[LEDE-DEV] umdns: query response only every 60s

[Cristian Morales Vega]

On 26 September 2017 at 15:41, Philipp Meier <philipp.meier at neratec.com> wrote:
> Hi
>
> When using umdns I experience the follow not expected behavior:
>
> There is no mDNS response sent for a service where an announcement or a
> response has been sent in the last 60 seconds (see service.c function
> service_timeout).
>
> 1. I started the LEDE device
> 2. Then I started a PC application
> 3. In the PC app I sent out an mDNS query
> 4. I wondered why I did not get a response
>
> Then by looking at the source code I detected the service_timeout function
> in service.c and now see that when I wait long enough with above step 3,
> then I get the expected response from LEDE.
>
> In the mDSN RFC I cannot directly see any such requirement. But I might
> interpret it wrong.
>
> Why is LEDE umdns only answering queries for a certain service every 60s?

FWIW I have had the same problem ->
http://lists.infradead.org/pipermail/lede-dev/2017-April/007188.html

John did mention that the RFC says it's required, but I have never
been able to find that reference.