>Isnt it a socket api function? netbuf_copy_partial is more a netconn api,than a socket one (but in current code, socket layer is based on netconn layer). But it's just to show you how to process a pbuf (where data can be in several blocks). So, don't use it directly, but look how it's implemented to do the same thing. >I am only taking the data of the first current pbuf received Be carefull, the "first current pbuf received" can be a chain: by example, if your port use a 128bytes pool size, and you receive a full packet (saying, 1500 bytes), the pbuf you will receive will be a pbuf chain of 12 "blocks" (~1500/128). More, if you only want to read the first pbuf of the chain, don't use "tot_len" (the total pbuf chain size), but "len" (the pbuf node size). > more longer than 10 chars so I guess it shouldn't cause the software to crash But with any "string" function (like sprintf), you HAVE TO alloc one byte more for the zero-terminal... >regarding sprintf, is memcpy better? Of course!!! ==================================== 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 <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 Louis
Filasky
Envoyé : mardi 10 juillet 2007 21:16
À : [email protected]
Objet : RE : [lwip-users] Weird behavior of lwIP with C functions
Hi Frederic,
Thank you for your quick reply,
Well, I was wondering about the netbuf_copy_partial function you talked
to me about. Isnt it a socket api function? I am using the raw api and well, I
can see what you mean when you say that there is a chain of pbuf when data is
received and I am only taking the data of the first current pbuf received. You
re right saying it could be handled better, still the command line I am sending
to Virtex II are no more longer than 10 chars so I guess it shouldn't cause the
software to crash. Besides I debugged the code by removing some
parts and see how the server behaves. No problem appears to come before
i check the commandType variable with a strncpy, then in this if, it starts
behaving weirdly.
Anyway, regarding sprintf, is memcpy better?
Thanks again,
Antoine.
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