all flags start with MHD_USE_, rename MHD_ALLOW_UPGRADE to MHD_USE_UPGRADE for consistency

doc/libmicrohttpd.texi

@@ -591,7 +591,7 @@ Enable TCP_FASTOPEN on the listen socket.  TCP_FASTOPEN is currently
 supported on Linux >= 3.6.  On other systems using this option with
 cause @code{MHD_start_daemon} to fail.
 
-@item MHD_ALLOW_UPGRADE
+@item MHD_USE_UPGRADE
 @cindex upgrade
 This option must be set if you want to upgrade connections
 (via ``101 Switching Protocols'' responses).  This requires MHD to

src/examples/upgrade_example.c

@@ -275,7 +275,7 @@ main (int argc,
       printf ("%s PORT\n", argv[0]);
       return 1;
     }
-  d = MHD_start_daemon (MHD_ALLOW_UPGRADE | MHD_USE_SELECT_INTERNALLY | MHD_USE_DEBUG,
+  d = MHD_start_daemon (MHD_USE_UPGRADE | MHD_USE_SELECT_INTERNALLY | MHD_USE_DEBUG,
                         atoi (argv[1]),
                         NULL, NULL,
                         &ahc_echo, NULL,

src/include/microhttpd.h

@@ -690,7 +690,7 @@ enum MHD_FLAG
    * "Upgrade" may require usage of additional internal resources,
    * which we do not want to use unless necessary.
    */
-  MHD_ALLOW_UPGRADE = 32768
+  MHD_USE_UPGRADE = 32768
 
 };
 
@@ -2859,7 +2859,7 @@ enum MHD_FEATURE
 
   /**
    * Get whether HTTP "Upgrade" is supported.
-   * If supported then #MHD_ALLOW_UPGRADE, #MHD_upgrade_action() and
+   * If supported then #MHD_USE_UPGRADE, #MHD_upgrade_action() and
    * #MHD_create_response_for_upgrade() can be used.
    */
   MHD_FEATURE_UPGRADE = 17

src/microhttpd/connection.c

@@ -3455,11 +3455,11 @@ MHD_queue_response (struct MHD_Connection *connection,
 #ifdef UPGRADE_SUPPORT
   daemon = connection->daemon;
   if ( (NULL != response->upgrade_handler) &&
-       (0 == (daemon->options & MHD_ALLOW_UPGRADE)) )
+       (0 == (daemon->options & MHD_USE_UPGRADE)) )
     {
 #ifdef HAVE_MESSAGES
       MHD_DLOG (daemon,
-                _("Attempted 'upgrade' connection on daemon without MHD_ALLOW_UPGRADE option!\n"));
+                _("Attempted 'upgrade' connection on daemon without MHD_USE_UPGRADE option!\n"));
 #endif
       return MHD_NO;
     }

src/microhttpd/daemon.c

@@ -4639,7 +4639,7 @@ setup_epoll_to_listen (struct MHD_Daemon *daemon)
   if (-1 == daemon->epoll_fd)
     return MHD_NO;
 #if defined(HTTPS_SUPPORT) && defined(UPGRADE_SUPPORT)
-  if (0 != (MHD_ALLOW_UPGRADE & daemon->options))
+  if (0 != (MHD_USE_UPGRADE & daemon->options))
     {
        daemon->epoll_upgrade_fd = setup_epoll_fd (daemon);
        if (MHD_INVALID_SOCKET == daemon->epoll_upgrade_fd)
@@ -4740,7 +4740,7 @@ MHD_start_daemon_va (unsigned int flags,
   if (0 != (flags & MHD_USE_TCP_FASTOPEN))
     return NULL;
 #endif
-  if (0 != (flags & MHD_ALLOW_UPGRADE))
+  if (0 != (flags & MHD_USE_UPGRADE))
     {
 #ifdef UPGRADE_SUPPORT
       flags |= MHD_USE_SUSPEND_RESUME;
@@ -5449,7 +5449,7 @@ close_all_connections (struct MHD_Daemon *daemon)
   struct MHD_Connection *pos;
   const _MHD_bool used_thr_p_c = (0 != (daemon->options & MHD_USE_THREAD_PER_CONNECTION));
 #ifdef UPGRADE_SUPPORT
-  const _MHD_bool upg_allowed = (0 != (daemon->options & MHD_ALLOW_UPGRADE));
+  const _MHD_bool upg_allowed = (0 != (daemon->options & MHD_USE_UPGRADE));
 #endif /* UPGRADE_SUPPORT */
 #if defined(HTTPS_SUPPORT) && defined(UPGRADE_SUPPORT)
   struct MHD_UpgradeResponseHandle *urh;

src/microhttpd/response.c

@@ -692,7 +692,7 @@ MHD_response_execute_upgrade_ (struct MHD_Response *response,
   struct MHD_UpgradeResponseHandle *urh;
   size_t rbo;
 
-  if (0 == (daemon->options & MHD_ALLOW_UPGRADE))
+  if (0 == (daemon->options & MHD_USE_UPGRADE))
     return MHD_NO;
 
   if (NULL ==

src/microhttpd/test_upgrade.c

@@ -61,7 +61,7 @@ test_upgrade (int flags,
 
   done = 0;
 
-  d = MHD_start_daemon (flags | MHD_USE_DEBUG | MHD_ALLOW_UPGRADE,
+  d = MHD_start_daemon (flags | MHD_USE_DEBUG | MHD_USE_UPGRADE,
                         1080,
                         NULL, NULL,
                         &ahc_upgrade, NULL,

src/microhttpd/test_upgrade_ssl.c

@@ -139,7 +139,7 @@ test_upgrade (int flags,
 
   done = 0;
 
-  d = MHD_start_daemon (flags | MHD_USE_DEBUG | MHD_ALLOW_UPGRADE | MHD_USE_TLS,
+  d = MHD_start_daemon (flags | MHD_USE_DEBUG | MHD_USE_UPGRADE | MHD_USE_TLS,
                         1080,
                         NULL, NULL,
                         &ahc_upgrade, NULL,