/// <summary>
/// Start up a session on the server side
/// </summary>
/// <param name="udpChannel">What channel are we on</param>
/// <param name="message">What was the last message we got?</param>
public void Accept(UDPChannel udpChannel, byte[] message)
{
DtlsServerProtocol serverProtocol = new DtlsServerProtocol(new SecureRandom());
DtlsServer server = new DtlsServer(_serverKeys, _userKeys);
server.TlsEventHandler += OnTlsEvent;
#if SUPPORT_TLS_CWT
server.CwtTrustKeySet = CwtTrustKeySet;
#endif
_transport.UDPChannel = udpChannel;
_transport.Receive(message);
// Make sure we do not startup a listing thread as the correct call is always made
// byt the DTLS accept protocol.
_listening = 1;
DtlsTransport dtlsServer = serverProtocol.Accept(server, _transport);
_listening = 0;
_dtlsSession = dtlsServer;
AuthenticationKey = server.AuthenticationKey;
AuthenticationCertificate = server.AuthenticationCertificate;
new Thread(StartListen).Start();
}
public void Connect(IPEndPoint remoteEP)
{
_socket.Connect(remoteEP);
var udpTransport = new UdpTransport(_socket);
var random = new SecureRandom();
var protocol = new DtlsClientProtocol(random);
var client = new TlsClientImpl();
_dtlsTransport = protocol.Connect(client, udpTransport);
}
public void Accept(DtlsServerProtocol serverProtocol, TlsServer server)
{
_dtlsTransport = serverProtocol.Accept(server, _udpTransport);
if (server is IDtlsServerWithConnectionInfo serverWithInfo)
{
var serverInfo = serverWithInfo.GetConnectionInfo();
ConnectionInfo = serverInfo;
}
}
public Task ConnectAsync(CoapTransportLayerConnectOptions connectOptions, CancellationToken cancellationToken)
{
_udpTransport = new UdpTransport(connectOptions);
var clientProtocol = new DtlsClientProtocol(new SecureRandom());
var client = new DtlsClient(ConvertProtocolVersion(DtlsVersion), (PreSharedKey)Credentials);
_dtlsTransport = clientProtocol.Connect(client, _udpTransport);
return(Task.FromResult(0));
}
public DtlsTransport Accept()
{
try
{
DtlsTransport dtlsTransport = dtlsServerProtocol.Accept(tlsServer, DatagramTransport);
HandshakeComplete?.Invoke(this, new HandshakeCompleteEventArgs(tlsServer.ChosenSrtpProtectionProfile, TlsRole.Server, tlsServer.SrtpKeyingMaterial));
return(dtlsTransport);
}
catch (System.Exception e)
{
throw e;
}
}
/// <summary>
/// Stop the current session
/// </summary>
public void Stop()
{
if (_dtlsSession != null) {
_dtlsSession.Close();
EventHandler<SessionEventArgs> h = SessionEvent;
if (h != null) {
SessionEventArgs thisEvent = new SessionEventArgs(SessionEventArgs.SessionEvent.Closed, this);
h(this, thisEvent);
}
_dtlsSession = null;
}
_client = null;
}
DtlsTransport Connect()
{
try
{
DtlsTransport dtlsTransport = dtlsClientProtocol.Connect(tlsClient, datagramTransport);
HandshakeComplete?.Invoke(this, new HandshakeCompleteEventArgs(tlsClient.ChosenSrtpProtectionProfile, TlsRole.Client, tlsClient.SrtpKeyingMaterial));
return(dtlsTransport);
}
catch (Exception e)
{
throw e;
}
}
private void EnsureConnected()
{
lock (_ensureConnectedLock)
{
if (_isConnected)
{
return;
}
var udpClient = new UdpClient(Server, Port);
var dtlsClientProtocol = new DtlsClientProtocol(new SecureRandom());
_datagramTransport = dtlsClientProtocol.Connect(_tlsClient, new UdpDatagramTransport(udpClient, NetworkMtu));
_isConnected = true;
}
}
/// <summary>
/// Create the DTLS connection over a specific UDP channel.
