public bool Process(TurnMessage request, out TurnMessage response)
{
lock (syncRoot)
{
ErrorCode? errorCode = ValidateRequest(request);
if (errorCode != null)
{
response = new TurnMessage()
{
MessageType = request.MessageType.GetErrorResponseType(),
TransactionId = request.TransactionId,
MagicCookie = new MagicCookie(),
ErrorCodeAttribute = new ErrorCodeAttribute()
{
ErrorCode = (int)errorCode,
ReasonPhrase = ((ErrorCode)errorCode).GetReasonPhrase(),
},
Realm = new Realm(TurnMessageRfc.MsTurn) { Value = Realm, },
Nonce = new Nonce(TurnMessageRfc.MsTurn) { Value = NewNonce(), },
MsVersion = new MsVersion() { Value = 1, },
};
}
else
{
response = null;
}
return response == null;
}
}
public static TurnMessage Parse(byte[] bytes, int startIndex, int length, TurnMessageRfc rfc)
{
TurnMessage message = new TurnMessage();
message.ParseHeader(bytes, startIndex, length);
message.ParseAttributes(bytes, startIndex, length, rfc);
return(message);
}
public void ParseTest3()
{
byte[] bytes = new byte[]
{
0x01, 0x01, 0x00, 0x48, // Response type and message length
0x21, 0x12, 0xa4, 0x42, // Magic cookie
0xb7, 0xe7, 0xa7, 0x01, // }
0xbc, 0x34, 0xd6, 0x86, // } Transaction ID
0xfa, 0x87, 0xdf, 0xae, // }
0x80, 0x22, 0x00, 0x0b, // SOFTWARE attribute header
0x74, 0x65, 0x73, 0x74, // }
0x20, 0x76, 0x65, 0x63, // } UTF-8 server name
0x74, 0x6f, 0x72, 0x20, // }
0x00, 0x20, 0x00, 0x14, // XOR-MAPPED-ADDRESS attribute header
0x00, 0x02, 0xa1, 0x47, // Address family (IPv6) and xor'd mapped port number
0x01, 0x13, 0xa9, 0xfa, // }
0xa5, 0xd3, 0xf1, 0x79, // } Xor'd mapped IPv6 address
0xbc, 0x25, 0xf4, 0xb5, // }
0xbe, 0xd2, 0xb9, 0xd9, // }
0x00, 0x08, 0x00, 0x14, // MESSAGE-INTEGRITY attribute header
0xa3, 0x82, 0x95, 0x4e, // }
0x4b, 0xe6, 0x7b, 0xf1, // }
0x17, 0x84, 0xc9, 0x7c, // } HMAC-SHA1 fingerprint
0x82, 0x92, 0xc2, 0x75, // }
0xbf, 0xe3, 0xed, 0x41, // }
0x80, 0x28, 0x00, 0x04, // FINGERPRINT attribute header
0xc8, 0xfb, 0x0b, 0x4c, // CRC32 fingerprint
};
string password = @"VOkJxbRl1RmTxUk/WvJxBt";
TurnMessage message = TurnMessage.Parse(bytes, TurnMessageRfc.Rfc5389);
Assert.AreEqual(@"test vector", message.Software.Value);
Assert.AreEqual(@"2001:db8:1234:5678:11:2233:4455:6677", message.XorMappedAddress.IpAddress.ToString());
Assert.AreEqual(32853, message.XorMappedAddress.Port);
byte[] messageIntegrity = message.ComputeMessageIntegrity(password, false);
Helpers.AreArrayEqual(messageIntegrity, message.MessageIntegrity.Value);
Assert.AreEqual(0x48, bytes[3]);
uint fingerprint = message.ComputeFingerprint();
Assert.AreEqual(fingerprint, message.Fingerprint.Value);
byte[] actual = message.GetBytes(password, false, 0x20);
Helpers.AreArrayEqual(bytes, actual);
TurnMessage message2 = new TurnMessage()
{
MessageType = MessageType.BindingResponse,
TransactionId = message.TransactionId,
Software = message.Software,
