#include <sys/types.h> #include <sys/socket.h> #include <netdb.h> int getaddrinfo(char *name,char *service, struct addrinfo *hints, struct addrinfo **res); void freeaddrinfo(struct addrinfo *res);
struct addrinfo { int ai_flags; int ai_family; int ai_socktype; int ai_protocol; size_t ai_addrlen; struct sockaddr *ai_addr; char *ai_canonname; struct addrinfo *ai_next; };
#include <sys/socket.h> #include <netdb.h> int getnameinfo(struct sockaddr *address,socklen_t length, char *name,size_t maxname,char *service,size_t maxservice, int flags);