# NAME DNS::Unbound - A Perl interface to NLNetLabs’s [Unbound](https://nlnetlabs.nl/projects/unbound/) recursive DNS resolver # SYNOPSIS my $dns = DNS::Unbound->new()->set_option( verbosity => 2 ); my $verbosity = $dns->get_option( 'verbosity' ); $dns->set_option( verbosity => 1 + $verbosity ); my $res_hr = $dns->resolve( 'cpan.org', 'NS' ); # See below about encodings in “data”. my @ns = map { $dns->decode_name($_) } @{ $res_hr->{'data'} }; # METHODS ## _CLASS_->new() Instantiates this class. ## $result\_hr = _OBJ_->resolve( $NAME, $TYPE \[, $CLASS \] ) Runs a synchronous query for a given $NAME and $TYPE. $TYPE may be expressed numerically or, for convenience, as a string. $CLASS is optional and defaults to 1 (`IN`), which is probably what you want. Returns a reference to a hash that corresponds to a libunbound `struct ub_result` (cf. [libunbound(3)](https://nlnetlabs.nl/documentation/unbound/libunbound/)), excluding `len`, `answer_packet`, and `answer_len`. **NOTE:** Members of `data` are in their DNS-native RDATA encodings. (libunbound doesn’t track which record type uses which encoding, so neither does DNS::Unbound.) To decode some common record types, see ["CONVENIENCE FUNCTIONS"](#convenience-functions) below. ## _OBJ_->set\_option( $NAME => $VALUE ) Sets a configuration option. Returns _OBJ_. ## $value = _OBJ_->get\_option( $NAME ) Gets a configuration option’s value. ## _CLASS_->unbound\_version() Gives the libunbound version string. # CONVENIENCE FUNCTIONS Note that [Socket](https://metacpan.org/pod/Socket) provides the `inet_ntoa()` and `inet_ntop()` functions for decoding `A` and `AAAA` records. The following may be called either as object methods or as static functions (but not as class methods): ## $decoded = decode\_name($encoded) Decodes a DNS name. Useful for, e.g., `NS` query results. Note that this will normally include a trailing `.` because of the trailing NUL byte in an encoded DNS name. ## $strings\_ar = decode\_character\_strings($encoded) Decodes a list of character-strings into component strings, returned as an array reference. Useful for `TXT` query results. # REPOSITORY [https://github.com/FGasper/p5-DNS-Unbound](https://github.com/FGasper/p5-DNS-Unbound) 1;