XorMappedAddress = message.XorMappedAddress,
MessageIntegrity = new MessageIntegrity(),
Fingerprint = new Fingerprint(),
};
byte[] actual2 = message2.GetBytes(password, false, 0x20);
Helpers.AreArrayEqual(bytes, actual2);
}
public void ParseTest2()
{
byte[] bytes = new byte[]
{
0x01, 0x01, 0x00, 0x3c, // Response type and message length
0x21, 0x12, 0xa4, 0x42, // Magic cookie
0xb7, 0xe7, 0xa7, 0x01, // }
0xbc, 0x34, 0xd6, 0x86, // } Transaction ID
0xfa, 0x87, 0xdf, 0xae, // }
0x80, 0x22, 0x00, 0x0b, // SOFTWARE attribute header
0x74, 0x65, 0x73, 0x74, // }
0x20, 0x76, 0x65, 0x63, // } UTF-8 server name
0x74, 0x6f, 0x72, 0x20, // }
0x00, 0x20, 0x00, 0x08, // XOR-MAPPED-ADDRESS attribute header
0x00, 0x01, 0xa1, 0x47, // Address family (IPv4) and xor'd mapped port number
0xe1, 0x12, 0xa6, 0x43, // Xor'd mapped IPv4 address
0x00, 0x08, 0x00, 0x14, // MESSAGE-INTEGRITY attribute header
0x2b, 0x91, 0xf5, 0x99, // }
0xfd, 0x9e, 0x90, 0xc3, // }
0x8c, 0x74, 0x89, 0xf9, // } HMAC-SHA1 fingerprint
0x2a, 0xf9, 0xba, 0x53, // }
0xf0, 0x6b, 0xe7, 0xd7, // }
0x80, 0x28, 0x00, 0x04, // FINGERPRINT attribute header
0xc0, 0x7d, 0x4c, 0x96, // CRC32 fingerprint
};
string password = @"VOkJxbRl1RmTxUk/WvJxBt";
TurnMessage message = TurnMessage.Parse(bytes, TurnMessageRfc.Rfc5389);
Assert.AreEqual(@"test vector", message.Software.Value);
Assert.AreEqual(@"192.0.2.1", message.XorMappedAddress.IpAddress.ToString());
Assert.AreEqual(32853, message.XorMappedAddress.Port);
byte[] messageIntegrity = message.ComputeMessageIntegrity(password, false);
Helpers.AreArrayEqual(messageIntegrity, message.MessageIntegrity.Value);
Assert.AreEqual(0x3c, bytes[3]);
uint fingerprint = message.ComputeFingerprint();
Assert.AreEqual(fingerprint, message.Fingerprint.Value);
byte[] actual = message.GetBytes(password, false, 0x20);
Helpers.AreArrayEqual(bytes, actual);
TurnMessage message2 = new TurnMessage()
{
MessageType = MessageType.BindingResponse,
TransactionId = message.TransactionId,
Software = message.Software,
XorMappedAddress = message.XorMappedAddress,
MessageIntegrity = new MessageIntegrity(),
Fingerprint = new Fingerprint(),
};
byte[] actual2 = message2.GetBytes(password, false, 0x20);
Helpers.AreArrayEqual(bytes, actual2);
}
public void MS_Message_Integrity_With_Data_Offset_In_Array()
{
var key2 = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var created = new TurnMessage()
{
MessageType = MessageType.AllocateRequest,
TransactionId = TransactionId.Generate(),
MagicCookie = new MagicCookie(),
MsVersion = new MsVersion()
{
Value = 1,
},
MsUsername = new MsUsername()
{
Value = new byte[52],
},
Nonce = new Nonce(TurnMessageRfc.MsTurn)
{
Value = "17938999-C63D-41cd-87A4-FE80975F03BA",
},
Realm = new Realm(TurnMessageRfc.MsTurn)
{
Value = "test.test",
},
MessageIntegrity = new MessageIntegrity(),
};
int offset = 120;
var buffer = new byte[4096];
created.ComputeMessageLength();