/// We already know what address we are going to use
/// </summary>
/// <param name="udpChannel">UDP channel to use</param>
public void Connect(UDPChannel udpChannel)
{
#if SUPPORT_TLS_CWT
if (CwtTrustKeySet != null)
{
_client = new DtlsClient(null, _userKey, CwtTrustKeySet);
}
else
{
#endif
if (_userKey.PrivateKey.HasKeyType((int)GeneralValuesInt.KeyType_Octet))
{
CBORObject kid = _userKey.PrivateKey[CoseKeyKeys.KeyIdentifier];
BasicTlsPskIdentity pskIdentity;
pskIdentity = new BasicTlsPskIdentity(kid != null ? kid.GetByteString() : new byte[0],
_userKey.PrivateKey[CoseKeyParameterKeys.Octet_k].GetByteString());
_client = new DtlsClient(null, pskIdentity);
}
else if (_userKey.PrivateKey.HasKeyType((int)GeneralValuesInt.KeyType_EC2))
{
_client = new DtlsClient(null, _userKey);
}
#if SUPPORT_TLS_CWT
}
#endif
_client.TlsEventHandler += OnTlsEvent;
DtlsClientProtocol clientProtocol = new DtlsClientProtocol(new SecureRandom());
_transport.UDPChannel = udpChannel;
AuthenticationKey = _userKey.PrivateKey;
_listening = 1;
DtlsTransport dtlsClient = clientProtocol.Connect(_client, _transport);
_listening = 0;
_dtlsSession = dtlsClient;
// We are now in the world of a connected system -
// We need to do the receive calls
new Thread(StartListen).Start();
}
public async Task ConnectAsync(CoapTransportLayerConnectOptions connectOptions, CancellationToken cancellationToken)
{
if (connectOptions == null)
{
throw new ArgumentNullException(nameof(connectOptions));
}
cancellationToken.ThrowIfCancellationRequested();
try
{
_udpTransport = new UdpTransport(connectOptions);
var clientProtocol = new DtlsClientProtocol(_secureRandom);
_dtlsClient = new DtlsClient(ConvertProtocolVersion(DtlsVersion), (PreSharedKey)Credentials);
using (cancellationToken.Register(() =>
{
_udpTransport.Close();
}))
{
_dtlsTransport = await Task.Run(() => clientProtocol.Connect(_dtlsClient, _udpTransport), cancellationToken).ConfigureAwait(false);
}
}
catch
{
_udpTransport?.Dispose();
if (cancellationToken.IsCancellationRequested)
{
throw new OperationCanceledException();
}
if (_dtlsClient.ReceivedAlert != 0)
{
throw new DtlsException($"Received alert {AlertDescription.GetText(_dtlsClient.ReceivedAlert)}.", null)
{
ReceivedAlert = _dtlsClient.ReceivedAlert
};
}
throw;
}
}
public void TestClientServer()
{
SecureRandom secureRandom = new SecureRandom();
DtlsClientProtocol clientProtocol = new DtlsClientProtocol(secureRandom);
DtlsServerProtocol serverProtocol = new DtlsServerProtocol(secureRandom);
MockDatagramAssociation network = new MockDatagramAssociation(1500);
Server server = new Server(serverProtocol, network.Server);
Thread serverThread = new Thread(new ThreadStart(server.Run));
serverThread.Start();
DatagramTransport clientTransport = network.Client;
clientTransport = new UnreliableDatagramTransport(clientTransport, secureRandom, 0, 0);
clientTransport = new LoggingDatagramTransport(clientTransport, Console.Out);
MockDtlsClient client = new MockDtlsClient(null);
DtlsTransport dtlsClient = clientProtocol.Connect(client, clientTransport);
for (int i = 1; i <= 10; ++i)
{
byte[] data = new byte[i];
Arrays.Fill(data, (byte)i);
dtlsClient.Send(data, 0, data.Length);
}
byte[] buf = new byte[dtlsClient.GetReceiveLimit()];
while (dtlsClient.Receive(buf, 0, buf.Length, 100) >= 0)
{
}
dtlsClient.Close();
server.Shutdown(serverThread);
}
/// <summary>
/// Connect to a group to start streaming
/// </summary>
/// <param name="groupId"></param>
/// <param name="simulator"></param>
/// <returns></returns>
public async Task Connect(string groupId, bool simulator = false)
{
_simulator = simulator;
