[lwip-users] Re: [lwip] dropping the TIME-WAIT state

[psheer]

thanks for this explanation, Adam

the problem is that lwIP can serve 30 web pages per second on
my board, although my web server only has a heap of about 128kB.
This means 3600 TIME-WAIT pcbs in two minutes - which easily
consumes all my memory. My web server already drops connections
when memory is low - so it merely translates to a performance
knock.

I think a better behaviour is for lwIP to reallocate to a
minimal struct after the pcb enters TIME-WAIT *shrug*

In the mean time I am just going to,

    /* Check if this PCB has stayed long enough in TIME-WAIT */
    if((u32_t)(tcp_ticks - pcb->tmr) > 10000 / TCP_SLOW_INTERVAL) {
      ++pcb_remove;
    }

and be done with

best

-paul



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