created.GetBytes(buffer, offset, key2);
var parsed = TurnMessage.Parse(buffer, offset, created.TotalMessageLength, TurnMessageRfc.MsTurn);
Assert.IsTrue(parsed.IsValidMessageIntegrity(key2));
}
public void MsTurnMessageTest6()
{
byte[] expected = new byte[]
{
0x01, 0x15, 0x00, 0xA9,
0x1B, 0xE1, 0x64, 0x3C,
0x91, 0x14, 0x00, 0x00,
0x1B, 0xE1, 0x64, 0x3C,
0x91, 0x14, 0x00, 0x00,
0x00, 0x0F, 0x00, 0x04,
0x72, 0xC6, 0x4B, 0xC6,
0x00, 0x12, 0x00, 0x08,
0x00, 0x01, 0x61, 0x4F,
0xD5, 0x1B, 0x5D, 0x66,
0x00, 0x13, 0x00, 0x91,
0x00, 0x8F, 0x80, 0xC8,
0x00, 0x09, 0x36, 0x15,
0xDA, 0x97, 0x70, 0x3F,
0x62, 0xFD, 0x22, 0x6C,
0x49, 0x35, 0x03, 0xAA,
0x99, 0xC4, 0x96, 0x3D,
0x05, 0xFE, 0x10, 0xE8,
0xFF, 0xEC, 0x9D, 0x6F,
0xA2, 0x26, 0x44, 0x7C,
0x40, 0xE5, 0x7C, 0xB0,
0xAB, 0x2A, 0xA4, 0x66,
0x1F, 0x5E, 0x74, 0x25,
0x56, 0x3A, 0x0D, 0x64,
0x8D, 0xBD, 0x8D, 0xFB,
0xF4, 0x81, 0xA3, 0xED,
0x60, 0x35, 0x2B, 0x01,
0x7E, 0xC4, 0xF8, 0x6D,
0xF0, 0x26, 0xBD, 0xFF,
0xF3, 0x31, 0xA7, 0xA7,
0xDC, 0xAF, 0x89, 0x9C,
0xFA, 0xC1, 0xC7, 0x3E,
0xC0, 0x65, 0x53, 0x9C,
0x90, 0xDD, 0xAF, 0xCC,
0x02, 0x2E, 0xF0, 0xF3,
0xB9, 0xAA, 0x5D, 0xB6,
0x07, 0xB5, 0x17, 0x2A,
0xDE, 0xF0, 0x23, 0x52,
0x01, 0x7F, 0xD3, 0xE6,
0x16, 0xB1, 0xF2, 0x90,
0x16, 0x5A, 0x79, 0xD6,
0xE9, 0xC9, 0xB8, 0x5F,
0x53, 0xE0, 0x25, 0x63,
0x5B, 0x09, 0x80, 0x00,
0x00, 0x05, 0x01, 0x85,
0xBA, 0x35, 0xA0, 0xC8,
0x79, 0xF7, 0xED, 0x47,
0x91,
};
TurnMessage message = new TurnMessage()
{
IsAttributePaddingDisabled = true,
MessageType = MessageType.DataIndication,
TransactionId = new TransactionId(expected, 4),
MagicCookie = new MagicCookie(),
RemoteAddress = new RemoteAddress()
{
IpEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("213.27.93.102"), 24911),
},
Data = new Data()
{
Value = new byte[]
{
0x00, 0x8F, 0x80, 0xC8,
0x00, 0x09, 0x36, 0x15,
0xDA, 0x97, 0x70, 0x3F,
0x62, 0xFD, 0x22, 0x6C,
0x49, 0x35, 0x03, 0xAA,
0x99, 0xC4, 0x96, 0x3D,
0x05, 0xFE, 0x10, 0xE8,
0xFF, 0xEC, 0x9D, 0x6F,
0xA2, 0x26, 0x44, 0x7C,
0x40, 0xE5, 0x7C, 0xB0,
0xAB, 0x2A, 0xA4, 0x66,
0x1F, 0x5E, 0x74, 0x25,
0x56, 0x3A, 0x0D, 0x64,
0x8D, 0xBD, 0x8D, 0xFB,
0xF4, 0x81, 0xA3, 0xED,
0x60, 0x35, 0x2B, 0x01,
0x7E, 0xC4, 0xF8, 0x6D,
0xF0, 0x26, 0xBD, 0xFF,
0xF3, 0x31, 0xA7, 0xA7,
0xDC, 0xAF, 0x89, 0x9C,
0xFA, 0xC1, 0xC7, 0x3E,
0xC0, 0x65, 0x53, 0x9C,
0x90, 0xDD, 0xAF, 0xCC,
0x02, 0x2E, 0xF0, 0xF3,
0xB9, 0xAA, 0x5D, 0xB6,
0x07, 0xB5, 0x17, 0x2A,
0xDE, 0xF0, 0x23, 0x52,
0x01, 0x7F, 0xD3, 0xE6,
0x16, 0xB1, 0xF2, 0x90,
0x16, 0x5A, 0x79, 0xD6,
0xE9, 0xC9, 0xB8, 0x5F,
0x53, 0xE0, 0x25, 0x63,
0x5B, 0x09, 0x80, 0x00,
0x00, 0x05, 0x01, 0x85,
0xBA, 0x35, 0xA0, 0xC8,
0x79, 0xF7, 0xED, 0x47,
0x91,
}
},
};
byte[] bytes = message.GetBytes(null);
Helpers.AreArrayEqual(expected, bytes);
}
public void DoubleTcpAllocationTest()
{
var msUsername = new MsUsername()
{
Value = new byte[52],
};
using (HMACSHA1 sha1 = new HMACSHA1(key1))
