135/netdisco
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

allow override of Net::DNS::Resolver timeout options

Browse Source
This commit is contained in:
Oliver Gorwits
2017-06-24 14:34:52 +01:00
parent 2cd4423a79
commit 1cdb6f7a63
1 changed files with 22 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
lib/App/Netdisco/Util/DNS.pm
View File

@@ -25,16 +25,31 @@ subroutines.
=head1 EXPORT_OK =head1 EXPORT_OK
=head2 hostname_from_ip( $ip ) =head2 hostname_from_ip( $ip, \%opts? )
Given an IP address (either IPv4 or IPv6), return the canonical hostname. Given an IP address (either IPv4 or IPv6), return the canonical hostname.
C<< %opts >> can override the various timeouts available in
L<Net::DNS::Resolver>:
=over 4
=item C<tcp_timeout>: 120 (seconds)
=item C<udp_timeout>: 30 (seconds)
=item C<retry>: 4 (attempts)
=item C<retrans>: 5 (timeout)
=back
Returns C<undef> if no PTR record exists for the IP. Returns C<undef> if no PTR record exists for the IP.
=cut =cut
sub hostname_from_ip { sub hostname_from_ip {
my $ip = shift; my ($ip, $opts) = @_;
return unless $ip; return unless $ip;
my $ETCHOSTS = setting('dns')->{'ETCHOSTS'}; my $ETCHOSTS = setting('dns')->{'ETCHOSTS'};
@@ -46,6 +61,10 @@ sub hostname_from_ip {
} }
my $res = Net::DNS::Resolver->new; my $res = Net::DNS::Resolver->new;
$res->tcp_timeout($opts->{tcp_timeout} || 120);
$res->udp_timeout($opts->{udp_timeout} || 30);
$res->retry($opts->{retry} || 4);
$res->retrans($opts->{retrans} || 5);
my $query = $res->search($ip); my $query = $res->search($ip);
if ($query) { if ($query) {