[lwip-users] Managing pbufs for sending UDP

[Rob Agar]

Hi all,

My embedded application sends UDP messages of varying lengths, depending 
on the contents.  I would appreciate advice on the recommended way to 
manage the pbuf's involved.

Right now I'm calling pbuf_alloc / pbuf_free every time a message needs 
sending using PBUF_RAM.  It appears to  work fine, but I'm worried it 
will lead to memory fragmentation nastiness after it's been running for 
a long time. Should I be worried?

Also, am I right in thinking that PBUF_POOL is for receiving messages 
*only* , not for sending?

cheers

Rob