public void STUNWithUsernameToBytesUnitTest()
{
Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);
STUNMessage initMessage = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
initMessage.AddUsernameAttribute("someusername");
byte[] stunMessageBytes = initMessage.ToByteBuffer();
Console.WriteLine(BitConverter.ToString(stunMessageBytes));
}
public void STUNWithUsernameToBytesUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
STUNMessage initMessage = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
initMessage.AddUsernameAttribute("someusername");
byte[] stunMessageBytes = initMessage.ToByteBuffer();
logger.LogDebug(BitConverter.ToString(stunMessageBytes));
}
public void CheckPriorityAttributeLengthUnitTest()
{
STUNMessage stunRequest = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
stunRequest.AddUsernameAttribute("dummy:dummy");
stunRequest.Attributes.Add(new STUNAttribute(STUNAttributeTypesEnum.Priority, BitConverter.GetBytes(1234U)));
stunRequest.Attributes.Add(new STUNAttribute(STUNAttributeTypesEnum.UseCandidate, null));
byte[] stunReqBytes = stunRequest.ToByteBufferStringKey("dummy", true);
var stunReq = STUNMessage.ParseSTUNMessage(stunReqBytes, stunReqBytes.Length);
Assert.Equal(4, stunReq.Attributes.Single(x => x.AttributeType == STUNAttributeTypesEnum.Priority).Value.Length);
}
private void Answered(SDP xmppSDP)
{
//Console.WriteLine("Yay call answered.");
//Console.WriteLine(sdp.ToString());
m_xmppServerEndPoint = SDP.GetSDPRTPEndPoint(xmppSDP.ToString());
logger.Debug("Sending STUN binding request to " + m_xmppServerEndPoint + ".");
STUNMessage initMessage = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
initMessage.AddUsernameAttribute(xmppSDP.IceUfrag + m_localSTUNUFrag);
byte[] stunMessageBytes = initMessage.ToByteBuffer();
m_xmppMediaSocket.Send(stunMessageBytes, stunMessageBytes.Length, m_xmppServerEndPoint);
m_uas.Answer("application/sdp", GetSDPForSIPResponse().ToString(), null, SIPDialogueTransferModesEnum.NotAllowed);
}
/// <summary>
/// Event handler for an answer on an outgoing Google Voice call.
/// </summary>
/// <param name="xmppSDP">The SDP packet received from the Google Voice gateway.</param>
private void XMPPAnswered(SDP xmppSDP)
{
StatusMessage("Google Voice call answered.");
IPEndPoint remoteSDPEndPoint = SDP.GetSDPRTPEndPoint(xmppSDP.ToString());
_audioChannel.SetRemoteRTPEndPoint(remoteSDPEndPoint);
// Google Voice require that a STUN exchange occurs on the RTP socket before the RTP packet can flow.
// This code block sends a STUN binding request to the Google Voice gateway.
STUNMessage initMessage = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
initMessage.AddUsernameAttribute(xmppSDP.IceUfrag + m_localSTUNUFrag);
byte[] stunMessageBytes = initMessage.ToByteBuffer();
//_audioChannel.SendRTPRaw(stunMessageBytes, stunMessageBytes.Length);
}
public void IntegrityCheckUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
string icePassword = "******";
STUNMessage stunRequest = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
stunRequest.Header.TransactionId = Encoding.ASCII.GetBytes(Crypto.GetRandomString(STUNHeader.TRANSACTION_ID_LENGTH));
stunRequest.AddUsernameAttribute("xxxx:yyyy");
stunRequest.Attributes.Add(new STUNAttribute(STUNAttributeTypesEnum.Priority, BitConverter.GetBytes(1)));
var buffer = stunRequest.ToByteBufferStringKey(icePassword, true);
//logger.LogDebug($"HMAC: {buffer.Skip(buffer.Length - ).Take(20).ToArray().HexStr()}.");
//logger.LogDebug($"Fingerprint: {buffer.Skip(buffer.Length -4).ToArray().HexStr()}.");
STUNMessage rndTripReq = STUNMessage.ParseSTUNMessage(buffer, buffer.Length);
Assert.True(rndTripReq.isFingerprintValid);
Assert.True(rndTripReq.CheckIntegrity(System.Text.Encoding.UTF8.GetBytes(icePassword)));
}
private void ListenForXMPPServerMedia(UdpClient localSocket)
{
try
{
logger.Debug("Commencing listen for media from XMPP server on local socket " + m_localSIPEndPoint + ".");
bool stunResponseSent = false;
IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
byte[] buffer = localSocket.Receive(ref remoteEndPoint);
while (buffer != null && buffer.Length > 0 && !m_exit)
{
//if (!stunResponseSent && buffer[0] >> 0xef == 0)
if (!stunResponseSent)
{
//logger.Debug(buffer.Length + " bytes read on media socket from " + remoteEndPoint.ToString() + ", byte[0]=" + buffer[0].ToString() + ".");
STUNMessage stunMessage = STUNMessage.ParseSTUNMessage(buffer, buffer.Length);
logger.Debug("STUN message received " + stunMessage.Header.MessageType + ".");
if (stunMessage.Header.MessageType == STUNMessageTypesEnum.BindingRequest)
{
logger.Debug("Sending STUN response to " + remoteEndPoint + ".");
stunResponseSent = true;
STUNMessage stunResponse = new STUNMessage();
stunResponse.Header.MessageType = STUNMessageTypesEnum.BindingResponse;
stunResponse.Header.TransactionId = stunMessage.Header.TransactionId;
stunResponse.AddUsernameAttribute(Encoding.UTF8.GetString(stunMessage.Attributes[0].Value));
byte[] stunRespBytes = stunResponse.ToByteBuffer();
m_xmppMediaSocket.Send(stunRespBytes, stunRespBytes.Length, remoteEndPoint);
}
else
{
//if (stunMessage.Attributes.Count > 0)
//{
// foreach (STUNAttribute stunAttribute in stunMessage.Attributes)
// {
// Console.WriteLine(" " + stunAttribute.AttributeType + "=" + stunAttribute.Value + ".");
// }
//}
}
}
if (buffer.Length > 100)
{
m_sipMediaSocket.Send(buffer, buffer.Length, m_sipPhoneRTPEndPoint);
}
buffer = localSocket.Receive(ref remoteEndPoint);
}
}
catch (SocketException)
{ }
catch (Exception excp)
{
logger.Error("Exception ListenForXMPPServerMedia. " + excp.Message);
}
finally
{
logger.Debug("Shutting down listen for SIP phone media on local socket " + m_localSIPEndPoint + ".");
}
}