public override async ValueTask <IEnumerable <IConnector> > ConnectorsAsync(
EndpointSelectionType endptSelection)
{
Instrumentation.IObserver?observer = Communicator.Observer?.GetEndpointLookupObserver(this);
observer?.Attach();
try
{
INetworkProxy?networkProxy = Communicator.NetworkProxy;
int ipVersion = Communicator.IPVersion;
if (networkProxy != null)
{
networkProxy = await networkProxy.ResolveHostAsync(ipVersion).ConfigureAwait(false);
if (networkProxy != null)
{
ipVersion = networkProxy.GetIPVersion();
}
}
IEnumerable <IPEndPoint> addrs = await Network.GetAddressesForClientEndpointAsync(Host, Port, ipVersion,
endptSelection, Communicator.PreferIPv6).ConfigureAwait(false);
return(addrs.Select(item => CreateConnector(item, networkProxy)));
}
catch (Exception ex)
{
observer?.Failed(ex.GetType().FullName ?? "System.Exception");
throw;
}
finally
{
observer?.Detach();
}
}
public async ValueTask <INetworkProxy> ResolveHostAsync(CancellationToken cancel)
{
Debug.Assert(_host != null);
// TODO can we support multiple addresses for a socks proxy
IEnumerable <IPEndPoint> addresses =
await Network.GetAddressesForClientEndpointAsync(_host,
_port,
IPVersion,
cancel).ConfigureAwait(false);
return(new HTTPNetworkProxy(addresses.First()));
}
public async ValueTask <INetworkProxy> ResolveHostAsync(CancellationToken cancel)
{
Debug.Assert(_host != null);
// Get addresses in random order and use the first one
IEnumerable <IPEndPoint> addresses =
await Network.GetAddressesForClientEndpointAsync(_host,
_port,
IPVersion,
EndpointSelectionType.Random,
cancel).ConfigureAwait(false);
return(new SOCKSNetworkProxy(addresses.First()));
}
