public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x0b, 0x00, 0x28, 0x21, 0x12, 0xa4, 0x42, 0x3d, 0x29,
0x0c, 0x81, 0x83, 0x69, 0xa5, 0x48, 0x36, 0xfa, 0x52, 0x6c,
0x80, 0x22, 0x00, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x00, 0x08,
0x00, 0x14, 0xf9, 0xa4, 0x0f, 0x85, 0x74, 0xa1, 0x45, 0x91,
0xb9, 0x71, 0x12, 0x09, 0x53, 0x15, 0x61, 0xc6, 0x4e, 0xec,
0x82, 0x07, 0x80, 0x28, 0x00, 0x04, 0xd1, 0xf8, 0x6c, 0xd8,
};
using (var stream = new MemoryStream(bytes))
{
var response = await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0x3d, 0x29, 0x0c, 0x81, 0x83, 0x69, 0xa5, 0x48, 0x36, 0xfa,
0x52, 0x6c,
},
response.TransactionId);
Assert.IsType <ConnectionBindSuccessResponse>(response);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x14, 0x00, 0x2c, 0x21, 0x12, 0xa4, 0x42, 0x0c, 0x85,
0x2c, 0x24, 0x1a, 0x87, 0x02, 0xc9, 0xa8, 0x2c, 0x0b, 0xad,
0x00, 0x09, 0x00, 0x18, 0x00, 0x00, 0x04, 0x25, 0x49, 0x6e,
0x76, 0x61, 0x6c, 0x69, 0x64, 0x20, 0x61, 0x6c, 0x6c, 0x6f,
0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x80, 0x22,
0x00, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x80, 0x28, 0x00, 0x04,
0x88, 0x34, 0xf9, 0x1e,
};
using (var stream = new MemoryStream(bytes))
{
var response = (RefreshErrorResponse)await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0x0c, 0x85, 0x2c, 0x24, 0x1a, 0x87, 0x02, 0xc9, 0xa8, 0x2c,
0x0b, 0xad,
},
response.TransactionId);
Assert.Equal(437, response.ErrorCode);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x08, 0x00, 0x28, 0x21, 0x12, 0xa4, 0x42, 0xf8, 0x57,
0xe3, 0x50, 0x4c, 0x8f, 0xd3, 0x9d, 0xb8, 0xca, 0x69, 0x83,
0x80, 0x22, 0x00, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x00, 0x08,
0x00, 0x14, 0xee, 0x56, 0x3a, 0x74, 0x03, 0x16, 0x80, 0xc4,
0xe5, 0x2f, 0xfa, 0x37, 0x1e, 0x30, 0x42, 0xa6, 0x45, 0x15,
0x8e, 0x84, 0x80, 0x28, 0x00, 0x04, 0xa0, 0x39, 0xc6, 0x25,
};
using (var stream = new MemoryStream(bytes))
{
var response = await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0xf8, 0x57, 0xe3, 0x50, 0x4c, 0x8f, 0xd3, 0x9d, 0xb8, 0xca,
0x69, 0x83,
},
response.TransactionId);
Assert.IsType <CreatePermissionSuccessResponse>(response);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x04, 0x00, 0x30, 0x21, 0x12, 0xa4, 0x42, 0xaf, 0x9d,
0x6b, 0xa5, 0x71, 0x17, 0xd7, 0xf2, 0x0a, 0x3a, 0x94, 0x7b,
0x00, 0x0d, 0x00, 0x04, 0x00, 0x00, 0x03, 0x09, 0x80, 0x22,
0x00, 0x1a, 0x43, 0x6f, 0x74, 0x75, 0x72, 0x6e, 0x2d, 0x34,
0x2e, 0x35, 0x2e, 0x30, 0x2e, 0x38, 0x20, 0x27, 0x64, 0x61,
0x6e, 0x20, 0x45, 0x69, 0x64, 0x65, 0x72, 0x27, 0x74, 0x75,
0x80, 0x28, 0x00, 0x04, 0xa9, 0x72, 0xb1, 0xa3,
};
using (var stream = new MemoryStream(bytes))
{
var response =
(RefreshSuccessResponse)await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0xaf, 0x9d, 0x6b, 0xa5, 0x71, 0x17, 0xd7, 0xf2, 0x0a, 0x3a,
