I attach the first attempt on SO_REUSEPORT. The patch is available
either at https://github.com/foxik/libmicrohttpd/commit/9ce9422742e10458f87275ea202a982e00c2b88c
or attached. (It is against the version with
MHD_DAEMON_OPTION_CURRENT_CONNECTIONS, but I can rebase it to current
SVN HEAD if you want.)
It seems that a reasonably multiplatform way of detecting SO_REUSEPORT is
#ifdef SO_REPOSEPORT
which is used for example by Perl. For SO_EXCLUSIVEADDRUSE, the same
strategy seems to work too, according to Windows SDK headers and MinGW
WinAPI headers.
The current patch adds an option to allowing/disallowing address:port
reuse. One remark:
- currently both nonexisting SO_xxx and setsockopt failure are fatal and
MHD_start_daemon fails. That may be too harsh -- maybe the
MHD_OPTION_LISTENING_ADDRESS_REUSE should be only a hint.
Nevertheless, as one can freely not use
MHD_OPTION_LISTENING_ADDRESS_REUSE option, I chose the "fail on error"
behaviour.
Thanks,
cheers,
Milan Straka
Original patch modified to get rid of some redundant USE_DEBUG
checks, fix indentation, and #ifndef SO_REUSEPORT on Linux,
we try be #defining it to 15 ourselves.
Remove redundant -no-undefined (it's part of mandatory MHD_LIB_LDFLAGS
now)
Remove --export-all-symbols for W32 (visibility is used instead)
Add -fvisibility=hidden configure check (shamelessly borrowed from GTK)
Remove unused -export-symbols-regex check
Define _MHD_EXTERN to "extern" if it's undefined (this is what clients
get)
Mark all public functions with _MHD_EXTERN
Remove HIDDEN_SYMBOL definition
Don't mark hidden functions with HIDDEN_SYMBOL (everything that is not
explicitly public is hidden by default now)
Change constructor macros a bit to apply _MHD_EXTERN to them cleanly
Use HIDDEN_VISIBILITY_CFLAGS when compiling libraries
Remove EXPORT.sym files, don't mention them in EXTRA_DIST, don't use
them to define a list of exported functions
Remove redundant -no-undefined, make sure only the one that gets into
Makefiles directly remains, remove -Wl prefix from it
Christian Grothoff
Evgeny Grin (Karlson2k)
LRN
Andrey Uzunov