Thanks for the explanation, yes it is for
a UPnP stack that I am playing with until I can get the “commercial stack”
we are going to use ported.
I have all the IGMP stuff working and the
stack working and the device running but the problem is with the XBOX360, it
seems to ignore my ssdp announcement! I have checked with other UPnP devices
and it seems that the XBOX needs you to initiate the link by waiting on its
ssdp announcement!
joolz
From:
address@hidden
[mailto:address@hidden On Behalf Of Frédéric BERNON
Sent: 01 September 2007 19:24
To: Mailing
list for lwIP users
Subject: Re: [lwip-users]
SO_REUSEADDR
First SO_REUSEADDR is not currently supported by CVS HEAD
(Christiian started something, but he has disable the code from memory).
"Broadcasting" to 239.255.225.250 is not the "best"
_expression_, it's more "multicasting". But, to send to
239.255.255.250:1900 (uPNP I suppose), you don't have to bind to
239.255.255.250:1900, but to any:any. To hear the other devices, you should use
a second socket for that, binded to any:1900. Is it the case? If yes, SO_REUSEADDR
is not necessary to your project. But in all cases, to process incoming
multicast packets, you should use IGMP to inform you network (switchs,
routers...) to route to your target all packets "to 239.255.255.250".
But once these packets reach your target, if LWIP_IGMP=0, I don't know if
multicast packets are really processed.
There is a task open to include a support of SO_REUSEADDR
option, but not yet started...
----- Original Message -----
Sent: Saturday,
September 01, 2007 8:10 PM
Subject: [lwip-users]
SO_REUSEADDR
Just put in the new cvs code and after removing some
useless code I started trying to find out why some of my code is not being
called.
This is the problem, I am broadcasting on
239.255.255.250:1900 and that’s ok but I also need to listen to the same
address and port so I can hear the other devices announcing that they are
available, I get the raw packets but its lost on its way up the chain?
Is this a known problem? Is there any way around it?
Joolz
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