public virtual async Task ConnectAsync(string host, int port)
{
AssertSocket();
IPAddress[] adds = await Dns.GetHostAddressesAsync(host).ConfigureAwait(false);
IPAddress ep = TcpClientAdapterHelper.GetMatchingHost(adds, _sock.AddressFamily);
if (ep == default(IPAddress))
{
throw new ArgumentException($"No ip address could be resolved for {host}");
}
await ConnectAsync(ep, port).ConfigureAwait(false);
}
public virtual async Task ConnectAsync(string host, int port)
{
AssertSocket();
IPAddress[] adds = await Dns.GetHostAddressesAsync(host).ConfigureAwait(false);
IPAddress ep = TcpClientAdapterHelper.GetMatchingHost(adds, _sock.AddressFamily);
if (ep == default(IPAddress))
{
throw new ArgumentException("No ip address could be resolved for " + host);
}
#if NET461
await Task.Run(() => _sock.Connect(ep, port)).ConfigureAwait(false);
#else
await _sock.ConnectAsync(ep, port).ConfigureAwait(false);
#endif
}
public SocketFrameHandler(AmqpTcpEndpoint endpoint,
Func <AddressFamily, ITcpClient> socketFactory,
TimeSpan connectionTimeout, TimeSpan readTimeout, TimeSpan writeTimeout)
{
Endpoint = endpoint;
_frameHeaderBuffer = new byte[6];
var channel = Channel.CreateUnbounded <ReadOnlyMemory <byte> >(
new UnboundedChannelOptions
{
AllowSynchronousContinuations = false,
SingleReader = true,
SingleWriter = false
});
_channelReader = channel.Reader;
_channelWriter = channel.Writer;
// Resolve the hostname to know if it's even possible to even try IPv6
IPAddress[] adds = Dns.GetHostAddresses(endpoint.HostName);
IPAddress ipv6 = TcpClientAdapterHelper.GetMatchingHost(adds, AddressFamily.InterNetworkV6);
if (ipv6 == default(IPAddress))
{
if (endpoint.AddressFamily == AddressFamily.InterNetworkV6)
{
throw new ConnectFailureException("Connection failed", new ArgumentException($"No IPv6 address could be resolved for {endpoint.HostName}"));
}
}
else if (ShouldTryIPv6(endpoint))
{
try
{
_socket = ConnectUsingIPv6(new IPEndPoint(ipv6, endpoint.Port), socketFactory, connectionTimeout);
}
catch (ConnectFailureException)
{
// We resolved to a ipv6 address and tried it but it still didn't connect, try IPv4
_socket = null;
}
}
if (_socket == null)
{
IPAddress ipv4 = TcpClientAdapterHelper.GetMatchingHost(adds, AddressFamily.InterNetwork);
if (ipv4 == default(IPAddress))
{
throw new ConnectFailureException("Connection failed", new ArgumentException($"No ip address could be resolved for {endpoint.HostName}"));
}
_socket = ConnectUsingIPv4(new IPEndPoint(ipv4, endpoint.Port), socketFactory, connectionTimeout);
}
Stream netstream = _socket.GetStream();
netstream.ReadTimeout = (int)readTimeout.TotalMilliseconds;
netstream.WriteTimeout = (int)writeTimeout.TotalMilliseconds;
if (endpoint.Ssl.Enabled)
{
try
{
netstream = SslHelper.TcpUpgrade(netstream, endpoint.Ssl);
}
catch (Exception)
{
Close();
throw;
}
}
_reader = new BufferedStream(netstream, _socket.Client.ReceiveBufferSize);
_writer = new BufferedStream(netstream, _socket.Client.SendBufferSize);
WriteTimeout = writeTimeout;
_writerTask = Task.Run(WriteLoop, CancellationToken.None);
}