Error: bind EADDRINUSE

[drasko]

Trying the example on my Debian built Node v0.12.0:

drasko@Lenin:~/nw/test$ DEBUG=mdns:* node test.js 
  mdns:lib:networking interface +0ms wlan0 192.168.0.46
  mdns:lib:networking creating socket for +4ms wlan0
  mdns:lib:networking creating socket for +3ms pseudo multicast
  mdns:lib:networking bindToAddress +4ms wlan0
events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: bind EADDRINUSE
    at exports._errnoException (util.js:746:11)
    at dgram.js:224:28
    at dns.js:85:18
    at process._tickCallback (node.js:355:11)
    at Function.Module.runMain (module.js:503:11)
    at startup (node.js:129:16)
    at node.js:814:3
drasko@Lenin:~/nw/test$ 

[kmpm]

Do you get this if you first stop the avahi daemon?

node v0.10 with avahi running, tests and examples/service.js works
node v0.12 with avahi running, tests and examples/service.js fails with EADDRINUSE
node v0.12 without avahi running, tests and examples/service.js works

More investigation needed

[kmpm]

Ok.. as I suspected.
If I don't open the pseudo multicast "0.0.0.0:5353" it will work even with avahi running but we shouldn't do that. I don't know why v0.10 didn't fail. It should have.
Two competing mdns services is NOT a good thing. So using this to advertise services at the same time as avahi or bonjour is running will fail in one level or another.
This is probably a invalid issue but I would appreciate feedback on if it works without avahi running.

[kmpm]

If you want to use the discovery part on a system with avahi or bonjour I have added a way of excluding the offending interface.

mdns.excludeInterface('0.0.0.0');

before ANY other activity.

[drasko]

I did not really try examples/service.js, but examples/simple.js. I don't need to export service, I need just to browse existing services around me.

And yes, it does not work even with avahi stopped.

How to install version with your fix? I tried:

npm install https://github.com/kmpm/node-mdns-js.git

but this does not work...

I don't understand - why do I have to stop avahi just to browse the existing services? Can examples/simple.js work without stopping avahi?

[drasko]

Ah, replacing

npm install https://github.com/kmpm/node-mdns-js.git

by

npm install git://github.com/kmpm/node-mdns-js.git

works.

And now test program works even with avahi running.

[drasko]

How to retrieve fullname and host?

I need to recognize the service by the name, like "myService.local". For now I am getting in name just 'http', 'smb', or 'ssh' for example:

data: { addresses: [ '192.168.0.26' ],
  query: [ '_services._dns-sd._udp.local' ],
  type: 
   [ { name: 'ssh',
       protocol: 'tcp',
       subtypes: [],
       description: 'SSH Remote Terminal' },
     { name: 'smb',
       protocol: 'tcp',
       subtypes: [],
       description: 'Microsoft Windows Network' },
     { name: 'http',
       protocol: 'tcp',
       subtypes: [],
       description: 'Web Site' } ],
  interfaceIndex: 0,
  networkInterface: 'wlan0' }

[jnath]

I found maybe something.
On node, it's work perfectly, but on io.js my app crash with "Error: bind EADDRINUSE 0.0.0.0:5353".

the last build alpha1/2/3 of nw.js build with io.js. and mdns-js seems not compatible with io.js.

[jnath]

maybe help

nodejs/node#554

use reuseAddr: true
var s = dgram.createSocket({ type: 'udp4', reuseAddr: true })

[xat]

yes, reuseAddr: true seems to fix the issue.

[auchenberg]

Can you push a new version to NPM? Thanks!