{
sha1.ComputeHash(msUsername.Value, 0, msUsername.TokenBlobLength);
Array.Copy(sha1.Hash, 0, msUsername.Value, msUsername.TokenBlobLength, MsUsername.HashOfTokenBlobLength);
}
var allocate1 = new TurnMessage()
{
MessageType = MessageType.AllocateRequest,
TransactionId = TransactionId.Generate(),
MagicCookie = new MagicCookie(),
MsVersion = new MsVersion()
{
Value = 1,
},
MsUsername = msUsername,
};
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.Connect(turnIp, tcpPort);
var allocate1response = SendReceiveMessage(socket, allocate1);
Assert.AreEqual(MessageType.AllocateErrorResponse, allocate1response.MessageType);
Assert.AreEqual(401, allocate1response.ErrorCodeAttribute.ErrorCode);
var allocate2 = new TurnMessage()
{
MessageType = MessageType.AllocateRequest,
TransactionId = TransactionId.Generate(),
MagicCookie = new MagicCookie(),
MsVersion = new MsVersion()
{
Value = 1,
},
MsUsername = msUsername,
Nonce = allocate1response.Nonce,
Realm = new Realm(TurnMessageRfc.MsTurn)
{
Value = realm,
},
MessageIntegrity = new MessageIntegrity(),
};
var allocate2response = SendReceiveMessage(socket, allocate2);
Assert.AreEqual(MessageType.AllocateResponse, allocate2response.MessageType);
var allocate3response = SendReceiveMessage(socket, allocate2);
Assert.AreEqual(MessageType.AllocateResponse, allocate3response.MessageType);
}
private TurnMessage SendReceiveMessage(Socket socket, TurnMessage message)
{
SendMessage(socket, message);
return ReceiveMessage(socket);
}
private void SendTurn(TurnMessage message, ServerEndPoint local, IPEndPoint remote)
{
ServerAsyncEventArgs p;
int offset;
message.ComputeMessageLength();
GetBuffer(local, remote, message.TotalMessageLength, out p, out offset);
message.GetBytes(p.Buffer, offset, Authentificater.Key2);
turnServer.SendAsync(p);
}
private TurnMessage ProcessSetActiveDestinationRequest(Allocation allocation, TurnMessage request, IPEndPoint reflexEndPoint)
{
if (allocation == null)
throw new TurnServerException(ErrorCode.NoBinding);
if (request.DestinationAddress == null)
throw new TurnServerException(ErrorCode.BadRequest);
allocation.ActiveDestination = request.DestinationAddress.IpEndPoint;
allocation.Permissions.Permit(request.DestinationAddress.IpEndPoint);
logger.WriteInformation(string.Format("Set Active Destination: {2} --> {0} <--> {1}", allocation.Alocated.ToString(), allocation.Reflexive.ToString(), allocation.ActiveDestination.ToString()));
uint sequenceNumber = (request.MsSequenceNumber != null) ? request.MsSequenceNumber.SequenceNumber : 0;
return new TurnMessage()
{
IsAttributePaddingDisabled = true,
MessageType = MessageType.SetActiveDestinationResponse,
TransactionId = request.TransactionId,
MagicCookie = new MagicCookie(),
Realm = new Realm(TurnMessageRfc.MsTurn)
{
Ignore = true,
Value = Authentificater.Realm,
},
MsUsername = new MsUsername()
{
Ignore = true,
