Webserver busy

/* This file is part of libmicrohttpd Copyright (C) 2007, 2008 Christian Grothoff (and other contributing authors) Copyright (C) 2016-2022 Evgeny Grin (Karlson2k) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file refuse_post_example.c * @brief example for how to refuse a POST request properly * @author Christian Grothoff and Sebastian Gerhardt * @author Karlson2k (Evgeny Grin) */ #include "platform.h" #include struct handler_param { const char *response_page; }; const char *askpage = "\n\ Upload a file, please!
\n\ \n\ "; #define BUSYPAGE \ "Webserver busyWe are too busy to process POSTs right now." static enum MHD_Result ahc_echo (void *cls, struct MHD_Connection *connection, const char *url, const char *method, const char *version, const char *upload_data, size_t *upload_data_size, void **req_cls) { static int aptr; struct handler_param *param = (struct handler_param *) cls; struct MHD_Response *response; enum MHD_Result ret; (void) cls; /* Unused. Silent compiler warning. */ (void) url; /* Unused. Silent compiler warning. */ (void) version; /* Unused. Silent compiler warning. */ (void) upload_data; /* Unused. Silent compiler warning. */ (void) upload_data_size; /* Unused. Silent compiler warning. */ if ((0 != strcmp (method, "GET")) && (0 != strcmp (method, "POST"))) return MHD_NO; /* unexpected method */ if (&aptr != *req_cls) { *req_cls = &aptr; /* always to busy for POST requests */ if (0 == strcmp (method, "POST")) { response = MHD_create_response_from_buffer_static (strlen (BUSYPAGE), (const void *) BUSYPAGE); ret = MHD_queue_response (connection, MHD_HTTP_SERVICE_UNAVAILABLE, response); MHD_destroy_response (response); return ret; } } *req_cls = NULL; /* reset when done */ response = MHD_create_response_from_buffer_static (strlen (param->response_page), (const void *) param->response_page); ret = MHD_queue_response (connection, MHD_HTTP_OK, response); MHD_destroy_response (response); return ret; } int main (int argc, char *const *argv) { struct MHD_Daemon *d; struct handler_param data_for_handler; if (argc != 2) { printf ("%s PORT\n", argv[0]); return 1; } data_for_handler.response_page = askpage; d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG, atoi (argv[1]), NULL, NULL, &ahc_echo, &data_for_handler, MHD_OPTION_END); if (d == NULL) return 1; (void) getc (stdin); MHD_stop_daemon (d); return 0; } /* end of refuse_post_example.c */