#include "unp.h" int main(int argc, char **argv) { int sockfd; socklen_t salen; struct addrinfo *res; struct sockaddr *cli, *serv; if (argc != 2) err_quit("usage: test2 "); #ifdef notdef res = Host_serv(argv[1], "daytime", AF_UNSPEC, SOCK_DGRAM); printf("res->ai_addrlen = %d\n", res->ai_addrlen); printf("res->ai_addr = %p\n", res->ai_addr); printf("res->ai_next = %p\n", res->ai_next); printf("res->ai_addr->sa_family = %p\n", res->ai_addr->sa_family); #endif sockfd = Udp_client(argv[1], "13", (void **) &serv, &salen); printf("sockfd = %d\n", sockfd); exit(0); } #ifdef notdef int udp_client(const char *host, const char *serv, void **saptr, socklen_t *lenp) { int sockfd, n; struct addrinfo hints, *res, *ressave; bzero(&hints, sizeof(struct addrinfo)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_DGRAM; if ( (n = getaddrinfo(host, serv, &hints, &res)) != 0) err_quit("udp_client error for %s, %s: %s", host, serv, gai_strerror(n)); ressave = res; do { sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (sockfd >= 0) break; /* success */ } while ( (res = res->ai_next) != NULL); if (res == NULL) /* errno set from final socket() */ err_sys("udp_client error for %s, %s", host, serv); *saptr = Malloc(res->ai_addrlen); memcpy(*saptr, res->ai_addr, res->ai_addrlen); *lenp = res->ai_addrlen; freeaddrinfo(ressave); return(sockfd); } int Udp_client(const char *host, const char *serv, void **saptr, socklen_t *lenptr) { return(udp_client(host, serv, saptr, lenptr)); } #endif