Adding extra DNS records with CFNetService?
Adding extra DNS records with CFNetService?
- Subject: Adding extra DNS records with CFNetService?
- From: Jens Alfke <email@hidden>
- Date: Fri, 24 Apr 2009 07:57:11 -0700
| I have a Bonjour service I want to add an extra DNS record* (probably a NULL) to. There doesn't seem to be any API for this on CFNetService (or NSNetService), although there is at the DNSService level (in <dns_sd.h>).
Is there a way to get the underlying DNSServiceRef from a CFNetServiceRef? Or a way to use DNSService to affect an existing registration instead of creating a new one?
(I'm pretty sure the answers are "no", but I want to ask before I rewrite my code to use DNSService instead of NSNetService :-p )
—Jens
* Why: I want to add a digital signature to the TXT record, to allow for validating the identity of the service. But DNS records are really cramped (they shouldn't go over ~1500 bytes) and RSA keys and signatures are pretty big (~256 bytes), so I'm thinking of putting the constant part, the public key, in an auxiliary record like NULL. This is similar to the way iChat's Bonjour service moves the buddy-icon data into a NULL record. |
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