/usr/share/doc/libio-async-perl/examples/netcat-client.pl is in libio-async-perl 0.70-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | #!/usr/bin/perl
use strict;
use warnings;
use IO::Async::Loop;
use IO::Async::Stream;
my $CRLF = "\x0d\x0a"; # because \r\n is not portable
my $HOST = shift @ARGV or die "Need HOST";
my $PORT = shift @ARGV or die "Need PORT";
my $loop = IO::Async::Loop->new;
my $socket = $loop->connect(
host => $HOST,
service => $PORT,
socktype => 'stream',
)->get;
# $socket is just an IO::Socket reference
my $peeraddr = $socket->peerhost . ":" . $socket->peerport;
print STDERR "Connected to $peeraddr\n";
# We need to create a cross-connected pair of Streams. Can't do that
# easily without a temporary variable
my ( $socketstream, $stdiostream );
$socketstream = IO::Async::Stream->new(
handle => $socket,
on_read => sub {
my ( undef, $buffref, $eof ) = @_;
while( $$buffref =~ s/^(.*)$CRLF// ) {
$stdiostream->write( $1 . "\n" );
}
return 0;
},
on_closed => sub {
print STDERR "Closed connection to $peeraddr\n";
$stdiostream->close_when_empty;
},
);
$loop->add( $socketstream );
$stdiostream = IO::Async::Stream->new_for_stdio(
on_read => sub {
my ( undef, $buffref, $eof ) = @_;
while( $$buffref =~ s/^(.*)\n// ) {
$socketstream->write( $1 . $CRLF );
}
return 0;
},
on_closed => sub {
$socketstream->close_when_empty;
},
);
$loop->add( $stdiostream );
$loop->await_all( $socketstream->new_close_future, $stdiostream->new_close_future );
|