public PeerInfo Wave(IPEndPoint facilitatorIp, int timeout, UdpClient udpClient)
{
long waitTime = timeout * 10000;
_udpClient = udpClient;
Logger.Debug("Waving at " + facilitatorIp + " from local port " + ((IPEndPoint)udpClient.Client.LocalEndPoint).Port + " for " + timeout + "ms");
var packet = new StandardWaveTunnelRqPacket { internalEndPoint = new IPEndPoint(IPAddress.Any, ((IPEndPoint)udpClient.Client.LocalEndPoint).Port) };
long startTime = DateTime.Now.Ticks;
_waveEvent.Reset();
// Setup a listener for a wave response
InitReceiverWaveRs();
do
{
byte[] sendBytes = packet.getBytes();
udpClient.Send(sendBytes, sendBytes.Length, facilitatorIp);
if (DateTime.Now.Ticks - startTime > waitTime)
{
Logger.Error("Wave timeout : " + (DateTime.Now.Ticks - startTime));
//throw new TimeoutException("Timeout occured while waving");
break;
}
Logger.Debug("Waiting for wave response from " + facilitatorIp + " to local port " + ((IPEndPoint)udpClient.Client.LocalEndPoint).Port);
} while (!_waveEvent.WaitOne(2000));
if(_waveResult == null)
{
_waveResult = new PeerInfo();
}
_waveResult.InternalEndPoints = GetLocalEndPoints(_udpClient);
return _waveResult;
}
internal override UserToUserResponse ProcessWithEngagement(Engagement engagement, UserToUserRequest req)
{
ListenHandshakeRq request = (ListenHandshakeRq)req;
ListenHandshakeRs response = new ListenHandshakeRs();
try
{
var peerInfo = new PeerInfo()
{
ExternalEndPoint =
request.externalEndPoint != null ? new IPEndPoint(IPAddress.Parse(request.externalEndPoint.address),
request.externalEndPoint.port) : null,
};
foreach (var ipEndPointElement in request.internalEndPoints)
{
peerInfo.InternalEndPoints.Add(new IPEndPoint(IPAddress.Parse(ipEndPointElement.address), ipEndPointElement.port));
}
_appContext.P2PManager.ReceiveP2PTunnel(request.uniqueId, peerInfo);
}
catch (Exception e)
{
Logger.Error("Failed to start listening for UDP traffic from peer : " + e.Message,e);
response.error = "LISTEN_ERROR";
response.errorMessage = "Failed to start listening for UDP traffic";
}
return response;
}
public PeerInfo Wave(IPEndPoint facilitatorIp, int timeout, UdpClient udpClient)
{
long waitTime = timeout * 10000;
_udpClient = udpClient;
Logger.Debug("Waving at " + facilitatorIp + " from local port " + ((IPEndPoint)udpClient.Client.LocalEndPoint).Port + " for " + timeout + "ms");
var packet = new StandardWaveTunnelRqPacket {
internalEndPoint = new IPEndPoint(IPAddress.Any, ((IPEndPoint)udpClient.Client.LocalEndPoint).Port)
};
long startTime = DateTime.Now.Ticks;
_waveEvent.Reset();
// Setup a listener for a wave response
InitReceiverWaveRs();
do
{
byte[] sendBytes = packet.getBytes();
udpClient.Send(sendBytes, sendBytes.Length, facilitatorIp);
if (DateTime.Now.Ticks - startTime > waitTime)
{
Logger.Error("Wave timeout : " + (DateTime.Now.Ticks - startTime));
//throw new TimeoutException("Timeout occured while waving");
break;
}
Logger.Debug("Waiting for wave response from " + facilitatorIp + " to local port " + ((IPEndPoint)udpClient.Client.LocalEndPoint).Port);
} while (!_waveEvent.WaitOne(2000));
if (_waveResult == null)
{
_waveResult = new PeerInfo();
}
_waveResult.InternalEndPoints = GetLocalEndPoints(_udpClient);
return(_waveResult);
}
public void ProcessWaveRs(StandardWaveTunnelRsPacket packet)
{
Logger.Debug("Processing Wave Response from " + packet.ip);
_waveResult = new PeerInfo()
{
ExternalEndPoint = packet.externalEndPoint, FacilitatorRepeatedEndPoint = packet.ip
};
_waveEvent.Set();
}
public IPEndPoint SyncWithPeer(PeerInfo peer, int timeout, UdpClient udpClient)
{
long waitTime = timeout * 10000;
long startTime = DateTime.Now.Ticks;
Logger.Debug("Syncing with peer " + peer + " from " + udpClient.Client.LocalEndPoint + " to establish tunnel " + Id);
StandardSyncRqTunnelPacket syncRq = new StandardSyncRqTunnelPacket();
_syncEvent.Reset();
_udpClient = udpClient;
InitReceiverThread();
int attempts = 0;
do
{
if (DateTime.Now.Ticks - startTime > waitTime)
{
Logger.Debug("Tunnel " + Id + ", sync Timeout : " + (DateTime.Now.Ticks - startTime));
