1use strict;
2
3BEGIN {
4  if ($ENV{PERL_CORE}) {
5    unless ($ENV{PERL_TEST_Net_Ping}) {
6      print "1..0 # Skip: network dependent test\n";
7        exit;
8    }
9  }
10  unless (eval "require Socket") {
11    print "1..0 \# Skip: no Socket\n";
12    exit;
13  }
14  unless (getservbyname('echo', 'tcp')) {
15    print "1..0 \# Skip: no echo port\n";
16    exit;
17  }
18  unless (getservbyname('http', 'tcp')) {
19    print "1..0 \# Skip: no http port\n";
20    exit;
21  }
22}
23
24# Remote network test using syn protocol.
25#
26# NOTE:
27#   Network connectivity will be required for all tests to pass.
28#   Firewalls may also cause some tests to fail, so test it
29#   on a clear network.  If you know you do not have a direct
30#   connection to remote networks, but you still want the tests
31#   to pass, use the following:
32#
33# $ PERL_CORE=1 make test
34
35# Try a few remote servers
36my %webs;
37BEGIN {
38  %webs = (
39  # Hopefully this is never a routeable host
40  "172.29.249.249" => 0,
41
42  # Hopefully all these web ports are open
43  "www.geocities.com." => 1,
44  "www.freeservers.com." => 1,
45  "yahoo.com." => 1,
46  "www.yahoo.com." => 1,
47  "www.about.com." => 1,
48  "www.microsoft.com." => 1,
49  "127.0.0.1" => 1,
50);
51}
52
53use Test::More tests => 3 + 2 * keys %webs;
54
55BEGIN {use_ok('Net::Ping')};
56
57my $can_alarm = eval {alarm 0; 1;};
58
59sub Alarm {
60  alarm(shift) if $can_alarm;
61}
62
63Alarm(50);
64$SIG{ALRM} = sub {
65  fail('Alarm timed out');
66  die "TIMED OUT!";
67};
68
69my $p = new Net::Ping "syn", 10;
70
71isa_ok($p, 'Net::Ping', 'new() worked');
72
73# Change to use the more common web port.
74# (Make sure getservbyname works in scalar context.)
75cmp_ok(($p->{port_num} = getservbyname("http", "tcp")), '>', 0, 'valid port');
76
77foreach my $host (keys %webs) {
78  # ping() does dns resolution and
79  # only sends the SYN at this point
80  Alarm(50); # (Plenty for a DNS lookup)
81  is($p->ping($host), 1, "Can reach $host $p->{bad}->{$host}");
82}
83
84Alarm(20);
85while (my $host = $p->ack()) {
86  is($webs{$host}, 1, "supposed to be up: http://$host/");
87  delete $webs{$host};
88}
89
90Alarm(0);
91foreach my $host (keys %webs) {
92  is($webs{$host}, 0, "supposed to be down: http://$host/ [" . ($p->{bad}->{$host} || "") . "]");
93}
94