[En-Nut-Discussion] ICMP Sockets

[Ralph Mason]

Hi Mike,

You are correct  I did modify the ICMPHDR file forgot to include the file I
updated (attached).

Yes, I do have a rough version of NAT working for NutOS, but it's not ready
for public consumption yet, it supports multiple PPP interfaces, so you can
have a PPP server.  I plan on releasing it 'some time' when it's more
complete.

Regards
Ralph


> -----Original Message-----
> From: en-nut-discussion-admin at egnite.de
> [mailto:en-nut-discussion-admin at egnite.de]On Behalf Of Mike Cornelius
> Sent: Tuesday, 23 September 2003 1:58
> To: en-nut-discussion at egnite.de
> Subject: RE: [En-Nut-Discussion] ICMP Sockets
>
>
> Hi Ralph,
>
> Thanks a lot for the ICMP code, I've just been getting to use it and
> found that you refer to :-
>
> icp->ident In NutIcmpInput()
>
> The version of ICMPHDR in ip_icmp.h in the distribution that I have has
> a single u_long icmp_spec where I figure ident would go.
>
> What's the deal ?
> Have you modified ICMPHDR and therefore NutIcmpReply() in icmpout.c
> which uses icmp_spec ?
> Or is NutIcmpInput() not quite right ?
> Or something else ?
>
> I also notice the following :-
> #ifdef NAT_SUPPORT
> 			RouteIncommingPacket(nb,IPPROTO_ICMP);
> #else
>
> This is most intriguing, I take it you have or are in the process of
> implementing NAT, this would be most useful, any chance of releasing
> this too?
>
> Regards,
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~
> Mike Cornelius                      Internet: mikec at call-direct.com.au
> Call Direct Cellular Solutions      Phone:    +61 2 9209-4259
> Suite 145                           FAX:      +61 2 9209-4196
> National Innovation Centre     URL:      http://www.call-direct.com.au
> Australian Technology Park
> Eveleigh NSW 1430
> Australia
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~
>
>
> -----Original Message-----
> From: en-nut-discussion-admin at egnite.de
> [mailto:en-nut-discussion-admin at egnite.de] On Behalf Of Ralph Mason
> Sent: Monday, August 11, 2003 6:10 PM
> To: en-Nut-Discussion
> Subject: [En-Nut-Discussion] ICMP Sockets
>
>
> I have implemented ICMP sockets for NutOS if anyone is interested.
>
> You can do tracert, ping etc.
>
> You can also receive unreachable messages etc for a given TCP or UDP
> connection.
>
> Example code
>
> int ping(char* args[],int argc, FILE* f){
>
> 	u_long addr;
> 	ICMPSOCKET* sock;
> 	u_char data[32];
> 	int i;
>
> 	if ( argc < 2 ){
> 		fputs_P(PSTR("usage: ping host [timeout]\r\n"),f);
> 		return -1;
> 	}
>
> 	if( (addr = resolve_address_name(args[1],f)) == 0 ){
> 		cr(f);
> 		return 0;
> 	}
>
> 	sock = NutIcmpCreateSocket(IPPROTO_ICMP,1);
>
> 	fprintf_P(f,PSTR("Pinging %s [%a] with 32
> bytes\r\n\r\n"),args[1],addr);
> 	fflush(f);
>
> 	for( i = 0 ; i < 4 ; i++){
> 		u_long reply_addr;
> 		u_char type;
> 		u_char code;
> 		u_long ticks;
>
> 		NutIcmpSendTo(sock,addr,ICMP_ECHO,0,data,32);
> 		ticks = NutGetTickCount();
>
> 		if (
> NutIcmpReceiveFrom(sock,&reply_addr,&type,&code,data,32,3000) != 0){
>
> 			switch( type){
> 				case ICMP_ECHOREPLY:
> 					fprintf_P(f,PSTR("Relpy from %a
> %i ms\r\n"),reply_addr,
>
> (int)(((NutGetTickCount()-ticks)*1000)/ 40L));
> 					break;
>
> 				default:
> 					fprintf_P(f,PSTR("Relpy from %a
> type %i code %i\r\n"),
>
> reply_addr,type,code);
> 				}
> 			}
> 			else{
> 				fputs_P(PSTR("Request timed
> out.\r\n"),f);
> 			}
>
> 			fflush(f);
> 	}
>
> 	NutIcmpDestroySocket(sock);
>
> 	return 0;
> }
>
>
>
> If you want the code reply via email.
>
> Cheers
> Ralph
>
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