Re: [lwip-users] memp_malloc: out of memory in pool TCP_PCB

[address@hidden]

Am 24.10.2019 um 18:57 schrieb Mário Luzeiro:
> Hello all,
>
> I'm running a HTTPD over ALTPCB / MBEDTLS
>
> It all works ok until I start to make lots os http requests (eg open multiple 
> pages)
> No matter how much I increase MEMP_NUM_TCP_PCB, after a while, I will get this 
> error:
> memp_malloc: out of memory in pool TCP_PCB
>
> I notice that httpd is closing the connection, also I got
> tcp_slowtmr: no active pcbs
>
> but if I debug TCP_PCB they will keep the value high and event if I close all 
> webpages in the browser, I will get the errors when I get back to open a new 
> webpage request.
>
> Is that error a normal behavior or how can I fix it?

No, that's not normal behaviour. It seems like old connections aren't
properly closed and then no new connections can be opened.

Regards,
Simon