0x94, 0x7b,
},
response.TransactionId);
Assert.Equal(777, response.Lifetime);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x03, 0x00, 0x48, 0x21, 0x12, 0xa4, 0x42, 0xf5, 0xdb,
0xe7, 0xc1, 0x2a, 0x74, 0xbe, 0xf9, 0x8b, 0x16, 0x56, 0x3e,
0x00, 0x16, 0x00, 0x08, 0x00, 0x01, 0xc1, 0x9e, 0x17, 0x53,
0x9b, 0x96, 0x00, 0x20, 0x00, 0x08, 0x00, 0x01, 0xaa, 0xaa,
0xf2, 0xa2, 0x25, 0x18, 0x00, 0x0d, 0x00, 0x04, 0x00, 0x00,
0x03, 0x09, 0x80, 0x22, 0x00, 0x04, 0x4e, 0x6f, 0x6e, 0x65,
0x00, 0x08, 0x00, 0x14, 0x2b, 0x24, 0xd2, 0x75, 0xb9, 0x91,
0x34, 0xd6, 0x48, 0x51, 0xc2, 0x15, 0x17, 0xf5, 0x65, 0x90,
0x98, 0xfa, 0x9f, 0x7d, 0x80, 0x28, 0x00, 0x04, 0x6c, 0xcc,
0x0c, 0x46,
};
using (var stream = new MemoryStream(bytes))
{
var response =
(AllocateSuccessResponse)await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0xf5, 0xdb, 0xe7, 0xc1, 0x2a, 0x74, 0xbe, 0xf9, 0x8b, 0x16,
0x56, 0x3e,
},
response.TransactionId);
Assert.Equal(
new IPEndPoint(IPAddress.Parse("54.65.63.212"), 57484),
response.RelayedEndPoint);
}
}
private async Task ProcessMessage(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested || _control.Connected)
{
NetworkStream stream = _control.GetStream();
try
{
StunMessage message;
try
{
message = await StunMessage.ParseAsync(stream, cancellationToken);
_logger.Debug("Stun Message is: {message}", message);
}
catch (TurnClientException e)
{
_logger.Error(e, "Failed to parse StunMessage. {e}", e);
ClearResponses();
break;
}
if (message is ConnectionAttempt attempt)
{
await _connectionAttempts.EnqueueAsync(attempt, cancellationToken);
}
else if (_responses.TryGetValue(
message.TransactionId,
out TaskCompletionSource <StunMessage> tcs))
{
// tcs may be already canceled.
tcs.TrySetResult(message);
}
}
catch (Exception e)
{
_logger.Error(
e,
$"An unexpected exception occurred during {nameof(ProcessMessage)}(): {e}"
);
}
}
_logger.Debug($"{nameof(ProcessMessage)} is ended. Connected: {_control.Connected}");
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x01, 0x00, 0x0c, 0x21, 0x12, 0xa4, 0x42, 0xb9, 0x5e,
0x6c, 0xcd, 0xa3, 0x84, 0x74, 0xfb, 0x43, 0xe9, 0xae, 0xb1,
0x00, 0x20, 0x00, 0x08, 0x00, 0x01, 0xf2, 0x6f, 0xf2, 0xa2,
0x25, 0x18,
};
using (var stream = new MemoryStream(bytes))
{
var response =
(BindingSuccessResponse)await StunMessage.ParseAsync(stream);
Assert.Equal(
new IPEndPoint(IPAddress.Parse("211.176.129.90"), 54141),
response.MappedAddress);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x01, 0x13, 0x00, 0x48, 0x21, 0x12, 0xa4, 0x42, 0xee, 0x29,
0xdd, 0x2d, 0x7a, 0xe9, 0x9c, 0xf4, 0x00, 0x82, 0xf2, 0x5e,
0x00, 0x09, 0x00, 0x10, 0x00, 0x00, 0x04, 0x01, 0x55, 0x6e,
0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64,
0x00, 0x15, 0x00, 0x10, 0x37, 0x35, 0x64, 0x34, 0x35, 0x34,
0x31, 0x39, 0x63, 0x33, 0x39, 0x33, 0x34, 0x33, 0x66, 0x65,
