[lwip-devel] [bug #64558] pending IGMP response is cleared when there is a query message

[Niklas Molin]

Follow-up Comment #1, bug #64558 (project lwip):


[comment #0 original submission:]
> If I have a pending IGMP response and we receive a query message, it will
start over the timer for the response.
> If the router sends burst of query messages, it would be that there won't be
a response sent until there is timed out.
> 
> In RFC2236 section 3, it says:
> If a timer for the group is already running, it is reset to the random value
only if the requested Max Response Time is less than the remaining value of
the running timer
> 
> So there needs to be a check if the new MAX Response Time is less than the
remaining time, if so, we need to update the timer, otherwise we should
continue to use the current timer value.


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