Extended addresses API (was Re: SIPP API question)

["Daniel L. McDonald" <[e-mail]>]

The latest version of the SIPP API document
(draft-ietf-sipp-bsd-api-02.txt), contains this new flavor of BSD sockaddr:

           struct sockaddr_sipp {
                   short            ss_family;  /* AF_SIPP */
                   u_short          ss_port;
                   u_short          ss_reserved;
                   u_short          ss_len;     /* Number of SIPP addresses */
                   struct sipp_addr ss_addr[7]; /* SIPP Addr Seq */
           };

Notice the array for address sequences at the end.  I imagine this can grow
if it needs to support more than a sequence of 7 addresses.

BTW, if you are familiar with the newer BSD sockaddr structures, that for
some oddball reason split the *_family halfword into two bytes, one for
family, and one for length, you can try Dan's special BSD/386 version of
sockaddr_sipp, which looks like:

	struct sockaddr_sipp
	{
	  u_char ss_socklen;   /* For BSDI compatibility. */
	  u_char ss_family;
	  u_short ss_port;
	  u_short ss_reserved;
	  u_short ss_len;
	  struct sipp_addr ss_addr[7];
	};

Hope this helps!

Dan McD.