Re: [lwip-users] Telnet - Raw API

[Sergio R. Caprile]

All you need is in the other apps, and the RFCs (for the telnet protocol...)

Once you get a pbuf, you basically get the data by reading each pbuf in 
the chain, though there is a function to do that.

The easy way:
        pbuf_copy_partial(p, buffer, p->tot_len, 0);

The hard, instructional way:
        struct pbuf *q = p;
        int offset=0;
        while(q){
                memcpy(&buffer[offset],p->payload,p->len);
                offset += p->len;
                q = q->next;
        }

Both "ways" put your data into your buffer, so you can do with that 
whatever you please.

If you check the webserver, it even teaches you how to work with it 
piece by piece.