November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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14.9. Implementacja klienta telnet
Problem
Chcemy połączyć się z usługą telnet lub użyć telnetu w celu uzyskania niskopoziomowego dostępu do innego serwera.
Rozwiązanie
Można skorzystać z modułu Net::Telnet dostępnego w standardowej bibliotece Ruby.
W kodzie zamieszczonym poniżej wykorzystano obiekt Telnet do symulowania klienta HTTP. Skryt przesyła żądanie HTTP do serwera WWW pod adresem http://www.oreilly.com. Każdy fragment danych odebrany z serwera WWW jest przekazywany do bloku kodowego, a rozmiar tego fragmentu dodawany jest do ogólnej ilości odczytanych bajtów. Na koniec serwer WWW przestaje przesyłać dane i następuje zakończenie sesji telnet z powodu przekroczenia limitu czasu.
require 'net/telnet' webserver = Net::Telnet::new('Host' ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.