Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

LWIP standalong server bug?

Hi, Examining the example lwip_server, in particular httpd.c. When tcp_close is called the pcb is deallocated, so surely a tcp_new,bind must be performed again? in the LWIP source tcp...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

I'm also trying to use the standalone LwIP Raw API in a more extensive application than the http-server example.

I share the complaint that you made : the 'rawapi.txt ' documentation is far from complete.

But to be maybe of a little help to you : the thesis written by Adam Dunkels (the original designer of LwIP) is available on the internet. in Chapter 4 it discusses in general how the TCP/IP stack works and you can find some more details about memory management and the use of the pbufs.

You can find the thesis at

http://www.sics.se/~adam/thesis.pdf (http://www.sics.se/~adam/thesis.pdf)

I hope this answers some questions...