On 12/13/2011 07:26 PM, Sven Geggus wrote:
Hello,
to support dual stack I just changed my code from:
MHD_start_daemon(MHD_NO,...
to
MHD_start_daemon(MHD_USE_IPv6,...
Unfortunately the daemon seems to be ipv6 _only_ now.
How ist this supposed to work?
From generic socket-programming I usually assume AF_INET6 on to
serverside to be both IPv4 and IPv6. Is this different as far as
libmicrohttpd is concerned?
Yes, assuming an IPv6-socket is for both v4 and v6 is considered bad
style and will NOT work on all OSes (and on Linux it'll only work if
your kernel uses a particular, outdated configuration).
The correct way to get dual-stack is to call MHD_start_daemon twice,
once for IPv4 and once for IPv6.
If you want to insist on one listen-socket for both v4 and v6, you can
still force that by doing the bind/listen manually yourself (with the
right socket options and appropriate amount of praying) and then give
that pre-bound listen socket to MHD (MHD_OPTION_LISTEN_SOCKET). But
again, this is NOT the recommended or portable approach.
Happy hacking,
Christian
