public static IObservable <IEnumerable <desktop> > GetHostListAsync(
this ICanListService service, string hostname, string username, string password)
{
IPAddress address;
if (IPAddress.TryParse(hostname, out address))
{
return(service.GetHostListAsync(address, new NetworkCredential(username, password)));
}
else
{
var lookup =
Observable.FromAsyncPattern <string, IPHostEntry>
(Dns.BeginGetHostEntry, Dns.EndGetHostEntry);
return
(from l in lookup(hostname)
.Assert(l => l.AddressList.Count() > 0, l => new Exception("Unknown Host"))
let addr = l.AddressList.First()
from list in service.GetHostListAsync(addr, username, password)
select list);
}
}
public static IObservable <IEnumerable <desktop> > GetHostListAsync(
this ICanListService service, IPAddress address, string username, string password)
{
return(service.GetHostListAsync(address, new NetworkCredential(username, password)));
}
