[lwip-users] Re: Join Multicast Group

[Jakob Stoklund Olesen]

Kieran Mansley <address@hidden> writes:

> On Tue, 2009-07-14 at 14:41 +0200, Mathias Zenger wrote:
>> Since it is possible to enable LWIP_IGMP I thought
>> this feature would be supported by lwIP. Does anybody have an explanation
>> for the failures or can somebody even provide me a working example?
>
> lwIP should, I think, support IGMP multicast for UDP sockets.  I haven't
> done this myself, so can't help directly with a working example, but I
> would first try it without binding multiple sockets to the same address.
> I.e. get rid of the SO_REUSEADDR stuff, in case that is causing a
> problem.

I am using UDP multicast from the raw API. It works very well. IGMP
packets are sent after calling igmp_joingroup().

/jakob