public static IObservable <Either <Socket, byte[]> > AcceptObservable(this Socket socket, int receiveSize)
{
Contract.Requires(socket != null);
Contract.Requires(receiveSize >= 0);
Contract.Ensures(Contract.Result <IObservable <Either <Socket, byte[]> > >() != null);
var args = new SocketAsyncEventArgs();
args.SetBuffer(0, receiveSize);
return(socket
.AcceptObservableWithBuffer(args)
.Finally(args.Dispose));
}