Comments on: iPhone Tip: No NSHost

By: Greg

Greg — Wed, 31 Aug 2011 11:59:39 +0000

Thanks bdunagan. I was bouncing around the CF and NS libraries trying to find exactly this and it was giving me a headache. This is very concise and to the point. Thank you!

-G

By: bdunagan

bdunagan — Thu, 12 May 2011 08:57:30 +0000

@Chris Very nice! Not sure why you get duplicate IPs. Sorry.

By: Chris

Chris — Sun, 08 May 2011 02:19:11 +0000

welcome, in fact I also changed addressesForHostname() so that it returns an array of IPv6 and IPv4 addresses, but I still need to improve it.
http://wiki.gonzofamily.com/a/DNS_resolution_with_IPv6_in_Objective_C

Would you know why I have each IP 2 times? I had to add a test to make sur I add them only one time to the Array

By: bdunagan

bdunagan — Fri, 06 May 2011 11:51:25 +0000

@Chris Excellent! Thanks for the link.

By: Chris

Chris — Fri, 06 May 2011 06:30:33 +0000

Hi,

I modified the code to retrieve the IP Address, now it can retrieve IPv6 as well.
Hope it helps : http://wiki.gonzofamily.com/a/Retrieve_local_IPv4/IPv6_on_Wifi/Cellular

By: bdunagan

bdunagan — Thu, 24 Feb 2011 12:02:51 +0000

@Mikywan Hmm, strange. The first thing I’d try is replacing NULL with a CFStreamError object to see what error it returns. The error should shed some light on the problem.

By: Mikywan

Mikywan — Wed, 23 Feb 2011 14:30:53 +0000

First of all, thanks for this sample.

I couldn’t make hostnamesForAddress work, when It gets to

BOOL isSuccess = CFHostStartInfoResolution(hostRef, kCFHostNames, NULL);

isSuccess is always false.

Any ideas?

By: bdunagan

bdunagan — Wed, 18 Aug 2010 02:27:27 +0000

@David Great idea! I added a hostnameWithAddress method.

By: David

David — Wed, 11 Aug 2010 22:36:03 +0000

Brilliant tutorial, is there an option to do this for the alternative hostWithAddress? That’d be fantastic.

By: bdunagan

bdunagan — Tue, 18 May 2010 05:42:07 +0000

@Christian Winter Sorry, no idea how to get the CNAME for a domain.