Hoa is a modular, extensible and structured set of PHP libraries. Moreover, Hoa aims at being a bridge between industrial and research worlds.

Hoa\Dns

This library allows to resolve domain name according to their types.

Quick usage

As a quick overview, we propose to create our own resolution server for the top level domain .hoa. We start by modifying the local resolver in order to add a new resolution host: ours.

Specify a resolution server

On Mac OS X, the simplest way is to write in /etc/resolver/hoa the following declarations:

nameserver 127.0.0.1
port 57005

On Linux, we will use DNSMasq (often already installed). Then, we edit the file /etc/dnsmasq.conf by adding:

server=/hoa/127.0.0.1#57005

And do not forget to restart:

$ sudo /etc/init.d/dnsmasq restart
 * Restarting DNS forwarder and DHCP server dnsmasq    [OK]

For Windows, it is more complicated. You should read the documentation.

Create a resolution server

Well, now, we will create our resolution server that will listen 127.0.0.1:57005 (57005 = 0xDEAD) in UDP. Thus, in the Resolution.php file:

$dns = new Hoa\Dns\Dns(
    new Hoa\Socket\Server('udp://127.0.0.1:57005')
);
$dns->on('query', function ( Hoa\Core\Event\Bucket $bucket ) {

    $data = $bucket->getData();
    echo 'Resolving domain ', $data['domain'],
         ' of type ', $data['type'], "\n";

    return '127.0.0.1';
});
$dns->run();

All query for the top level domain .hoa will be resolved to 127.0.0.1 (note: we do not look at the type, which should be A or AAAA respectively for IPv4 and IPv6).

Finally, let say we have a HTTP server that runs on 127.0.0.1:8888 and the index responds yeah \o/, then we start our resolver:

$ php Resolver.php

And we make a HTTP request on foo.hoa (that will be resolve to 127.0.0.1):

$ curl foo.hoa --verbose
* About to connect() to foo.hoa port 8888 (#0)
*   Trying 127.0.0.1... connected
* Connected to foo.hoa (127.0.0.1) port 8888 (#0)
> GET / HTTP/1.1
> User-Agent: curl/a.b.c (…) libcurl/d.e.f
> OpenSSL/g.h.i zlib/j.k.l
> Host: foo.hoa:8888
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: …
< Server: …
< Content-Type: text/html
< Content-Length: 8
<
yeah \o/
* Connection #0 to host foo.hoa left intact
* Closing connection #0

We see that foo.hoa is resolved to 127.0.0.1!

Documentation

Different documentations can be found on the website: http://hoa-project.net/.

License

Hoa is under the New BSD License (BSD-3-Clause). Please, see LICENSE.