public virtual void InPacket(Packet NewPack)
{
// Handle appended ACKs
if (NewPack.Header.AppendedAcks)
{
lock (NeedAck)
{
foreach (uint ack in NewPack.Header.AckList)
{
NeedAck.Remove(ack);
}
}
}
// Handle PacketAck packets
if (NewPack.Type == PacketType.PacketAck)
{
PacketAckPacket ackPacket = (PacketAckPacket)NewPack;
lock (NeedAck)
{
foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
{
NeedAck.Remove(block.ID);
}
}
}
else if ((NewPack.Type == PacketType.StartPingCheck))
{
//reply to pingcheck
libsecondlife.Packets.StartPingCheckPacket startPing = (libsecondlife.Packets.StartPingCheckPacket)NewPack;
libsecondlife.Packets.CompletePingCheckPacket endPing = new CompletePingCheckPacket();
endPing.PingID.PingID = startPing.PingID.PingID;
OutPacket(endPing);
}
else
{
QueItem item = new QueItem();
item.Packet = NewPack;
item.Incoming = true;
this.PacketQueue.Enqueue(item);
}
}
/// <summary>
/// Callback handler for incomming data
/// </summary>
/// <param name="result"></param>
private void OnReceivedData(IAsyncResult result)
{
ipeSender = new IPEndPoint(IPAddress.Any, 0);
epSender = (EndPoint)ipeSender;
Packet packet = null;
int numBytes;
// If we're receiving data the sim connection is open
connected = true;
// Update the disconnect flag so this sim doesn't time out
DisconnectCandidate = false;
NetworkInfo User_info = null;
lock (RecvBuffer)
{
// Retrieve the incoming packet
try
{
numBytes = Connection.EndReceiveFrom(result, ref epSender);
//find user_agent_info
int packetEnd = numBytes - 1;
packet = Packet.BuildPacket(RecvBuffer, ref packetEnd, ZeroBuffer);
//should check if login/useconnection packet first
if (packet.Type == PacketType.UseCircuitCode)
{
//new connection
//TODO check that this circuit and session is expected
UseCircuitCodePacket cir_pack = (UseCircuitCodePacket)packet;
NetworkInfo new_user = new NetworkInfo();
new_user.CircuitCode = cir_pack.CircuitCode.Code;
new_user.User.AgentID = cir_pack.CircuitCode.ID;
new_user.User.SessionID = cir_pack.CircuitCode.SessionID;
new_user.endpoint = epSender;
new_user.Inbox = new Queue <uint>(Settings.INBOX_SIZE);
new_user.Connection = new ClientConnection();
new_user.Connection.NetInfo = new_user;
new_user.Connection.Start();
//this.CallbackObject.NewUserCallback(new_user);
this.User_agents.Add(new_user);
}
NetworkInfo temp_agent = null;
IPEndPoint send_ip = (IPEndPoint)epSender;
// this.callback_object.error("incoming: address is "+send_ip.Address +"port number is: "+send_ip.Port.ToString());
for (int ii = 0; ii < this.User_agents.Count; ii++)
{
temp_agent = (NetworkInfo)this.User_agents[ii];
IPEndPoint ag_ip = (IPEndPoint)temp_agent.endpoint;
//this.callback_object.error("searching: address is "+ag_ip.Address +"port number is: "+ag_ip.Port.ToString());
if ((ag_ip.Address.ToString() == send_ip.Address.ToString()) && (ag_ip.Port.ToString() == send_ip.Port.ToString()))
{
//this.callback_object.error("found user");
User_info = temp_agent;
break;
}
}
Connection.BeginReceiveFrom(RecvBuffer, 0, RecvBuffer.Length, SocketFlags.None, ref epSender, ReceivedData, null);
}
catch (SocketException)
{
// Client.Log(endPoint.ToString() + " socket is closed, shutting down " + this.Region.Name,
// Helpers.LogLevel.Info);
connected = false;
//Network.DisconnectSim(this);
return;
}
}
if (User_info == null)
{
//error finding agent
//this.CallbackObject.ErrorCallback("no user found");
return;
}
// Fail-safe check
if (packet == null)
{
//this.CallbackObject.ErrorCallback("couldn't build packet");
// Client.Log("Couldn't build a message from the incoming data", Helpers.LogLevel.Warning);
return;
}
//this.callback_object.error("past tests");
// Track the sequence number for this packet if it's marked as reliable
if (packet.Header.Reliable)
{
if (User_info.PendingAcks.Count > Settings.MAX_PENDING_ACKS)
{
SendAcks(User_info);
}
// Check if we already received this packet
if (User_info.Inbox.Contains(packet.Header.Sequence))
{
//Client.Log("Received a duplicate " + packet.Type.ToString() + ", sequence=" +
// packet.Header.Sequence + ", resent=" + ((packet.Header.Resent) ? "Yes" : "No") +
// ", Inbox.Count=" + Inbox.Count + ", NeedAck.Count=" + NeedAck.Count,
// Helpers.LogLevel.Info);
// Send an ACK for this packet immediately
//SendAck(packet.Header.Sequence);
// TESTING: Try just queuing up ACKs for resent packets instead of immediately triggering an ACK
lock (User_info.PendingAcks)
{
uint sequence = (uint)packet.Header.Sequence;
if (!User_info.PendingAcks.ContainsKey(sequence))
{
User_info.PendingAcks[sequence] = sequence;
}
}
// Avoid firing a callback twice for the same packet
// this.callback_object.error("avoiding callback");
return;
}
else
{
lock (User_info.PendingAcks)
{
uint sequence = (uint)packet.Header.Sequence;
if (!User_info.PendingAcks.ContainsKey(sequence))
{
User_info.PendingAcks[sequence] = sequence;
}
}
}
}
// Add this packet to our inbox
lock (User_info.Inbox)
{
while (User_info.Inbox.Count >= Settings.INBOX_SIZE)
{
User_info.Inbox.Dequeue();
}
User_info.Inbox.Enqueue(packet.Header.Sequence);
}
// Handle appended ACKs
if (packet.Header.AppendedAcks)
{
lock (User_info.NeedAck)
{
foreach (uint ack in packet.Header.AckList)
{
User_info.NeedAck.Remove(ack);
}
}
}
// Handle PacketAck packets
if (packet.Type == PacketType.PacketAck)
{
PacketAckPacket ackPacket = (PacketAckPacket)packet;
lock (User_info.NeedAck)
{
foreach (PacketAckPacket.PacketsBlock block in ackPacket.Packets)
{
User_info.NeedAck.Remove(block.ID);
}
}
}
//if it is a ping check send return
if ((packet.Type == PacketType.StartPingCheck))
{
//reply to pingcheck
libsecondlife.Packets.StartPingCheckPacket startPing = (libsecondlife.Packets.StartPingCheckPacket)packet;
libsecondlife.Packets.CompletePingCheckPacket endPing = new CompletePingCheckPacket();
endPing.PingID.PingID = startPing.PingID.PingID;
SendPacket(endPing, true, User_info);
}
else if (packet.Type != PacketType.PacketAck)
{
User_info.Connection.InQueue.Enqueue(packet);
}
}