throw new TimeoutException("Tunnel " + Id + ", timeout occured while attempting sync with peer " + peer);
}
byte[] syncBytes = syncRq.getBytes();
if ((_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.Internal)))
{
Logger.Debug("Tunnel " + Id + ", sent requests, waiting for sync response from internal of " + peer);
foreach (var endPoint in peer.InternalEndPoints)
{
udpClient.Send(syncBytes, syncBytes.Length, endPoint);
}
}
if (attempts > internalAttempts && (_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.External)))
{
Logger.Debug("Tunnel " + Id + ", sent requests, waiting for sync response from external of " + peer);
udpClient.Send(syncBytes, syncBytes.Length, peer.ExternalEndPoint);
}
// Faciliatator is our last choice, only send here after 3 attempts at the other ones
if (attempts >= externalAttempts && (_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.Facilitator)))
{
Logger.Debug("Tunnel " + Id + ", sent requests, waiting for sync response from facilitator of " + peer);
udpClient.Send(syncBytes, syncBytes.Length, peer.FacilitatorRepeatedEndPoint);
}
attempts++;
} while (!_syncEvent.WaitOne(1000));
var activeIp = _lastSyncPacketIp;
Logger.Debug("Tunnel " + Id + ", synchronisation with " + activeIp + " established");
return(activeIp);
}
public IPEndPoint Sync(PeerInfo peer, string syncId, List<SyncType> syncTypes = null)
{
var syncer = new Syncer(syncId, syncTypes);
var activeIp = syncer.SyncWithPeer(peer, 60000, _udpClient);
var udtSocket = SetupUdtSocket();
udtSocket.Bind(_udpClient.Client);
udtSocket.Connect(activeIp.Address, activeIp.Port);
UdtConnection = udtSocket;
UdtConnection.BlockingReceive = true;
Logger.Debug("[" + Thread.CurrentThread.ManagedThreadId + "] Successfully completed outgoing tunnel with " + activeIp + "-" + syncId);
return activeIp;
}
private static void RunSyncer(string connectionId, PeerInfo peer, ITunnelEndpoint pendingTunnel, Action<ISocket> receivingMethod)
{
try
{
var activeIp = pendingTunnel.WaitForSync(peer, connectionId, GwupeClientAppContext.CurrentAppContext.SettingsManager.SyncTypes);
Logger.Info("Successfully completed incoming tunnel with " + activeIp.Address + ":" + activeIp.Port + " [" + connectionId + "]");
// call the callback method
Logger.Debug("Handing over the the receiving method for this connection");
receivingMethod(pendingTunnel);
}
catch (Exception ex)
{
ThreadPool.QueueUserWorkItem(m => GwupeClientAppContext.CurrentAppContext.SubmitFaultReport(
new FaultReport()
{
Subject = "P2P setup error [" + connectionId + "]",
UserReport = "INTERNAL : Failed to sync with peer [" + connectionId + "] : " + ex.Message
}));
Logger.Error("Failed to sync with peer [" + peer + "] for connection " + connectionId, ex);
}
}
private static PeerInfo GetPeerInfoFromResponse(InitP2PConnectionRs response)
{
var peer = new PeerInfo()
{
ExternalEndPoint =
response.externalEndPoint != null
? new IPEndPoint(IPAddress.Parse(response.externalEndPoint.address),
Convert.ToInt32(response.externalEndPoint.port))
: null,
};
foreach (var ipEndPointElement in response.internalEndPoints)
{
peer.InternalEndPoints.Add(new IPEndPoint(IPAddress.Parse(ipEndPointElement.address), ipEndPointElement.port));
}
return peer;
}
// This is where we wait to receive a connection, requested by the server
internal void ReceiveP2PTunnel(string connectionId, PeerInfo peerInfo)
{
TunnelEndpointContainer pendingTunnel = GetPendingTunnel(connectionId);
var receivingMethod = _awaitingConnections[connectionId];
_awaitingConnections.Remove(connectionId);
// now to complete the tunnel
peerInfo.FacilitatorRepeatedEndPoint = pendingTunnel.FacilitatorEndPoint;
Thread thread = new Thread(() => RunSyncer(connectionId, peerInfo, pendingTunnel.TunnelEndpoint, receivingMethod)) { Name = "waitforsync-" + connectionId, IsBackground = true };
thread.Start();
}
public IPEndPoint WaitForSyncFromPeer(PeerInfo peer, int timeout, UdpClient udpClient)
{
long waitTime = timeout * 10000;
long startTime = DateTime.Now.Ticks;
