public void TestMessageIntegrityAttributeForBindingRequest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
byte[] stunReq = new byte[] {
0x00, 0x01, 0x00, 0x60, 0x21, 0x12, 0xa4, 0x42, 0x69, 0x64, 0x38, 0x2b, 0x4c, 0x45, 0x44, 0x57,
0x4d, 0x31, 0x64, 0x30, 0x00, 0x06, 0x00, 0x21, 0x75, 0x4f, 0x35, 0x73, 0x69, 0x31, 0x75, 0x61,
0x37, 0x63, 0x59, 0x34, 0x74, 0x38, 0x4d, 0x4d, 0x3a, 0x4c, 0x77, 0x38, 0x2f, 0x30, 0x43, 0x31,
0x43, 0x72, 0x76, 0x68, 0x5a, 0x43, 0x31, 0x67, 0x62, 0x00, 0x00, 0x00, 0x80, 0x2a, 0x00, 0x08,
0xc0, 0x3d, 0xf5, 0x13, 0x40, 0xf4, 0x22, 0x46, 0x00, 0x25, 0x00, 0x00, 0x00, 0x24, 0x00, 0x04,
0x6e, 0x7f, 0x1e, 0xff, 0x00, 0x08, 0x00, 0x14, 0x55, 0x82, 0x69, 0xde, 0x17, 0x55, 0xcc, 0x66,
0x29, 0x23, 0xe6, 0x7d, 0xec, 0x87, 0x6c, 0x07, 0x3a, 0xd6, 0x78, 0x15, 0x80, 0x28, 0x00, 0x04,
0x1c, 0xae, 0x89, 0x2e
};
STUNMessage stunMessage = STUNMessage.ParseSTUNMessage(stunReq, stunReq.Length);
STUNHeader stunHeader = stunMessage.Header;
logger.LogDebug("Request type = " + stunHeader.MessageType + ".");
logger.LogDebug("Length = " + stunHeader.MessageLength + ".");
logger.LogDebug("Transaction ID = " + BitConverter.ToString(stunHeader.TransactionId) + ".");
Assert.Equal(STUNMessageTypesEnum.BindingRequest, stunHeader.MessageType);
Assert.Equal(96, stunHeader.MessageLength);
Assert.Equal(6, stunMessage.Attributes.Count);
Assert.Equal("69-64-38-2B-4C-45-44-57-4D-31-64-30", BitConverter.ToString(stunMessage.Header.TransactionId));
stunMessage.Attributes.Remove(stunMessage.Attributes.Where(x => x.AttributeType == STUNAttributeTypesEnum.MessageIntegrity).Single());
stunMessage.Attributes.Remove(stunMessage.Attributes.Where(x => x.AttributeType == STUNAttributeTypesEnum.FingerPrint).Single());
byte[] buffer = stunMessage.ToByteBufferStringKey("r89XhWC9k2kW4Pns75vmwHIa", true);
Assert.Equal(BitConverter.ToString(stunReq), BitConverter.ToString(buffer));
}
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);
}
public void GenerateHmacAndFingerprintTestMethod()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
string icePassword = "******";
STUNMessage msg = new STUNMessage(STUNMessageTypesEnum.BindingSuccessResponse);
msg.Header.TransactionId = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
msg.AddXORMappedAddressAttribute(IPAddress.Loopback, 55477);
var buffer = msg.ToByteBufferStringKey(icePassword, true);
string hmac = "HMAC: ";
for (int i = 36; i < 56; i++)
{
hmac += $"{buffer[i]:X2} ";
}
logger.LogDebug(hmac);
logger.LogDebug($"Fingerprint: {buffer[buffer.Length - 4]:X2} {buffer[buffer.Length - 3]:X2} {buffer[buffer.Length - 2]:X2} {buffer[buffer.Length - 1]:X2}.");
}
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)));
}
