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.\"
.IX Title "Zonemaster::Recursor 3pm"
.TH Zonemaster::Recursor 3pm "2021-01-06" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Zonemaster::Recursor \- recursive resolver for Zonemaster
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    my $packet = Zonemaster::Recursor\->recurse($name, $type, $class);
\&    my $pname = Zonemaster::Recursor\->parent(\*(Aqexample.org\*(Aq);
.Ve
.SH "METHODS"
.IX Header "METHODS"
.ie n .IP "recurse($name, $type, $class)" 4
.el .IP "recurse($name, \f(CW$type\fR, \f(CW$class\fR)" 4
.IX Item "recurse($name, $type, $class)"
Does a recursive resolution from the root servers down for the given triplet.
.IP "parent($name)" 4
.IX Item "parent($name)"
Does a recursive resolution from the root down for the given name (using type \f(CW\*(C`SOA\*(C'\fR and class \f(CW\*(C`IN\*(C'\fR). If the resolution is successful, it returns
the domain name of the second-to-last step. If the resolution is unsuccessful, it returns the domain name of the last step.
.ie n .IP "get_ns_from($packet, $state)" 4
.el .IP "get_ns_from($packet, \f(CW$state\fR)" 4
.IX Item "get_ns_from($packet, $state)"
Internal method. Takes a packet and a recursion state and returns a list of ns objects. Used to follow redirections.
.ie n .IP "get_addresses_for($name[, $state])" 4
.el .IP "get_addresses_for($name[, \f(CW$state\fR])" 4
.IX Item "get_addresses_for($name[, $state])"
Takes a name and returns a (possibly empty) list of \s-1IP\s0 addresses for
that name (in the form of Zonemaster::Net::IP objects). When used
internally by the recursor it's passed a recursion state as its second
argument.
.IP "\fBclear_cache()\fR" 4
.IX Item "clear_cache()"
Class method to empty the cache of responses to recursive queries.
.IP "\fBroot_servers()\fR" 4
.IX Item "root_servers()"
Returns a list of ns objects representing the root servers. The list of root servers is hardcoded into this module.