I'm not able to get a record browser doing what I want. I have modified
client-browse-services.c to make a record browser instead of a service browser.
avahi_record_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
"BRN30055C232008.local", AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_A, 0,
browse_callback, client)
I know my printer BRN30055C232008.local is making DNS A announcements because I
can see them in Wireshark. However I just get CACHE_EXHAUSTED then seg fault.
I've tried different host names with and without the domain and sometimes that
will get CACHE_EXHAUSTED, ALL_FOR_NOW instead of seg fault. I've also tried the
hostnames with and without the domain of various Apple devices I know are
making DNS A announcements.
I know that my printer is also making _http._tcp service announcements as
"Brother DCP-8011DN". If I pass "Brother DCP-8011DN" as the host name then I
get:CACHE_EXHAUSTEDDNS failure: NXDOMAIN
That's the closest I get to an outcome. It's worrying because I don't only want
to get the DNS A records of hosts that also advertise services, I just want to
grab (preferably all) DNS A records that the daemon has in memory.
Regards,
Jonathan
On Tuesday, 25 November 2014, 16:38, Michael Jones <av...@jonesmz.com>
wrote:
In the avahi-client C-API there is the concept of a Service Browser and a
Record Browser. Service Browser sounds like what you are using now:
| AvahiServiceBrowser* avahi_service_browser_new | ( | AvahiClient * | client,
|
| | | AvahiIfIndex | interface, |
| | | AvahiProtocol | protocol, |
| | | const char * | type, |
| | | const char * | domain, |
| | | AvahiLookupFlags | flags, |
| | | AvahiServiceBrowserCallback | callback, |
| | | void * | userdata |
| | ) |
The type being for example _http._tcp. Whereas a Record Browser looks like this:
| AvahiRecordBrowser* avahi_record_browser_new | ( | AvahiClient * | client, |
| | | AvahiIfIndex | interface, |
| | | AvahiProtocol | protocol, |
| | | const char * | name, |
| | | uint16_t | clazz, |
| | | uint16_t | type, |
| | | AvahiLookupFlags | flags, |
| | | AvahiRecordBrowserCallback | callback, |
| | | void * | userdata |
| | ) |
Hi Jonathan,
Yea, that looks familiar. As far as I remember, the qtzeroconf (either the
original, or my fork) doesn't use the avahi_record_browser api.
I'd be happy to collaborate with you on building support for that.
Should be pretty straight forward. Mostly we'll just need to copy and
modify the ServiceBrowser class, I think.
--Mike
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