#!/usr/bin/perl
# file: web_fetch.pl
# Figure 5.5: Simple web page fetcher

use strict;
use IO::Socket qw(:DEFAULT :crlf);
$/ = CRLF . CRLF;
my $data;

my $url = shift or die "Usage: web_fetch.pl <URL>\n";

my ($host,$path) = $url=~m!^http://([^/]+)(/[^\#]*)! 
  or die "Invalid URL.\n";

my $socket = IO::Socket::INET->new(PeerAddr => $host, PeerPort => 'http(80)')
  or die "Can't connect: $!";

print $socket "GET $path HTTP/1.0",CRLF,CRLF;

my $header = <$socket>;    # read the header
$header =~ s/$CRLF/\n/g;   # replace CRLF with logical newline
print $header;

print $data while read($socket,$data,1024) > 0;