public void ProcessSyncRq(StandardSyncRqTunnelPacket packet)
{
lock (_syncRqLock)
{
Logger.Debug("Got a sync request for " + Id + " from " + packet.ip + ", last sync packet was from " + (_lastSyncRqPacketIp == null ? "nowhere" : _lastSyncRqPacketIp.ToString()));
if (_lastSyncRqPacketIp == null || _lastSyncRqPacketIp.Equals(packet.ip))
{
if (_expectedPeer.EndPoints.Contains(packet.ip))
{
_lastSyncRqPacketIp = packet.ip;
_syncRqEvent.Set();
StandardSyncRsTunnelPacket syncRs = new StandardSyncRsTunnelPacket();
byte[] syncBytes = syncRs.getBytes();
_udpClient.Send(syncBytes, syncBytes.Length, packet.ip);
}
else
{
Logger.Error("Tunnel " + Id + ", got a sync request from an unexpected peer [" + packet.ip +
", not " + _expectedPeer + "], dropping");
}
}
else
{
Logger.Debug("Received a sync request packet for " + Id + " from " + packet.ip +
" after we have already received our first one from " + _lastSyncRqPacketIp +
", ignoring");
}
}
}
public BasicTunnelPacket getPacket(byte[] bytes, IPEndPoint ip)
{
BasicTunnelPacket packet;
switch (bytes[BasicTunnelPacket.PKT_POS_TYPE])
{
case BasicTunnelPacket.PKT_TYPE_PING:
packet = new StandardPingTunnelPacket();
break;
case BasicTunnelPacket.PKT_TYPE_PONG:
packet = new StandardPongTunnelPacket();
break;
case BasicTunnelPacket.PKT_TYPE_SYNC_RS:
packet = new StandardSyncRsTunnelPacket();
break;
case BasicTunnelPacket.PKT_TYPE_SYNC_RQ:
packet = new StandardSyncRqTunnelPacket();
break;
case BasicTunnelPacket.PKT_TYPE_WAVE_RS:
packet = new StandardWaveTunnelRsPacket();
break;
case BasicTunnelPacket.PKT_TYPE_WAVE_RQ:
packet = new StandardWaveTunnelRqPacket();
break;
case BasicTunnelPacket.PKT_TYPE_DATA:
packet = new StandardTunnelDataPacket();
break;
case BasicTunnelPacket.PKT_TYPE_NOP:
packet = new StandardTunnelNopPacket();
break;
case BasicTunnelPacket.PKT_TYPE_CLOSE:
packet = new StandardCloseTunnelPacket();
break;
default:
throw new UnknownPacketException("Failed to determine packet type [" + bytes[BasicTunnelPacket.PKT_POS_TYPE] + "]");
}
packet.processPacket(bytes, ip);
return packet;
}
public void ProcessSyncRs(StandardSyncRsTunnelPacket packet)
{
lock (_syncRsLock)
{
Logger.Debug("Got a sync response for " + Id + " from " + packet.ip);
if (_lastSyncPacketIp == null || _lastSyncPacketIp.Equals(packet.ip))
{
_lastSyncPacketIp = packet.ip;
_syncEvent.Set();
}
else
{
Logger.Debug("Received a sync response packet for " + Id + " from " + packet.ip +
" after we have already received our first one from " + _lastSyncPacketIp +
", ignoring");
}
}
}