Value = request.MsUsername.Value,
},
//MsUsername = allocation.Username,
MessageIntegrity = new MessageIntegrity(),
MsSequenceNumber = new MsSequenceNumber()
{
ConnectionId = allocation.ConnectionId,
SequenceNumber = sequenceNumber,//allocation.SequenceNumber,
},
};
}
private TurnMessage ProcessSendRequest(Allocation allocation, TurnMessage request, ref ServerAsyncEventArgs e)
{
try
{
if (allocation == null)
throw new TurnServerException(ErrorCode.NoBinding);
if (request.Data == null || request.DestinationAddress == null)
throw new TurnServerException(ErrorCode.BadRequest);
allocation.Permissions.Permit(request.DestinationAddress.IpEndPoint);
e.LocalEndPoint = allocation.Alocated;
e.RemoteEndPoint = request.DestinationAddress.IpEndPoint;
e.Offset = request.Data.ValueRefOffset;
e.Count = request.Data.ValueRefLength;
e.ConnectionId = ServerAsyncEventArgs.AnyNewConnectionId;
peerServer.SendAsync(e);
e = null;
}
catch (Exception ex)
{
logger.WriteWarning(ex.ToString());
}
// [MS-TURN] The server MUST NOT respond to a client with either
// a Send response or a Send error response.
return null;
}
private TurnMessage ProcessAllocateRequest(ref Allocation allocation, TurnMessage request, ServerEndPoint local, IPEndPoint remote)
{
uint sequenceNumber = (request.MsSequenceNumber != null) ? request.MsSequenceNumber.SequenceNumber : 0;
{
uint lifetime = (request.Lifetime != null) ? ((request.Lifetime.Value > MaxLifetime.Seconds) ? MaxLifetime.Seconds : request.Lifetime.Value) : DefaultLifetime.Seconds;
if (allocation != null)
{
allocation.Lifetime = lifetime;
if (lifetime == 0)
logger.WriteInformation(string.Format("Update Allocation: {2} seconds {0} <--> {1}", allocation.Alocated.ToString(), allocation.Reflexive.ToString(), lifetime));
}
else
{
if (lifetime <= 0)
throw new TurnServerException(ErrorCode.NoBinding);
ProtocolPort pp = new ProtocolPort() { Protocol = local.Protocol, };
if (peerServer.Bind(ref pp) != SocketError.Success)
throw new TurnServerException(ErrorCode.ServerError);
allocation = new Allocation()
{
TransactionId = request.TransactionId,
ConnectionId = ConnectionIdGenerator.Generate(local, remote),
Local = local,
Alocated = new ServerEndPoint(pp, PublicIp),
Real = new ServerEndPoint(pp, RealIp),
Reflexive = new IPEndPoint(remote.Address, remote.Port),
Lifetime = lifetime,
};
allocations.Replace(allocation);
logger.WriteInformation(string.Format("Allocated: {0} <--> {1} for {2} seconds", allocation.Alocated.ToString(), allocation.Reflexive.ToString(), allocation.Lifetime));
}
}
return new TurnMessage()
{
IsAttributePaddingDisabled = true,
MessageType = MessageType.AllocateResponse,
TransactionId = request.TransactionId,
MagicCookie = new MagicCookie(),
MappedAddress = new MappedAddress()
{
IpAddress = allocation.Alocated.Address,
Port = (UInt16)allocation.Alocated.Port,
},
Lifetime = new Lifetime() { Value = allocation.Lifetime, },
