#include #include #include #define PORT 8888 #define FILENAME "picture.png" #define MIMETYPE "image/png" long get_file_size (const char *filename) { FILE *fp; fp = fopen (filename, "rb"); if (fp) { long size; if ((0 != fseek (fp, 0, SEEK_END)) || (-1 == (size = ftell (fp)))) size = 0; fclose (fp); return size; } else return 0; } 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) { unsigned char *buffer = NULL; struct MHD_Response *response; long size; FILE *fp; int ret = 0; if (0 != strcmp (method, "GET")) return MHD_NO; size = get_file_size (FILENAME); if (size != 0) { fp = fopen (FILENAME, "rb"); if (fp) { buffer = malloc (size); if (buffer) if (size == fread (buffer, 1, size, fp)) ret = 1; fclose (fp); } } if (!ret) { const char *errorstr = "An internal server error has occured!\ "; if (buffer) free (buffer); response = MHD_create_response_from_data (strlen (errorstr), (void *) errorstr, MHD_NO, MHD_NO); if (response) { ret = MHD_queue_response (connection, MHD_HTTP_INTERNAL_SERVER_ERROR, response); MHD_destroy_response (response); return MHD_YES; } else return MHD_NO; } response = MHD_create_response_from_data (size, (void *) buffer, MHD_YES, MHD_NO); 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_SELECT_INTERNALLY, PORT, NULL, NULL, &answer_to_connection, NULL, MHD_OPTION_END); if (NULL == daemon) return 1; getchar (); MHD_stop_daemon (daemon); return 0; }