/// <summary>
/// Raise PacketReceivedEvent.
/// </summary>
/// <param name="guid">The <see cref="Guid"/>.</param>
/// <param name="packet">The <see cref="PacketData"/>.</param>
public void RaiseEvent(Guid guid, PacketData packet)
{
if (PacketReceivedEvent != null)
{
PacketReceivedEvent.Invoke(guid, packet);
}
}
/// <summary>
/// Handles the data received event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EnergonSoftware.Core.Net.Sessions.DataReceivedEventArgs" /> instance containing the event data.</param>
private async void DataReceivedEventHandler(object sender, DataReceivedEventArgs e)
{
IPacket packet;
await SessionReceiveBuffer.LockAsync().ConfigureAwait(false);
try {
SessionReceiveBuffer.Flip();
Logger.Debug("Attempting to parse a packet...");
packet = await new PacketReader().ReadAsync(PacketFactory, SessionReceiveBuffer).ConfigureAwait(false);
if (null == packet)
{
Logger.Debug("No packet available!");
SessionReceiveBuffer.Reset();
return;
}
await SessionReceiveBuffer.CompactAsync().ConfigureAwait(false);
} finally {
SessionReceiveBuffer.Release();
}
Logger.Debug($"{packet.Type} packet successfully parsed with ContentType={packet.ContentType}");
PacketReceivedEvent?.Invoke(this, new PacketReceivedEventArgs
{
Packet = packet
}
);
}
private static void ProcessIncomingQueue(Packet packet)
{
PacketReceivedEvent?.Invoke(packet.GetPacket(), packet.GetLength());
PacketHandler handler = IncomingPacketHandlers.GetHandler(packet.GetPacketID());
int length = _getPacketLength(packet.GetPacketID());
handler?.OnReceive?.Invoke(new PacketReader(packet.GetPacket(), packet.GetLength(), length > 0));
PacketWaitEntries.CheckWait(packet.GetPacket(), PacketDirection.Incoming);
}
private static void ProcessIncomingQueue(Packet packet)
{
try
{
PacketReceivedEvent?.Invoke(packet.GetPacket(), packet.GetLength());
PacketHandler handler = IncomingPacketHandlers.GetHandler(packet.GetPacketID());
int length = _getPacketLength(packet.GetPacketID());
handler?.OnReceive?.Invoke(new PacketReader(packet.GetPacket(), packet.GetLength(), length > 0));
PacketWaitEntries.CheckWait(packet.GetPacket(), PacketDirection.Incoming);
}
catch (Exception e)
{
e.ToExceptionless().SetProperty("Packet", packet.GetPacket())
.SetProperty("Player", Player.ToString()).SetProperty("WorldItemCount", Items.Count())
.SetProperty("WorldMobileCount", Mobiles.Count()).Submit();
}
}
/// <summary>
/// Receives and unpacks an OSC packet.
/// A <see cref="OSCPacket"/>
/// </summary>
private void Receive()
{
IPEndPoint ip = null;
try
{
byte[] bytes = _udpClient.Receive(ref ip);
if (bytes.Length > 0)
{
var packet = OSCPacket.Unpack(bytes);
_lastReceivedPacket = packet;
PacketReceivedEvent?.Invoke(this, _lastReceivedPacket);
}
}
catch {
throw new Exception(String.Format("Can't create server at port {0}", _localPort));
}
}
/* Raises a PacketReceivedEvent if someone has subscribed to it */
private void RaisePacketReceived(ACReceivedEventArgs args)
{
PacketReceivedEvent?.Invoke(this, args);
}
/// <summary>
/// Fire
/// </summary>
/// <param name="buffer"></param>
private void ExecuteReturnPacket(object buffer)
{
_OnPacketReceivedEvent?.Invoke((byte[])buffer);
}
private void PacketReceiverThread(object param)
{
IgeNetStream stream = (IgeNetStream)param;
Log(LogLevel.Debug, "PacketReceiverThread: start");
try {
using (BinaryReader reader = new BinaryReader(stream)) {
Packet packet;
uint packetId, checksum, checksum2;
((IgeNetStream)reader.BaseStream).CalculateChecksums = true;
while (true)
{
// Log(LogLevel.Debug, "PacketReceiverThread: resetting read checksum");
