/* * Ouroboros - Copyright (C) 2016 * * A simple echo application * * Sander Vrijders <sander.vrijders@intec.ugent.be> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <stdbool.h> #include <signal.h> #include <unistd.h> #include <stdlib.h> #include <ouroboros/dev.h> #define DIF_NAME "*" void shutdown_server(int signo) { char * dif = DIF_NAME; if (ap_unreg(&dif, 1)) { printf("Failed to unregister application.\n"); ap_fini(); exit(EXIT_FAILURE); } ap_fini(); exit(EXIT_SUCCESS); } int server_main() { int server_fd = 0; int client_fd = 0; char * dif = DIF_NAME; char * client_name = NULL; char buf[BUF_SIZE]; ssize_t count = 0; printf("Starting the server.\n"); /* Manual cleanup is required for now */ if (signal(SIGINT, shutdown_server) == SIG_ERR) { printf("Can't install signal handler.\n"); return -1; } if (ap_init(SERVER_AP_NAME)) { printf("Failed to init AP.\n"); return -1; } server_fd = ap_reg(&dif, 1); if (server_fd < 0) { printf("Failed to register application.\n"); ap_fini(); return -1; } while (true) { client_fd = flow_accept(server_fd, &client_name, NULL); if (client_fd < 0) { printf("Failed to accept flow.\n"); break; } printf("New flow from %s.\n", client_name); if (flow_alloc_resp(client_fd, 0)) { printf("Failed to give an allocate response.\n"); flow_dealloc(client_fd); continue; } count = flow_read(client_fd, (void **) &buf, BUF_SIZE); if (count < 0) { printf("Failed to read SDU.\n"); flow_dealloc(client_fd); continue; } printf("Message from client is %.*s.\n", (int) count, buf); if (flow_write(client_fd, buf, count) == -1) { printf("Failed to write SDU.\n"); flow_dealloc(client_fd); continue; } flow_dealloc(client_fd); } ap_fini(); return 0; }