On 22/03/2022 16:22, Michael Richardson wrote:
Michael Wojcik <Michael.Wojcik@xxxxxxxxxxxxxx> wrote:
> The RFC specifically mentions using this API to retrieve and set
> addresses, so it seems like a fix for issue 5257 does need to use it,
> if that's to be done in a portable way.
> 3542 is only Informational, but I'd expect most or all platforms with
> IPv6 support to conform to it.
The issue isn't whether we can expect it to be standard.
The issue is what we can use as a signal that the header exists.
To date, I don't think that openssl has had to know if IPv6 existed or not on
a particular platform.
internal/sockets.h has this snippet in it:
/*
* Some IPv6 implementations are broken, you can disable them in known
* bad versions.
*/
# if !defined(OPENSSL_USE_IPV6)
# if defined(AF_INET6)
# define OPENSSL_USE_IPV6 1
# else
# define OPENSSL_USE_IPV6 0
# endif
# endif
There is already code in bss_dgram.c that is conditionally compiled on
OPENSSL_USE_IPV6. Is it reasonable to assume that if AF_INET6 is defined
then ip6.h exists?
Matt