0x00, 0x14, 0x00, 0x0a, 0x74, 0x77, 0x69, 0x6c, 0x69, 0x6f,
0x2e, 0x63, 0x6f, 0x6d, 0x03, 0x6d, 0x80, 0x22, 0x00, 0x04,
0x4e, 0x6f, 0x6e, 0x65, 0x80, 0x28, 0x00, 0x04, 0x6e, 0x1e,
0x55, 0x49,
};
using (var stream = new MemoryStream(bytes))
{
var response =
(AllocateErrorResponse)await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[]
{
0xee, 0x29, 0xdd, 0x2d, 0x7a, 0xe9, 0x9c, 0xf4, 0x00, 0x82,
0xf2, 0x5e,
},
response.TransactionId);
Assert.Equal(401, response.ErrorCode);
Assert.Equal("twilio.com", response.Realm);
Assert.Equal(
new byte[]
{
0x37, 0x35, 0x64, 0x34, 0x35, 0x34,
0x31, 0x39, 0x63, 0x33, 0x39, 0x33,
0x34, 0x33, 0x66, 0x65,
},
response.Nonce
);
}
}
public async Task ParseBytes()
{
var bytes = new byte[]
{
0x00, 0x1c, 0x00, 0x24, 0x21, 0x12, 0xa4, 0x42, 0x8e, 0x3b,
0x82, 0x73, 0xda, 0x6f, 0xc3, 0xa9, 0x1e, 0x88, 0x8f, 0x0b,
0x00, 0x2a, 0x00, 0x04, 0x21, 0x5a, 0x86, 0x01, 0x00, 0x12,
0x00, 0x08, 0x00, 0x01, 0x60, 0xc6, 0x17, 0x53, 0x9b, 0x96,
0x80, 0x22, 0x00, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x80, 0x28,
0x00, 0x04, 0x58, 0x07, 0xfb, 0x8e,
};
using (var stream = new MemoryStream(bytes))
{
var response =
(ConnectionAttempt)await StunMessage.ParseAsync(stream);
Assert.Equal(
new byte[] { 0x21, 0x5a, 0x86, 0x01 },
response.ConnectionId);
}
}
public async Task <NetworkStream> AcceptRelayedStreamAsync(
CancellationToken cancellationToken = default(CancellationToken))
{
while (true)
{
ConnectionAttempt attempt =
await _connectionAttempts.DequeueAsync(cancellationToken);
byte[] id = attempt.ConnectionId;
var bindRequest = new ConnectionBindRequest(id);
var relayedClient = new TcpClient(_host, _port);
_relayedClients.Add(relayedClient);
NetworkStream relayedStream = relayedClient.GetStream();
try
{
await SendMessageAsync(relayedStream, bindRequest, cancellationToken);
StunMessage bindResponse =
await StunMessage.ParseAsync(relayedStream, cancellationToken);
if (bindResponse is ConnectionBindSuccessResponse)
{
return(relayedStream);
}
throw new TurnClientException("ConnectionBind failed.", bindResponse);
}
catch (IOException e)
{
_logger.Warning(
e,
"The connection seems to disconnect before parsing; ignored."
);
}
}
}
public async Task <bool> IsConnectable(
CancellationToken cancellationToken = default(CancellationToken))
{
try
{
using var client = new TcpClient();
#pragma warning disable PC001 // API not supported on all platforms
client.Connect(_host, _port);
#pragma warning restore PC001 // API not supported on all platforms
NetworkStream stream = client.GetStream();
var request = new BindingRequest();
var asBytes = request.Encode(this);
await stream.WriteAsync(asBytes, 0, asBytes.Length, cancellationToken);
await StunMessage.ParseAsync(stream, cancellationToken);
return(true);
}
catch (Exception)
{
return(false);
}
}