v0.9.12 datagram .addMembership broken

[Hilko-Lantinga]

var server = dgram.createSocket("udp4");
server.bind(3000);
server.addMembership('224.0.0.14');

dgram.js:368
throw new errnoException(process._errno, 'addMembership');
^
Error: addMembership EBADF
at new errnoException (dgram.js:426:11)
at Socket.addMembership (dgram.js:368:11)

System Version: OS X 10.8.3 (12D76)

This worked on 0.6.x and 0.8.x and the docs show no difference.

[bnoordhuis]

That's because of 332fea5. dgram.Socket#bind() is always asynchronous now. It works if you rewrite your example like this:

var dgram = require('dgram');
var server = dgram.createSocket('udp4');
server.bind(3000, function() {
  server.addMembership('224.0.0.14');
});

I'll add a note to the docs and the wiki.

[Hilko-Lantinga]

Thanks for the quick response! (En voor al het werk aan node tot zo ver!)

Is there anything else that has changed on UDP? I'm no longer getting the error so soon, but after a while I get ENOENT. If I move all the listeners to the bind's anonymous function I get ENOTFOUND.

I'm pretty sure some of the changes to node require me to modify my code, but I can't find what changed and how to alter my code.

[bnoordhuis]

ENOENT and ENOTFOUND suggest that a DNS lookup fails. That's more a transient / environmental issue than it is a node.js issue. But if it's persistent across networks and machines, post a test case and I'll look into it.

[Hilko-Lantinga]

It took me ages, but I found the problem. It does not work without [interface]:
var dgram = require('dgram');
var server = dgram.createSocket('udp4');
server.bind(3000, function() {
server.addMembership('224.0.0.14');
});

But does work when it's set:
var dgram = require('dgram');
var server = dgram.createSocket('udp4');
server.bind(3000, '0.0.0.0', function() {
server.addMembership('224.0.0.14');
});

I've finally moved to 0.10.x

Please update the docs or make [interface] optional again (atleast on OS X).

[bnoordhuis]

Fixed in 92023b4.