/* Feel free to use this example code in any way you see fit (Public Domain) */ #include #ifndef _WIN32 #include #include #else #include #endif #include #include #include #include #include #include #define PORT 8888 #define FILENAME "picture.png" #define MIMETYPE "image/png" static int answer_to_connection (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 **con_cls) { struct MHD_Response *response; int fd; int ret; struct stat sbuf; (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. */ (void)con_cls; /* Unused. Silent compiler warning. */ if (0 != strcmp (method, "GET")) return MHD_NO; if ( (-1 == (fd = open (FILENAME, O_RDONLY))) || (0 != fstat (fd, &sbuf)) ) { const char *errorstr = "An internal server error has occured!\ "; /* error accessing file */ if (fd != -1) (void) close (fd); response = MHD_create_response_from_buffer (strlen (errorstr), (void *) errorstr, MHD_RESPMEM_PERSISTENT); if (NULL != response) { ret = MHD_queue_response (connection, MHD_HTTP_INTERNAL_SERVER_ERROR, response); MHD_destroy_response (response); return ret; } else return MHD_NO; } response = MHD_create_response_from_fd_at_offset64 (sbuf.st_size, fd, 0); MHD_add_response_header (response, "Content-Type", MIMETYPE); ret = MHD_queue_response (connection, MHD_HTTP_OK, response); MHD_destroy_response (response); return ret; } int main () { struct MHD_Daemon *daemon; daemon = MHD_start_daemon (MHD_USE_INTERNAL_POLLING_THREAD, PORT, NULL, NULL, &answer_to_connection, NULL, MHD_OPTION_END); if (NULL == daemon) return 1; (void) getchar (); MHD_stop_daemon (daemon); return 0; }