var enableResult = await _localHueClient.SetStreamingAsync(groupId).ConfigureAwait(false);
byte[] psk = FromHex(_clientKey);
BasicTlsPskIdentity pskIdentity = new BasicTlsPskIdentity(_appKey, psk);
var dtlsClient = new DtlsClient(null !, pskIdentity);
DtlsClientProtocol clientProtocol = new DtlsClientProtocol(new SecureRandom());
await _socket.ConnectAsync(IPAddress.Parse(_ip), 2100).ConfigureAwait(false);
_udp = new UdpTransport(_socket);
if (!simulator)
{
_dtlsTransport = clientProtocol.Connect(dtlsClient, _udp);
}
}
public void Run()
{
try
{
DtlsTransport dtlsServer = mServerProtocol.Accept(mServerImpl, mServerTransport);
byte[] buf = new byte[dtlsServer.GetReceiveLimit()];
while (!isShutdown)
{
int length = dtlsServer.Receive(buf, 0, buf.Length, 100);
if (length >= 0)
{
dtlsServer.Send(buf, 0, length);
}
}
dtlsServer.Close();
}
catch (Exception e)
{
mCaught = e;
mOuter.LogException(mCaught);
}
}
public void Run()
{
try
{
MockDtlsServer server = new MockDtlsServer();
DtlsTransport dtlsServer = mServerProtocol.Accept(server, mServerTransport);
byte[] buf = new byte[dtlsServer.GetReceiveLimit()];
while (!isShutdown)
{
int length = dtlsServer.Receive(buf, 0, buf.Length, 1000);
if (length >= 0)
{
dtlsServer.Send(buf, 0, length);
}
}
dtlsServer.Close();
}
catch (Exception e)
{
Console.Error.WriteLine(e.StackTrace);
}
}
public void RunTest(TlsTestConfig config)
{
CheckDtlsVersion(config.clientMinimumVersion);
CheckDtlsVersion(config.clientOfferVersion);
CheckDtlsVersion(config.serverMaximumVersion);
CheckDtlsVersion(config.serverMinimumVersion);
SecureRandom secureRandom = new SecureRandom();
DtlsClientProtocol clientProtocol = new DtlsClientProtocol(secureRandom);
DtlsServerProtocol serverProtocol = new DtlsServerProtocol(secureRandom);
MockDatagramAssociation network = new MockDatagramAssociation(1500);
TlsTestClientImpl clientImpl = new TlsTestClientImpl(config);
TlsTestServerImpl serverImpl = new TlsTestServerImpl(config);
Server server = new Server(this, serverProtocol, network.Server, serverImpl);
Thread serverThread = new Thread(new ThreadStart(server.Run));
serverThread.Start();
Exception caught = null;
try
{
DatagramTransport clientTransport = network.Client;
if (TlsTestConfig.DEBUG)
{
clientTransport = new LoggingDatagramTransport(clientTransport, Console.Out);
}
DtlsTransport dtlsClient = clientProtocol.Connect(clientImpl, clientTransport);
for (int i = 1; i <= 10; ++i)
{
byte[] data = new byte[i];
Arrays.Fill(data, (byte)i);
dtlsClient.Send(data, 0, data.Length);
}
byte[] buf = new byte[dtlsClient.GetReceiveLimit()];
while (dtlsClient.Receive(buf, 0, buf.Length, 100) >= 0)
{
}
dtlsClient.Close();
}
catch (Exception e)
{
caught = e;
LogException(caught);
}
server.Shutdown(serverThread);
// TODO Add checks that the various streams were closed
Assert.AreEqual(config.expectFatalAlertConnectionEnd, clientImpl.FirstFatalAlertConnectionEnd, "Client fatal alert connection end");
Assert.AreEqual(config.expectFatalAlertConnectionEnd, serverImpl.FirstFatalAlertConnectionEnd, "Server fatal alert connection end");
Assert.AreEqual(config.expectFatalAlertDescription, clientImpl.FirstFatalAlertDescription, "Client fatal alert description");
Assert.AreEqual(config.expectFatalAlertDescription, serverImpl.FirstFatalAlertDescription, "Server fatal alert description");
if (config.expectFatalAlertConnectionEnd == -1)
{
Assert.IsNull(caught, "Unexpected client exception");
Assert.IsNull(server.mCaught, "Unexpected server exception");
}
}
internal DtlsClient(Socket socket, DtlsTransport transport)
{
_socket = socket;
_dtlsTransport = transport;
}