Bandwidth = new Bandwidth() { Value = 750, },
XorMappedAddress = new XorMappedAddress(TurnMessageRfc.MsTurn)
{
IpAddress = remote.Address,
Port = (UInt16)remote.Port,
},
Realm = new Realm(TurnMessageRfc.MsTurn)
{
Ignore = true,
Value = Authentificater.Realm,
},
MsUsername = new MsUsername()
{
Ignore = true,
Value = request.MsUsername.Value,
},
//MsUsername = allocation.Username,
MessageIntegrity = new MessageIntegrity(),
MsSequenceNumber = new MsSequenceNumber()
{
ConnectionId = allocation.ConnectionId,
SequenceNumber = sequenceNumber,//allocation.SequenceNumber,
},
};
}
private bool PeerServer_Received(ServersManager<PeerConnection> s, BaseConnection с, ref ServerAsyncEventArgs e)
{
//lock (syncRoot)
{
try
{
Allocation allocation = allocations.Get(e.LocalEndPoint);
if (allocation != null)
{
if (allocation.Permissions.IsPermited(e.RemoteEndPoint))
{
allocation.TouchLifetime();
if (allocation.ActiveDestination.IsEqual(e.RemoteEndPoint))
{
if (e.LocalEndPoint.Protocol == ServerProtocol.Tcp)
{
TcpFramingHeader.GetBytes(e.Buffer, e.Offset, TcpFrameType.EndToEndData, e.BytesTransferred);
e.Count = e.OffsetOffset + e.BytesTransferred;
e.OffsetOffset = 0;
}
else
{
e.Count = e.BytesTransferred;
}
e.LocalEndPoint = allocation.Local;
e.RemoteEndPoint = allocation.Reflexive;
e.ConnectionId = ServerAsyncEventArgs.AnyConnectionId;
turnServer.SendAsync(e);
e = null;
}
else
{
TurnMessage message = new TurnMessage()
{
IsAttributePaddingDisabled = true,
MessageType = MessageType.DataIndication,
TransactionId = TransactionServer.GenerateTransactionId(),
MagicCookie = new MagicCookie(),
RemoteAddress = new RemoteAddress()
{
IpAddress = e.RemoteEndPoint.Address,
Port = (UInt16)e.RemoteEndPoint.Port,
},
Data = new Data()
{
ValueRef = e.Buffer,
ValueRefOffset = e.Offset,
ValueRefLength = e.BytesTransferred,
},
};
SendTurn(message, allocation.Local, allocation.Reflexive);
}
}
}
}
catch (Exception ex)
{
logger.WriteWarning(ex.ToString());
}
}
return true;
}
public static TurnMessage Parse(byte[] bytes, int startIndex, int length, TurnMessageRfc rfc)
{
TurnMessage message = new TurnMessage();
message.ParseHeader(bytes, startIndex, length);
message.ParseAttributes(bytes, startIndex, length, rfc);
return message;
}
public void SetResponse(TurnMessage newResponse)
{
lock (sync)
{
response = newResponse;
}
}
public void ParseTest4()
{
byte[] bytes = new byte[]
{
0x00, 0x01, 0x00, 0x60, // Request type and message length
0x21, 0x12, 0xa4, 0x42, // Magic cookie
0x78, 0xad, 0x34, 0x33, // }
0xc6, 0xad, 0x72, 0xc0, // } Transaction ID
0x29, 0xda, 0x41, 0x2e, // }
0x00, 0x06, 0x00, 0x12, // USERNAME attribute header
0xe3, 0x83, 0x9e, 0xe3, // }
0x83, 0x88, 0xe3, 0x83, // }
0xaa, 0xe3, 0x83, 0x83, // } Username value (18 bytes) and padding (2 bytes)
0xe3, 0x82, 0xaf, 0xe3, // }
0x82, 0xb9, 0x00, 0x00, // }
