tcpnews

一个很好的unix网络编程框架

#! /usr/bin/perl5
use Socket;
$host = inet_aton( 'nntp.ix.netcom.com') || die "host: $!";
$port = getservbyname( 'nntp', 'tcp' ) || die "bad port";
socket( S, PF_INET, SOCK_STREAM, 0 ) || die "socket: $!";
connect( S, sockaddr_in( $port, $host ) ) || die "connect: $!";
select( S );
$| = 1;
select( STDOUT );
print S "group comp.protocols.tcp-ip\r\n";
while ( $line = <S> )
{
	last if $line =~ /^211/;
}
($rc, $total, $start, $end ) = split( /\s/, $line );
print S "xover $start-$end\nquit\r\n";
while ( $line = <S> )
{
	( $no, $sub, $auth, $date ) = split( /\t/, $line );
	print "$no, $sub, $date\n" if $sub =~ /TCP|UDP/;
}
close( S );