1 files changed, 133 insertions, 0 deletions

diff --git a/doc/libmicrohttpd.texi b/doc/libmicrohttpd.texi
index 91579c62..b0a1000b 100644
--- a/doc/libmicrohttpd.texi
+++ b/doc/libmicrohttpd.texi
@@ -65,6 +65,7 @@ Free Documentation License".
 * microhttpd-dauth::            Utilizing Authentication.
 * microhttpd-post::             Adding a @code{POST} processor.
 * microhttpd-info::             Obtaining and modifying status information.
+* microhttpd-util::             Utilities.
 
 Appendices
 
@@ -2575,6 +2576,138 @@ zero for no timeout.
 @end deftp
 
 
+
+@c ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+@c ------------------------------------------------------------
+@node microhttpd-util
+@chapter Utility functions.
+
+
+@menu
+* microhttpd-util feature::       Test supported MHD features
+* microhttpd-util unescape::      Unescape strings
+@end menu
+
+
+@c ------------------------------------------------------------
+@node microhttpd-util feature
+@section Testing for supported MHD features
+
+
+@deftp {Enumeration} MHD_FEATURE
+Values of this enum are used to specify what
+information about a daemon is desired.
+@table @code
+@item MHD_FEATURE_MESSAGES
+Get whether messages are supported. If supported then in debug
+mode messages can be printed to stderr or to external logger.
+
+@item MHD_FEATURE_SSL
+Get whether HTTPS is supported.  If supported then flag
+MHD_USE_SSL and options MHD_OPTION_HTTPS_MEM_KEY,
+MHD_OPTION_HTTPS_MEM_CERT, MHD_OPTION_HTTPS_MEM_TRUST,
+MHD_OPTION_HTTPS_MEM_DHPARAMS, MHD_OPTION_HTTPS_CRED_TYPE,
+MHD_OPTION_HTTPS_PRIORITIES can be used.
+
+@item MHD_FEATURE_HTTPS_CERT_CALLBACK
+Get whether option #MHD_OPTION_HTTPS_CERT_CALLBACK is
+supported.
+
+@item MHD_FEATURE_IPv6
+Get whether IPv6 is supported. If supported then flag
+MHD_USE_IPv6 can be used.
+
+@item MHD_FEATURE_IPv6_ONLY
+Get whether IPv6 without IPv4 is supported. If not supported
+then IPv4 is always enabled in IPv6 sockets and
+flag MHD_USE_DUAL_STACK if always used when MHD_USE_IPv6 is
+specified.
+
+@item MHD_FEATURE_POLL
+Get whether @code{poll()} is supported. If supported then flag
+MHD_USE_POLL can be used.
+
+@item MHD_FEATURE_EPOLL
+Get whether @code{epoll()} is supported. If supported then Flags
+MHD_USE_EPOLL_LINUX_ONLY and
+MHD_USE_EPOLL_INTERNALLY_LINUX_ONLY can be used.
+
+@item MHD_FEATURE_SHUTDOWN_LISTEN_SOCKET
+Get whether shutdown on listen socket to signal other
+threads is supported. If not supported flag
+MHD_USE_PIPE_FOR_SHUTDOWN is automatically forced.
+
+@item MHD_FEATURE_SOCKETPAIR
+Get whether a @code{socketpair()} is used internally instead of
+a @code{pipe()} to signal other threads.
+
+@item MHD_FEATURE_TCP_FASTOPEN
+Get whether TCP Fast Open is supported. If supported then
+flag MHD_USE_TCP_FASTOPEN and option
+MHD_OPTION_TCP_FASTOPEN_QUEUE_SIZE can be used.
+
+@item MHD_FEATURE_BASIC_AUTH
+Get whether HTTP Basic authorization is supported. If supported
+then functions @code{MHD_basic_auth_get_username_password()} and
+@code{MHD_queue_basic_auth_fail_response()} can be used.
+
+@item MHD_FEATURE_DIGEST_AUTH
+Get whether HTTP Digest authorization is supported. If
+supported then options MHD_OPTION_DIGEST_AUTH_RANDOM,
+MHD_OPTION_NONCE_NC_SIZE and functions @code{MHD_digest_auth_check()},
+can be used.
+
+@item MHD_FEATURE_POSTPROCESSOR
+Get whether postprocessor is supported. If supported then
+functions @code{MHD_create_post_processor()},
+@code{MHD_post_process()}, @code{MHD_destroy_post_processor()}
+can be used.
+
+@end table
+@end deftp
+
+
+
+@deftypefun {int} MHD_is_feature_supported (enum MHD_FEATURE feature)
+Get information about supported MHD features.  Indicate that MHD was
+compiled with or without support for particular feature. Some features
+require additional support by the kernel.  However, kernel support is not
+checked by this function.
+
+@table @var
+@item feature
+type of requested information
+@end table
+
+Returns @code{MHD_YES} if the feature is supported,
+and @code{MHD_NO} if not.
+@end deftypefun
+
+
+@c ------------------------------------------------------------
+@node microhttpd-util unescape
+@section Unescape strings
+
+@deftypefun {size_t} MHD_http_unescape (char *val)
+Process escape sequences ('%HH') Updates val in place; the result
+should be UTF-8 encoded and cannot be larger than the input.  The
+result must also still be 0-terminated.
+
+@table @var
+@item val
+value to unescape (modified in the process), must be
+a 0-terminated UTF-8 string.
+@end table
+
+Returns length of the resulting val (@code{strlen(val)} may be
+shorter afterwards due to elimination of escape sequences).
+
+@end deftypefun
+
+
+
+
 @c ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++