private void PendingConnectionsTimeoutPulse()
 {
     while (IsActive)
     {
         for (var i = 0; i < PendingConnections.Count; i++)
         {
             if ((DateTime.Now - PendingConnections[i].ConnectionTimestamp).TotalSeconds >=
                 PendingConnectionTimeout)
             {
                 lock (_lockObj)
                     PendingConnections.RemoveAt(i);
             }
         }
         Thread.Sleep(5000);
     }
 }
        private void AcceptCallback(IAsyncResult res)
        {
            if (!IsActive)
            {
                return;
            }
            var newSock = ChannelSocket.EndAccept(res);

            Peer.Peer newPeer;
            if (IsMainChannel)
            {
                newPeer = new Peer.Peer(new SocketIdentity(Manager.GeneratePeerId(), SocketIdentity.GenerateGuid()), newSock, BufferSize, this);
                newPeer.OnPeerDisconnected += (o, e2) =>
                {
                    OnPeerDisconnected.Raise(o, new ChannelEventArgs(this, newPeer));
                };
                newPeer.Receive();
                AcceptPeer(newPeer);
            }
            else
            {
                newPeer = new Peer.Peer(new SocketIdentity(Manager.GeneratePeerId()), newSock, BufferSize, this);
                PendingConnections.Add(new PendingPeerConnection(newPeer.Identity.Guid, newPeer));
                newPeer.OnPeerDisconnected += (o, e2) =>
                {
                    OnPeerDisconnected.Raise(o, new ChannelEventArgs(this, newPeer));
                };
                newPeer.Receive();
                newPeer.OnPeerRelocationRequest += (sender, e) =>
                {
                    if (PendingConnections.FirstOrDefault(pc => pc.Guid == e.PeerGuid && !pc.IsCancelled) != null)
                    {
                        AcceptPeer(newPeer);
                        OnPeerConnected.Raise(this, new ChannelEventArgs(this, e.Peer));

                        lock (_lockObj)
                            PendingConnections.Remove(PendingConnections.First(pc => pc.Guid == e.PeerGuid));
                    }
                };
            }
            ChannelSocket.BeginAccept(AcceptCallback, null);
        }