It was my understanding that though it is described in the dns-sd
spec/draft, mDNSResponder doesn't support subtypes...Using an example
specified in the draft, you would be able to run a service with type
of "_anon._ftp._tcp", but you'll get errors from mDNSResponder.
mDNSResponder *does* support subtypes and has supported them since
Mac OS X 10.3.9.
You can register a list of subtypes by passing in a service type like...
_foobar._tcp,_subtype1,_subtype2,_subtype3
and you can browse for a subtype by using...
_foobar._tcp,_subtype1
On 3/6/07, Garikipati, Chendra <email@hidden> wrote:
I think this question is for somebody at Apple.
I have compiled the mDNSResponder-107.6 to use under VxWorks 5.4.
Every
thing I have tested so far works fine except when I try to publish
a service
with a subtype. The service is of the form
"_<name>._tcp,_<subtype>". I also
tried without the underscore before the subtype. When I looked at
the source
code for DNSServiceRegister() in file dnssd-clientshim.c, I
noticed the
following assignment " AuthRecord *SubTypes = mDNSNULL; mDNSu32
NumSubTypes
= 0; " and that never changed before calling 'mDNS_RegisterService
()'. It
appers like one can never register subtypes?. On Windows however
using
dssd.dll, I could register subtypes. I am perhaps missing some
thing here.
Can somebody please clarify this.
The dnssd-clientshim.c is only used by clients that embed the
mDNSCore code into their application, and it's known to implement
most but not all of the DNSService APIs. You should be able to fix
this by taking the code from uds_daemon.c/dnssd-clientstub.c and
moving it over to dnssd-clientshim.c. Please feel free to submit a
patch if you get this working.
Thanks.
-Marc
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