public async Task <NetworkStream> AcceptRelayedStreamAsync()
{
NetworkStream stream = _control.GetStream();
while (true)
{
_connectAttempted =
new TaskCompletionSource <ConnectionAttempt>();
ConnectionAttempt attempt = await _connectAttempted.Task;
byte[] id = attempt.ConnectionId;
var relayedClient = new TcpClient(_host, _port);
NetworkStream relayedStream = relayedClient.GetStream();
var bindRequest = new ConnectionBindRequest(id);
await SendMessageAsync(relayedStream, bindRequest);
StunMessage bindResponse =
await StunMessage.Parse(relayedStream);
if (bindResponse is ConnectionBindSuccessResponse)
{
_relayedClients.Add(relayedClient);
return(relayedStream);
}
throw new TurnClientException(
"ConnectionBind failed.",
bindResponse);
}
}
public async Task <NetworkStream> AcceptRelayedStreamAsync(
CancellationToken cancellationToken = default(CancellationToken))
{
while (true)
{
EnsureConnection();
ConnectionAttempt attempt =
await _connectionAttempts.DequeueAsync(cancellationToken);
byte[] id = attempt.ConnectionId;
var bindRequest = new ConnectionBindRequest(id);
var relayedClient = new TcpClient(_host, _port);
NetworkStream relayedStream = relayedClient.GetStream();
try
{
await SendMessageAsync(relayedStream, bindRequest, cancellationToken);
StunMessage bindResponse = await StunMessage.Parse(relayedStream);
if (bindResponse is ConnectionBindSuccessResponse)
{
_relayedClients.Add(relayedClient);
return(relayedStream);
}
throw new TurnClientException("ConnectionBind failed.", bindResponse);
}
catch (IOException e)
{
Log.Warning(e, "The connection seems to disconnect before parsing; ignored.");
}
}
}
public void EncodeToBytes()
{
var connectionId = new byte[] { 0x1e, 0xe2, 0x38, 0x02 };
var request = new ConnectionBindRequest(connectionId)
{
TransactionId = new byte[]
{
0x3d, 0x29, 0x0c, 0x81, 0x83, 0x69, 0xa5, 0x48, 0x36, 0xfa,
0x52, 0x6c,
},
};
var ctx = new TestStunContext()
{
Username = "******",
Password = "******",
Realm = "twilio.com",
Nonce = new byte[]
{
0x64, 0x32, 0x34, 0x35, 0x39, 0x35, 0x35, 0x39, 0x61, 0x33,
0x38, 0x37, 0x34, 0x63, 0x39, 0x61,
},
};
Assert.Equal(
new byte[]
{
0x00, 0x0b, 0x00, 0x90, 0x21, 0x12, 0xa4, 0x42, 0x3d, 0x29,
0x0c, 0x81, 0x83, 0x69, 0xa5, 0x48, 0x36, 0xfa, 0x52, 0x6c,
0x00, 0x2a, 0x00, 0x04, 0x1e, 0xe2, 0x38, 0x02, 0x00, 0x06,
0x00, 0x40, 0x61, 0x65, 0x30, 0x36, 0x33, 0x33, 0x63, 0x64,
0x35, 0x38, 0x62, 0x61, 0x30, 0x39, 0x37, 0x61, 0x31, 0x31,
0x36, 0x37, 0x63, 0x36, 0x64, 0x32, 0x63, 0x63, 0x34, 0x65,
0x32, 0x33, 0x36, 0x64, 0x62, 0x35, 0x32, 0x32, 0x35, 0x36,
0x61, 0x34, 0x30, 0x64, 0x35, 0x36, 0x35, 0x66, 0x31, 0x31,
0x65, 0x64, 0x66, 0x37, 0x36, 0x63, 0x30, 0x32, 0x64, 0x31,
0x33, 0x64, 0x62, 0x39, 0x33, 0x63, 0x00, 0x15, 0x00, 0x10,
0x64, 0x32, 0x34, 0x35, 0x39, 0x35, 0x35, 0x39, 0x61, 0x33,
0x38, 0x37, 0x34, 0x63, 0x39, 0x61, 0x00, 0x14, 0x00, 0x0a,
0x74, 0x77, 0x69, 0x6c, 0x69, 0x6f, 0x2e, 0x63, 0x6f, 0x6d,
0x00, 0x00, 0x00, 0x08, 0x00, 0x14, 0x5e, 0xc8, 0x5b, 0xaa,
0x0c, 0x7e, 0x44, 0x0d, 0xca, 0x22, 0xa6, 0xaa, 0x3a, 0xf7,
0x0f, 0x4b, 0x5f, 0xe3, 0x09, 0x63, 0x80, 0x28, 0x00, 0x04,
0x22, 0x0e, 0x0e, 0x02,
},
request.Encode(ctx));
}
