RE : [lwip-users] Multi-cast UDP messages?

[Frédéric BERNON]

Hi,

I know that even before 1.1.0, we could send UDP on multicast address (when I 
start with lwIP, that was one of first tests I did). From memory, nothing was 
necessary to patch. Recv multicast was a little bit difficult (because IGMP 
wasn't available), but if you get last CVS release, IGMP is now supported.

Can you add some traces after :

lwip_sendto(2, data=007A977E, size=22, flags=0x0 to=239.192.26.32 port=2222

Before netconn_connect, and before lwip_send, to see where the stack hang  ?

  
====================================
Frédéric BERNON 
HYMATOM SA 
Chef de projet informatique 
Microsoft Certified Professional 
Tél. : +33 (0)4-67-87-61-10 
Fax. : +33 (0)4-67-70-85-44 
Email : address@hidden 
Web Site : http://www.hymatom.fr 
====================================
P Avant d'imprimer, penser à l'environnement
 


-----Message d'origine-----
De : address@hidden [mailto:address@hidden De la part de Robert Morse
Envoyé : vendredi 11 mai 2007 15:52
À : Mailing list for lwIP users
Objet : [lwip-users] Multi-cast UDP messages?


Hi,
        I am trying to get version 1.2 of the lwip stack going, and while I am 
having no problems with Webservers, an normal upd traffice.  But I have the 
need to send multi-cast UDP packets and running into the whole stack locking 
up, and causing a reboot.

        My question, is does the stack support sending out Multi-cast UDP 
packets.
I see comments in the code about receiving, and I would think sending 
would
be easier.

        I have attached a detailed log starting where the lwip gets the 
lwip_sendto
call.  I have every debug item turned on except a few dealing with ppp 
and slip.

        The strange part is after the lwip_sendto(...)
        I never see a tcpip_thread: API message
        then a udp_connect: connected message.

Frédéric BERNON.vcf
Description: Frédéric BERNON.vcf