/* * Example of server using UDP protocol. */ #include "inet.h" main(argc, argv) int argc; char *argv[]; { int sockfd; struct sockaddr_in serv_addr, cli_addr; pname = argv[0]; /* * Open a UDP socket (an Internet datagram socket). */ if ( (sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) err_dump("server: can't open datagram socket"); /* * Bind our local address so that the client can send to us. */ bzero((char *) &serv_addr, sizeof(serv_addr)); serv_addr.sin_family = AF_INET; serv_addr.sin_addr.s_addr = htonl(INADDR_ANY); serv_addr.sin_port = htons(SERV_UDP_PORT); if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) err_dump("server: can't bind local address"); dg_echo(sockfd, (struct sockaddr *) &cli_addr, sizeof(cli_addr)); /* NOTREACHED */ }