0x00, 0x15, 0x00, 0x1c, // NONCE attribute header
0x66, 0x2f, 0x2f, 0x34, // }
0x39, 0x39, 0x6b, 0x39, // }
0x35, 0x34, 0x64, 0x36, // }
0x4f, 0x4c, 0x33, 0x34, // } Nonce value
0x6f, 0x4c, 0x39, 0x46, // }
0x53, 0x54, 0x76, 0x79, // }
0x36, 0x34, 0x73, 0x41, // }
0x00, 0x14, 0x00, 0x0b, // REALM attribute header
0x65, 0x78, 0x61, 0x6d, // }
0x70, 0x6c, 0x65, 0x2e, // } Realm value (11 bytes) and padding (1 byte)
0x6f, 0x72, 0x67, 0x00, // }
0x00, 0x08, 0x00, 0x14, // MESSAGE-INTEGRITY attribute header
0xf6, 0x70, 0x24, 0x65, // }
0x6d, 0xd6, 0x4a, 0x3e, // }
0x02, 0xb8, 0xe0, 0x71, // } HMAC-SHA1 fingerprint
0x2e, 0x85, 0xc9, 0xa2, // }
0x8c, 0xa8, 0x96, 0x66, // }
};
string password = "******";
string username = "******";
string nonce = "f//499k954d6OL34oL9FSTvy64sA";
string realm = "example.org";
TurnMessage message = TurnMessage.Parse(bytes, TurnMessageRfc.Rfc5389);
Assert.AreEqual(username, message.Username.Value);
Assert.AreEqual(nonce, message.Nonce.Value);
Assert.AreEqual(realm, message.Realm.Value);
byte[] messageIntegrity = message.ComputeMessageIntegrity(password, true);
Helpers.AreArrayEqual(messageIntegrity, message.MessageIntegrity.Value);
Assert.IsTrue(message.IsMessageIntegrityValid(password, true));
byte[] actual = message.GetBytes(password, true);
Helpers.AreArrayEqual(bytes, actual);
TurnMessage message2 = new TurnMessage()
{
MessageType = MessageType.BindingRequest,
TransactionId = message.TransactionId,
Username = message.Username,
Nonce = message.Nonce,
Realm = message.Realm,
MessageIntegrity = new MessageIntegrity(),
};
byte[] actual2 = message2.GetBytes(password, true);
Helpers.AreArrayEqual(bytes, actual2);
}
private void SendMessage(Socket socket, TurnMessage message)
{
byte[] buffer1 = new byte[4096];
message.ComputeMessageLength();
message.GetBytes(buffer1, TcpFramingHeader.TcpFramingHeaderLength, key2);
TcpFramingHeader.GetBytes(buffer1, 0, TcpFrameType.ControlMessage, message.TotalMessageLength);
int size = TcpFramingHeader.TcpFramingHeaderLength + message.TotalMessageLength;
if (socket.Send(buffer1, size, SocketFlags.None) != size)
throw new Exception("Send failed!");
}
private ErrorCode? ValidateRequest(TurnMessage request)
{
if (request.MessageIntegrity == null)
return ErrorCode.Unauthorized;
if (request.MessageType == MessageType.AllocateRequest)
{
if (request.Realm == null)
return ErrorCode.MissingRealm;
if (request.Nonce == null)
return ErrorCode.MissingNonce;
if (IsValidNonce(request.Nonce.Value) == false)
return ErrorCode.StaleNonce;
}
if (request.MsUsername == null)
return ErrorCode.MissingUsername;
if (request.IsValidMsUsername(Key1) == false)
return ErrorCode.UnknownUsername;
if (request.Realm != null)
{
if (request.Realm.Value != Realm)
return ErrorCode.MissingRealm;
}
else
request.Realm = realm;
if (request.IsValidMessageIntegrity(Key2) == false)
return ErrorCode.IntegrityCheckFailure;
return null;
}