// stream.ResetReadChecksum();
//Thread.MemoryBarrier();
Log(LogLevel.Debug, "PacketReceiverThread: reading packet id");
packetId = reader.ReadUInt32();
Log(LogLevel.Debug, "PacketReceiverThread: creating packet 0x{0:X8} instance", packetId);
packet = Packet.CreateInstance(packetId);
switch (packet.Encryption)
{
case PacketEncryptionMethod.RSA: {
int cryptoSize = reader.ReadInt32();
Log(LogLevel.Debug, "PacketReceiverThread: deserializing packet 0x{0:X8} from an RSA encrypted block ({1} bytes)", packetId, cryptoSize);
using (BinaryReader cryptoReader = new BinaryReader(new MemoryStream(m_RSACryptoPrivate.Decrypt(reader.ReadBytes(cryptoSize), false)), Encoding.Unicode)) {
packet.Deserialize(cryptoReader);
}
break;
}
case PacketEncryptionMethod.Rijndael: {
int cryptoSize = reader.ReadInt32();
Log(LogLevel.Debug, "PacketReceiverThread: deserializing packet 0x{0:X8} from a Rijndael crypto stream ({1} bytes)", packetId, cryptoSize);
using (MemoryStream mem = new MemoryStream(reader.ReadBytes(cryptoSize))) {
using (BinaryReader cryptoReader = new BinaryReader(new CryptoStream(mem, m_RijCrypto.CreateDecryptor(), CryptoStreamMode.Read), Encoding.Unicode)) {
packet.Deserialize(cryptoReader);
}
}
break;
}
default: {
Log(LogLevel.Debug, "PacketReceiverThread: deserializing packet 0x{0:X8} from a read stream", packetId);
packet.Deserialize(reader);
break;
}
}
if (GameDebugger.MinNetLogLevel <= LogLevel.VerboseDebug)
{
Log(LogLevel.VerboseDebug, "PacketReceiverThread: received packet '{0}'. Packet contents: {1}", packet.GetType().FullName, packet.ToString());
}
else
{
Log(LogLevel.Debug, "PacketReceiverThread: received packet '{0}'", packet.GetType().FullName);
}
//Thread.MemoryBarrier();
// packet.Deserialize(reader);
checksum = stream.ReadChecksum ^ unchecked (m_ReceivePacketSerial++);
//Thread.MemoryBarrier();
checksum2 = reader.ReadUInt32();
//Thread.MemoryBarrier();
Log(LogLevel.Debug, "PacketReceiverThread: comparing checksums (calculated=0x{0:X8}; received=0x{1:X8})", checksum, checksum2);
if (checksum != checksum2)
{
Disconnect();
throw new UserFriendlyException("The protocol might be broken or some packet serializer and deserializer don't match each other.", "Connection error");
}
MethodInfo method;
if (packet is RSAServerPublicKeyPacket || packet is RSAClientPublicKeyPacket || packet is RijndaelEncryptionKeyPacket)
{
Log(LogLevel.Debug, "PacketReceiverThread: searching for handler method in IGE.Net.Client");
method = typeof(Client).GetMethod("OnPacketReceived", BindingFlags.ExactBinding | BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { packet.GetType() }, null);
}
else
{
m_CanProcessPackets.WaitOne(); // block any non encryption key exchange packets
Log(LogLevel.Debug, "PacketReceiverThread: searching for handler method in derived class");
method = GetType().GetMethod("OnPacketReceived", BindingFlags.ExactBinding | BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { packet.GetType() }, null);
}
if (method != null)
{
Log(LogLevel.Debug, "PacketReceiverThread: invoking custom packet received event");
method.Invoke(this, new object[] { packet });
}
else
{
Log(LogLevel.Debug, "PacketReceiverThread: invoking default packet received event");
OnPacketReceived(packet);
}
if (PacketReceivedEvent != null)
{
PacketReceivedEvent.Invoke(this, new PacketReceivedEventArgs(packet));
}
}
}
}
catch (Exception ex) {
Log(LogLevel.Debug, "PacketReceiverThread exception: {0}", ex.ToString());
}
finally {
stream.Dispose();
}
Log(LogLevel.Debug, "PacketReceiverThread: end");
}