#!/usr/bin/perl
#Simple program to give me my IP address wherever I am.
#Also extended to give other stuff sent by the browser.
use Socket;
print "Content-Type: text/plain\r\n\r\n"; #CGI carp
print "Referer: $ENV{HTTP_REFERER}\r\n"; #Referrer (designers of HTTP can't spell)
print "User Agent: $ENV{HTTP_USER_AGENT}\r\n"; #Browser software
print "Address: $ENV{REMOTE_ADDR}\r\n"; #IP address of peer
$addr = inet_aton($ENV{REMOTE_ADDR});
$name = gethostbyaddr($addr, AF_INET);
print "Hostname: $name\r\n"; #Hostname of peer