io_udp.t

source of perl for linux application,

#!./perl

BEGIN {
    unless(grep /blib/, @INC) {
	chdir 't' if -d 't';
	@INC = '../lib';
    }
}

use Config;

BEGIN {
    my $reason;

    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bSocket\b/) {
      $reason = 'Socket was not built';
    }
    elsif ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bIO\b/) {
      $reason = 'IO was not built';
    }
    elsif ($^O eq 'apollo') {
      $reason = "unknown *FIXME*";
    }
    undef $reason if $^O eq 'VMS' and $Config{d_socket};
    if ($reason) {
	print "1..0 # Skip: $reason\n";
	exit 0;
    }
}

sub compare_addr {
    no utf8;
    my $a = shift;
    my $b = shift;
    if (length($a) != length $b) {
	my $min = (length($a) < length $b) ? length($a) : length $b;
	if ($min and substr($a, 0, $min) eq substr($b, 0, $min)) {
	    printf "# Apparently: %d bytes junk at the end of %s\n# %s\n",
		abs(length($a) - length ($b)),
		$_[length($a) < length ($b) ? 1 : 0],
		"consider decreasing bufsize of recfrom.";
	    substr($a, $min) = "";
	    substr($b, $min) = "";
	}
	return 0;
    }
    my @a = unpack_sockaddr_in($a);
    my @b = unpack_sockaddr_in($b);
    "$a[0]$a[1]" eq "$b[0]$b[1]";
}

$| = 1;
print "1..7\n";

use Socket;
use IO::Socket qw(AF_INET SOCK_DGRAM INADDR_ANY);

$udpa = IO::Socket::INET->new(Proto => 'udp', LocalAddr => 'localhost')
     || IO::Socket::INET->new(Proto => 'udp', LocalAddr => '127.0.0.1')
    or die "$! (maybe your system does not have a localhost at all, 'localhost' or 127.0.0.1)";

print "ok 1\n";

$udpb = IO::Socket::INET->new(Proto => 'udp', LocalAddr => 'localhost')
     || IO::Socket::INET->new(Proto => 'udp', LocalAddr => '127.0.0.1')
    or die "$! (maybe your system does not have a localhost at all, 'localhost' or 127.0.0.1)";

print "ok 2\n";

$udpa->send("ok 4\n",0,$udpb->sockname);

print "not "
  unless compare_addr($udpa->peername,$udpb->sockname, 'peername', 'sockname');
print "ok 3\n";

my $where = $udpb->recv($buf="",5);
print $buf;

my @xtra = ();

unless(compare_addr($where,$udpa->sockname, 'recv name', 'sockname')) {
    print "not ";
    @xtra = (0,$udpa->sockname);
}
print "ok 5\n";

$udpb->send("ok 6\n",@xtra);
$udpa->recv($buf="",5);
print $buf;

print "not " if $udpa->connected;
print "ok 7\n";