Logger.Debug("Waiting for sync from peer " + peer + " to " + udpClient.Client.LocalEndPoint + " to establish tunnel " + Id);
StandardTunnelNopPacket nop = new StandardTunnelNopPacket();
_expectedPeer = peer;
_syncEvent.Reset();
_udpClient = udpClient;
InitReceiverThread();
int attempts = 0;
do
{
if (DateTime.Now.Ticks - startTime > waitTime)
{
Logger.Debug("Tunnel " + Id + ", sync Timeout : " + (DateTime.Now.Ticks - startTime));
throw new TimeoutException("Tunnel " + Id + ", timeout occured while waiting for sync from peer " + peer);
}
byte[] nopBytes = nop.getBytes();
if ((_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.Internal)))
{
Logger.Debug("Tunnel " + Id + ", sent nops, now waiting for sync request from internal of " + peer);
foreach (var endPoint in peer.InternalEndPoints)
{
udpClient.Send(nopBytes, nopBytes.Length, endPoint);
}
}
if (attempts > internalAttempts && (_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.External)))
{
Logger.Debug("Tunnel " + Id + ", sent nops, now waiting for sync request from external of " + peer);
udpClient.Send(nopBytes, nopBytes.Length, peer.ExternalEndPoint);
}
// Facilitator is our last choice, only send here after 3 attempts at the other ones
if (attempts >= externalAttempts && (_syncTypes.Contains(SyncType.All) || _syncTypes.Contains(SyncType.Facilitator)))
{
Logger.Debug("Tunnel " + Id + ", sent nops, now waiting for sync request from facilitator of " + peer);
udpClient.Send(nopBytes, nopBytes.Length, peer.FacilitatorRepeatedEndPoint);
}
attempts++;
} while (!_syncRqEvent.WaitOne(1000));
var activeIp = _lastSyncRqPacketIp;
Logger.Debug("Tunnel " + Id + ", synchronisation with " + activeIp + " established");
return activeIp;
}
public PeerInfo Wave(IPEndPoint facilitator, int timeout)
{
_waver = new Waver();
_self = _waver.Wave(facilitator, timeout, _udpClient);
return _self;
}
public void WaitForSyncFromPeer(PeerInfo peerIp, int timeout)
{
_syncer = new Syncer(Id);
_remoteEndpoint = _syncer.WaitForSyncFromPeer(peerIp, timeout, _udpClient);
_peer = peerIp;
IsTunnelEstablished = true;
StartCheckerForPings();
}
public void SyncWithPeer(PeerInfo peerIp, int timeout)
{
_syncer = new Syncer(Id);
_remoteEndpoint = _syncer.SyncWithPeer(peerIp, timeout, _udpClient);
_peer = peerIp;
IsTunnelEstablished = true;
StartPinger();
}
private void InitSyncClick(object sender, RoutedEventArgs e)
{
EnableClientServerButtons();
InitSyncWithButton.IsEnabled = false;
WaitSyncFromButton.IsEnabled = false;
try
{
var peerInfo = new PeerInfo();
{
//ExternalEndPoint = new IPEndPoint(IPAddress.Parse(Destination.Text), Convert.ToInt32(DestinationPort.Text))
};
_socket.Sync(peerInfo, "test");
Status.Text = "Synced with " + Destination.Text + ":" + DestinationPort.Text;
}
catch (Exception ex)
{
Dispatcher.Invoke(new Action(() => ErrorBlock.Text = ex.Message + "\n" + ex.StackTrace));
}
}
public IPEndPoint WaitForSync(PeerInfo peer, String syncId, List<SyncType> syncTypes = null)
{
var syncer = new Syncer(syncId, syncTypes);
var activeIp = syncer.WaitForSyncFromPeer(peer, 60000, _udpClient);
ListeningSocket = SetupUdtSocket();
ListeningSocket.Bind(_udpClient.Client);
ListeningSocket.Listen(10);
Udt.Socket udtClient = ListeningSocket.Accept();
UdtConnection = udtClient;
UdtConnection.BlockingReceive = true;
Logger.Debug("Successfully completed incoming tunnel with " + activeIp + "-" + syncId);
return activeIp;
}
public PeerInfo Wave(IPEndPoint facilitator)
{
var waver = new Waver();
_self = waver.Wave(facilitator, 10000, _udpClient);
Logger.Debug("After wave, local endpoints are " + _self);
if (_self.ExternalEndPoint == null)
{
Logger.Warn("Failed to get external endpoint : " + _self);
}
if (_self.EndPoints.Count == 0)
{
throw new Exception("Failed to determine any local endpoints : " + _self.ToString());
}
return _self;
}
public void ProcessWaveRs(StandardWaveTunnelRsPacket packet)
{
Logger.Debug("Processing Wave Response from " + packet.ip);
_waveResult = new PeerInfo() { ExternalEndPoint = packet.externalEndPoint, FacilitatorRepeatedEndPoint = packet.ip };
_waveEvent.Set();
}
