Re: RE: Re: [lwip-users] Struggling to build a TCP echo server

[Chen]

Bill,

Thanks for the pointers, I will grap a book about real socket programming
to read

Could you show me how to get to the download section to get the sample
mentioned by Simon?  Hopefully the sample will give me more info to
create a TCP echo server 

Regards,

Chen


> Chen,
>
>  
>
> When NO_SYS=1, there is a lot more to do than you had to prior just
> calling
> tcp_tick().  I use the following code to update the lwIP
> timers.  You can
> call this every mS (or to be more efficient, every 250mS since that is
> the
> LCD of the all of the modulus operands).  I essence, this becomes
> your
> tcp_tick for lwIP.  For the rest of your program, I'd switch to the
> more
> standard socket interface in lwIP.  The Rabbit stack wasn't really
> socket
> compatible as their naming might imply.
>
>  
>
> Bill
>
>  
>
> void        lwipProcessTimers( void
> )
>
> {
>
> void             
> ip_reass_tmr( void );
>
>  
>
>             if(
> (lwip_mS % TCP_TMR_INTERVAL) == 0 ) tcp_tmr();
>
>             if(
> (lwip_mS % ARP_TMR_INTERVAL) == 0 ) etharp_tmr();
>
> #if IP_REASSEMBLY
>
>             if(
> (lwip_mS % IP_TMR_INTERVAL) == 0 ) ip_reass_tmr();
>
> #endif
>
> #if LWIP_AUTOIP
>
>             if(
> (lwip_mS % AUTOIP_TMR_INTERVAL ) == 0 ) autoip_tmr();
>
> #endif
>
> #if LWIP_IGMP
>
>             if(
> (lwip_mS % IGMP_TMR_INTERVAL ) == 0 ) igmp_tmr(); 
>
> #endif
>
> #if LWIP_DHCP
>
>             if(
> (lwip_mS % DHCP_FINE_TIMER_MSECS ) == 0 ) dhcp_fine_tmr();
>
>             if(
> (lwip_mS % (DHCP_COARSE_TIMER_SECS*1000) ) == 0 )
> dhcp_coarse_tmr();
>
> #endif
>
> #if LWIP_DNS
>
>             if(
> (lwip_mS % DNS_TMR_INTERVAL) == 0 ) dns_tmr();
>
> #endif
>
> }