Re: [lwip-users] mDNS Service Search Not Working

[Manu Abraham]

I have the 2.1.2 release. There is no such function in there.
Maybe you are looking at the development tree ?
I see it in the git tree. Haven't tried it yet.

On Wed, Sep 9, 2020 at 10:53 PM Niall Begley <nbegley@gmail.com> wrote:
>
> Yes, I agree that it appears the mDNS functionality as-is only works as 
> outgoing only.
>
> After turning on debug logging on both the ip4 and ethernet layers, I believe 
> I determined that while incoming mDNS broadcasts are out there and being sent 
> (confirmed by wireshark), I'm not seeing any of them come in at all on the 
> ethernet layer. I'm pretty new to this but maybe I've missed something that 
> needs to be done while setting up my netif? I'm seeing other broadcast 
> messages sent to my 192.168.1.255 / ff:ff:ff:ff:ff:ff just fine but none of 
> the mDNS ones.
>
> I have to imagine there is a way to make this work because I can't imagine 
> someone went to the effort to write the service search code if they didn't 
> have a way to get responses back to the search queries being sent out.
>
> On Wed, Sep 9, 2020 at 11:46 AM Manu Abraham <abraham.manu@gmail.com> wrote:
>>
>> Hi,
>>
>> I had the same question, in a different way. It appears to me that
>> mDNS is advertise only.
>> Was having similar thoughts what you outlined, since no one replied.
>>
>> http://lwip.100.n7.nabble.com/dhcp-and-mdns-responder-tt35983.html#a35984
>>
>> Thoughts of an anechoic chamber, pass by ..
>>
>>
>> Best Regards,
>>
>> Manu
>>
>>
>> On Wed, Sep 9, 2020 at 8:09 PM Niall Begley <nbegley@gmail.com> wrote:
>> >
>> > Hi everyone,
>> >
>> > I'm new to both lwip and mdns and I'm trying to use mdns_search_service() 
>> > to search for a service on my network (any service, really, I just want to 
>> > see it work) but I'm having trouble.  The callback I provide is never 
>> > being called even though from what I can tell from wireshark the mDNS 
>> > query is making it out there and is being responded to.
>> >
>> > I saw that someone else had this exact same issue 
>> > (http://lwip.100.n7.nabble.com/mDNS-question-td34016.html) but it doesn't 
>> > look like there were any follow ups.
>> >
>> > I don't see any documentation for either mdns_search_service or 
>> > mdns_search_stop outside of comments in the code, so I don't know if these 
>> > are really used by anyone?  Does anyone have experience with this that 
>> > could help me out?
>> > _______________________________________________
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>>
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