74 lines
1.7 KiB
Perl
74 lines
1.7 KiB
Perl
#!/usr/bin/perl
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use v5.14;
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use warnings;
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use Errno qw( EINPROGRESS );
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use IO::Poll;
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use IO::Socket::IP;
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use Net::LibAsyncNS;
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use Socket qw( SOCK_STREAM );
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my $host = shift @ARGV or die "Need HOST\n";
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my $service = shift @ARGV or die "Need SERVICE\n";
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my $poll = IO::Poll->new;
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my $asyncns = Net::LibAsyncNS->new( 1 );
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my $asyncns_fh = $asyncns->new_handle_for_fd;
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my $q = $asyncns->getaddrinfo( $host, $service, { socktype => SOCK_STREAM } );
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$poll->mask( $asyncns_fh => POLLIN );
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while( !$q->isdone ) {
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$poll->poll( undef );
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if( $poll->events( $asyncns_fh ) ) {
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$asyncns->wait( 0 );
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}
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}
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$poll->mask( $asyncns_fh => 0 );
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my ( $err, @peeraddrinfo ) = $asyncns->getaddrinfo_done( $q );
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$err and die "getaddrinfo() - $!";
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my $socket = IO::Socket::IP->new(
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PeerAddrInfo => \@peeraddrinfo,
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Blocking => 0,
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) or die "Cannot construct socket - $IO::Socket::errstr";
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$poll->mask( $socket => POLLOUT );
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while(1) {
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$poll->poll( undef );
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if( $poll->events( $socket ) & POLLOUT ) {
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last if $socket->connect;
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die "Cannot connect - $!" unless $! == EINPROGRESS;
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}
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}
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printf STDERR "Connected to %s:%s\n", $socket->peerhost_service;
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$poll->mask( \*STDIN => POLLIN );
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$poll->mask( $socket => POLLIN );
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while(1) {
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$poll->poll( undef );
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if( $poll->events( \*STDIN ) ) {
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my $ret = STDIN->sysread( my $buffer, 8192 );
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defined $ret or die "Cannot read STDIN - $!\n";
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$ret or last;
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$socket->syswrite( $buffer );
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}
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if( $poll->events( $socket ) ) {
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my $ret = $socket->sysread( my $buffer, 8192 );
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defined $ret or die "Cannot read socket - $!\n";
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$ret or last;
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STDOUT->syswrite( $buffer );
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}
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}
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