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 : [EMAIL PROTECTED] Web Site : http://www.hymatom.fr ==================================== P Avant d'imprimer, penser à l'environnement -----Message d'origine----- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 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.
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