HTTP

Lien: http://fr.wikipedia.org/wiki/Hypertext_Transfer_Protocol

Vu sous l'angle du protocole et de la programmation.

get

HTTP 0

Simple:

$ echo "GET /" | nc thierry-jaouen.fr 80
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="http://www.thierry-jaouen.fr">here</a>.</p>
</body></html>

Pareil mais en plus precis:

$ echo -n -e "GET /\n" | nc thierry-jaouen.fr 80

HTTP 1

Mais tout le monde parle en HTTP 1 de nos jours… donc:

$ echo -n -e "GET / HTTP/1.0\n\n" | nc thierry-jaouen.fr 80
HTTP/1.1 301 Moved Permanently
Date: Fri, 22 Jan 2010 12:18:02 GMT
Server: Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny4 with Suhosin-Patch mod_ssl/2.2.9 OpenSSL/0.9.8g mod_musicindex/1.2.2 mod_perl/2.0.4 Perl/v5.10.0
Location: http://www.thierry-jaouen.fr
Content-Length: 236
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="http://www.thierry-jaouen.fr">here</a>.</p>
</body></html>

Ce qui retourne un peu plus d'information sur le serveur HTTP.

host

Changez d'“hote” (le nom de la machine qu'on vise derrière l'ip unique)…

Par exemple, on veut atteindre l'hôte dvdrip.fr :

$ echo -n -e "GET / HTTP/1.0\nHost: dvdrip.fr\n\n" | nc thierry-jaouen.fr 80
HTTP/1.1 302 Found
Date: Fri, 22 Jan 2010 12:21:28 GMT
Server: Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny4 with Suhosin-Patch mod_ssl/2.2.9 OpenSSL/0.9.8g mod_musicindex/1.2.2 mod_perl/2.0.4 Perl/v5.10.0
Location: http://dvdrip.fr/dvdrip.html
Content-Length: 213
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="http://dvdrip.fr/dvdrip.html">here</a>.</p>
</body></html>