Raspberry PI mdns getaddrinfo 3008 error

Question

I've this sample Node.js script:

var mdns = require('mdns');

var browser = mdns.createBrowser(mdns.tcp('http'));
browser.on('error', function (error) {
    console.log("error");
    console.log(error);
});
browser.on('serviceUp', function (service) {
    console.log("serviceUp");
    console.log(service);
});
browser.start();

On my Mac it's working fine, and two services is found. If I run the exact same script on my Raspberry PI 2 running Raspbean (connected to the same network), I get this output:

pi@raspberrypi ~ $ node mdns.js 
*** WARNING *** The program 'node' uses the Apple Bonjour compatibility layer of Avahi.
*** WARNING *** Please fix your application to use the native API of Avahi!
*** WARNING *** For more information see <http://0pointer.de/avahi-compat?s=libdns_sd&e=node>
*** WARNING *** The program 'node' called 'DNSServiceRegister()' which is not supported (or only supported partially) in the Apple Bonjour compatibility layer of Avahi.
*** WARNING *** Please fix your application to use the native API of Avahi!
*** WARNING *** For more information see <http://0pointer.de/avahi-compat?s=libdns_sd&e=node&f=DNSServiceRegister>
error
{ [Error: getaddrinfo -3008] code: -3008, errno: -3008, syscall: 'getaddrinfo' }
error
{ [Error: getaddrinfo -3008] code: -3008, errno: -3008, syscall: 'getaddrinfo' }

A issue on the mdns GitHub, states that it's fair to ignore the warnings.

But what about the two errors? Is that some kind of configuration issue on my Raspberry PI?

Answer 1

A solution was found on this GitHub issue: https://github.com/agnat/node_mdns/issues/130

Modify Browser.defaultResolverSequence inside lib/browser.js in mdns.

Browser.defaultResolverSequence = [
  rst.DNSServiceResolve(), 'DNSServiceGetAddrInfo' in dns_sd ? rst.DNSServiceGetAddrInfo() : rst.getaddrinfo({families:[4]})
, rst.makeAddressesUnique()
];

Answer 2

It's a bad practice to modify node modules code locally.

You should better do the following when you create a mdns Browser:

var sequence = [
  mdns.rst.DNSServiceResolve(),
  'DNSServiceGetAddrInfo' in mdns.dns_sd ? mdns.rst.DNSServiceGetAddrInfo() : mdns.rst.getaddrinfo({families:[4]}),
  mdns.rst.makeAddressesUnique()
];
var browser = mdns.createBrowser(mdns.tcp('http'), {resolverSequence: sequence});

Like said in this comment: https://github.com/agnat/node_mdns/issues/130#issuecomment-120731155

Thus, it will avoid bugs and allow everybody working on the project to get the same version and don't have to modify locally mdns code.