internal SocketToken BeginConnect(EndPoint endpoint, ISocketCallback callback, ConnectionMultiplexer multiplexer, TextWriter log)
{
var addressFamily = endpoint.AddressFamily == AddressFamily.Unspecified ? AddressFamily.InterNetwork : endpoint.AddressFamily;
var socket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
SetFastLoopbackOption(socket);
socket.NoDelay = true;
try
{
CompletionType connectCompletionType = CompletionType.Any;
this.ShouldForceConnectCompletionType(ref connectCompletionType);
var formattedEndpoint = Format.ToString(endpoint);
var tuple = Tuple.Create(socket, callback);
if (endpoint is DnsEndPoint)
{
// A work-around for a Mono bug in BeginConnect(EndPoint endpoint, AsyncCallback callback, object state)
DnsEndPoint dnsEndpoint = (DnsEndPoint)endpoint;
#if CORE_CLR
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
socket.ConnectAsync(dnsEndpoint.Host, dnsEndpoint.Port).ContinueWith(t =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(t, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
});
#else
CompletionTypeHelper.RunWithCompletionType(
cb => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(dnsEndpoint.Host, dnsEndpoint.Port, cb, tuple));
},
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
#endif
}
else
{
#if CORE_CLR
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
socket.ConnectAsync(endpoint).ContinueWith(t =>
{
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(t, multiplexer, log, tuple);
});
#else
CompletionTypeHelper.RunWithCompletionType(
cb => {
multiplexer.LogLocked(log, "BeginConnect: {0}", formattedEndpoint);
return(socket.BeginConnect(endpoint, cb, tuple));
},
ar => {
multiplexer.LogLocked(log, "EndConnect: {0}", formattedEndpoint);
EndConnectImpl(ar, multiplexer, log, tuple);
multiplexer.LogLocked(log, "Connect complete: {0}", formattedEndpoint);
},
connectCompletionType);
#endif
}
}
catch (NotImplementedException ex)
{
if (!(endpoint is IPEndPoint))
{
throw new InvalidOperationException("BeginConnect failed with NotImplementedException; consider using IP endpoints, or enable ResolveDns in the configuration", ex);
}
throw;
}
var token = new SocketToken(socket);
return(token);
}