(usagi-users 02106) Re: multiproto bind() ?

[Abdul Basit <basit@xxxxxxxx>]

and it seems to be if i want to bind on both
i need to use multiple listenfds like listenfd[k];
for multiple protocols ?
is there any other way to cope around with it ?

-- basit

On Sun, 19 Jan 2003, Abdul Basit wrote:

> hey,
>
>  i am trying to bind on all available ipv4 and ipv6 addresses.
> i tried,
>
> -- snippet of code --
>
>         hints.ai_flags = AI_PASSIVE;
>         hints.ai_family = PF_UNSPEC;
>         hints.ai_socktype = SOCK_STREAM;
>
>         if ((n = getaddrinfo(NULL, "7710", &hints, &res)) != 0) {
>                 printf("%s\n", gai_strerror(n));
>         }
>         do {
>
>             listenfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
>
>             if (listenfd < 0)
>                continue;
>
>            setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &len, sizeof(len));
>
>            if (bind(listenfd, res->ai_addr, res->ai_addrlen) == 0)
>                  break;
>
>         } while ((res = res->ai_next) != NULL);
>
> it works fine, and i can telnet to my-host:7710 from ipv4 only and ipv6
> only hosts also, but when i try to print to address family, it always
> gives 28c on freebsd and 10c on Linux indicating AF_INET6
>
> i tried :
>
> -- snippet of code
>
>  listen (listenfd,1024);
>         caddr = malloc(res->ai_addrlen);
>
>         for(;;) {
>
>          slen  = res->ai_addrlen;
>          ptr  = malloc(sizeof(int));
>          *ptr = accept(listenfd, caddr, &slen);
>
>        // using res->ai_family 'd give same result.
>          printf("%uc\n",caddr->sa_family);
>        }
>
> i want to distinguish between clients coming to ipv4 or ipv6
> and print client address ? if i would get sa_family correct
> i can switch(family) { and case for AF_INET and AF_INET6 and
> use inet_ntop to print address ? but i am getting same family
> always (28c/bsd and 10c/linux --> AF_INET6)
>
> any hints?
>
> -- basit
>
>
>
>