < sz; i++)
{
msg = m_receivedMessages.Peek(i);
if (msg != null)
{
if ((msg.m_sender == null && includeNullConnectionMessages) ||
onlyFor.Contains(msg.m_sender))
{
m_receivedMessages.Dequeue(i);
break;
}
msg = null;
}
}
}
if (msg == null)
{
sender = null;
type = NetMessageType.None;
return false;
}
sender = msg.m_sender;
// recycle NetMessage object
NetBuffer content = msg.m_data;
msg.m_data = null;
type = msg.m_msgType;
// m_messagePool.Push(msg);
Debug.Assert(content.Position == 0);
// swap content of buffers
byte[] tmp = intoBuffer.Data;
intoBuffer.Data = content.Data;
content.Data = tmp;
// set correct values for returning value (ignore the other, it's being recycled anyway)
intoBuffer.m_bitLength = content.m_bitLength;
intoBuffer.m_readPosition = 0;
// recycle NetBuffer object (incl. old intoBuffer byte array)
RecycleBuffer(content);
return true;
}
internal void QueueAck(NetMessageType tp, int sequenceNumber)
{
m_queuedOutgoingAcks.Enqueue(new NetTuple<NetMessageType, int>(tp, sequenceNumber));
}
// received a library message while Connected
internal void ReceivedLibraryMessage(NetMessageType tp, int ptr, int payloadLength)
{
m_peer.VerifyNetworkThread();
double now = NetTime.Now;
switch (tp)
{
case NetMessageType.Connect:
m_peer.LogDebug("Received handshake message (" + tp + ") despite connection being in place");
break;
case NetMessageType.ConnectResponse:
// handshake message must have been lost
HandleConnectResponse(now, tp, ptr, payloadLength);
break;
case NetMessageType.ConnectionEstablished:
// do nothing, all's well
break;
case NetMessageType.LibraryError:
m_peer.ThrowOrLog("LibraryError received by ReceivedLibraryMessage; this usually indicates a malformed message");
break;
case NetMessageType.Disconnect:
NetIncomingMessage msg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
m_disconnectRequested = true;
m_disconnectMessage = msg.ReadString();
m_disconnectReqSendBye = false;
//ExecuteDisconnect(msg.ReadString(), false);
break;
case NetMessageType.Acknowledge:
for (int i = 0; i < payloadLength; i += 3)
{
NetMessageType acktp = (NetMessageType)m_peer.m_receiveBuffer[ptr++]; // netmessagetype
int seqNr = m_peer.m_receiveBuffer[ptr++];
seqNr |= (m_peer.m_receiveBuffer[ptr++] << 8);
// need to enqueue this and handle it in the netconnection heartbeat; so be able to send resends together with normal sends
m_queuedIncomingAcks.Enqueue(new NetTuple <NetMessageType, int>(acktp, seqNr));
}
break;
case NetMessageType.Ping:
int pingNr = m_peer.m_receiveBuffer[ptr++];
SendPong(pingNr);
break;
case NetMessageType.Pong:
NetIncomingMessage pmsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int pongNr = pmsg.ReadByte();
float remoteSendTime = pmsg.ReadSingle();
ReceivedPong(now, pongNr, remoteSendTime);
break;
case NetMessageType.ExpandMTURequest:
SendMTUSuccess(payloadLength);
break;
case NetMessageType.ExpandMTUSuccess:
if (m_peer.Configuration.AutoExpandMTU == false)
{
m_peer.LogDebug("Received ExpandMTURequest altho AutoExpandMTU is turned off!");
break;
}
NetIncomingMessage emsg = m_peer.SetupReadHelperMessage(ptr, payloadLength);
int size = emsg.ReadInt32();
HandleExpandMTUSuccess(now, size);
break;
case NetMessageType.NatIntroduction:
// Unusual situation where server is actually already known, but got a nat introduction - oh well, lets handle it as usual
m_peer.HandleNatIntroduction(ptr);
break;
default:
m_peer.LogWarning("Connection received unhandled library message: " + tp);
break;
}
}