Re: [lwip-users] Problem with NULL pcb->callback_arg

[Simon Goldschmidt]

Baptiste Chaboud-crousaz wrote:
> Can you explain me what is the purpose of this function?

The poll function is used for timeout handling. For example, the http  
server closes connections that are idle for too long (poll is called  
twice without data sent or received in between).


Regarding your initial problem, I know it's not correct that arg is  
NULL in http_sent (and I'm afraid I don't know why - doesn't happen  
here with the httpd in contrib), but why do you get a "hardfault  
exception" (whatever that is)? The code you sent last time seemed to  
check for a NULL-pointer correctly...

Simon