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@ -10,12 +10,9 @@
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struct addrinfo *result; // tableau des adresses réseaux des clients
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struct addrinfo *result; // tableau des adresses réseaux des clients
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// to do : con_client, traite_connexion
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// to do : traite_connexion
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int cree_socket(struct addrinfo hints, char* ip){
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int cree_socket(struct addrinfo hints, char* ip){
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//remplissage de la structure hints contenants la configuration réseau du serveur
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memset(&hints, 0, sizeof(struct addrinfo));
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int s = getaddrinfo(NULL, ip, &hints, &result);
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int s = getaddrinfo(NULL, ip, &hints, &result);
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if (s != 0) {
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if (s != 0) {
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fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
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fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
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@ -48,15 +45,38 @@ void con_client(int *sfd){
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}
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}
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}
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}
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void traite_connexion(int sfd, int s){
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ssize_t nread;
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char buf[BUF_SIZE];
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struct sockaddr_storage peer_addr;
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socklen_t peer_addr_len;
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// Lit les datagrammes et les renvoi au client
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for (;;) {
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peer_addr_len = sizeof(struct sockaddr_storage);
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nread = recvfrom(sfd, buf, BUF_SIZE, 0, (struct sockaddr *) &peer_addr, &peer_addr_len);
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if (nread == -1){
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continue;
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/* ignore la mauvaise requete */
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}
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char host[NI_MAXHOST], service[NI_MAXSERV];
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s = getnameinfo((struct sockaddr *) &peer_addr, peer_addr_len, host, NI_MAXHOST, service, NI_MAXSERV, NI_NUMERICSERV);
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if (s == 0){
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printf("Recu %ld octets de %s:%s\n", (long) nread, host, service);
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}
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else{
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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}
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if (sendto(sfd, buf, nread, 0, (struct sockaddr *) &peer_addr, peer_addr_len) != nread){
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fprintf(stderr, "Erreur d'envoi de la reponse\n");
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}
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}
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}
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int main(int argc, char *argv[]){
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int main(int argc, char *argv[]){
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struct addrinfo hints;
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struct addrinfo hints;
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int s; // s code de retour de getaddrinfo
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int s; // s code de retour de getaddrinfo
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int sfd; // code de retour de l'ouverture du socket
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int sfd; // code de retour de l'ouverture du socket
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struct sockaddr_storage peer_addr;
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socklen_t peer_addr_len;
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ssize_t nread;
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char buf[BUF_SIZE];
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if (argc != 2) { // test du nombre d'arguments entrés
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if (argc != 2) { // test du nombre d'arguments entrés
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fprintf(stderr, "Usage: %s port\n", argv[0]);
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fprintf(stderr, "Usage: %s port\n", argv[0]);
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@ -65,7 +85,8 @@ int main(int argc, char *argv[]){
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char* ip = argv[1]; // récupération de l'ip passée en paramètre du programme
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char* ip = argv[1]; // récupération de l'ip passée en paramètre du programme
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// remplissage de la structure config réseau serveur
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// remplissage de la structure hints contenants la configuration réseau du serveur
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memset(&hints, 0, sizeof(struct addrinfo));
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hints.ai_family = AF_INET6; // utilisation du serveur sur IPv6 (AF_UNSPEC pour IPv4/6)
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hints.ai_family = AF_INET6; // utilisation du serveur sur IPv6 (AF_UNSPEC pour IPv4/6)
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hints.ai_socktype = SOCK_DGRAM; // socket en mode datagramme
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hints.ai_socktype = SOCK_DGRAM; // socket en mode datagramme
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@ -78,23 +99,7 @@ int main(int argc, char *argv[]){
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freeaddrinfo(result); // libère la structure d'adresse client
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freeaddrinfo(result); // libère la structure d'adresse client
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// Lit les datagrammes et les renvoi au client
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traite_connexion(sfd, s);
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for (;;) {
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peer_addr_len = sizeof(struct sockaddr_storage);
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nread = recvfrom(sfd, buf, BUF_SIZE, 0, (struct sockaddr *) &peer_addr, &peer_addr_len);
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if (nread == -1){
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continue; /* ignore la mauvaise requete */
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}
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char host[NI_MAXHOST], service[NI_MAXSERV];
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s = getnameinfo((struct sockaddr *) &peer_addr, peer_addr_len, host, NI_MAXHOST, service, NI_MAXSERV, NI_NUMERICSERV);
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if (s == 0){
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printf("Recu %ld octets de %s:%s\n", (long) nread, host, service);
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}
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else{
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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}
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if (sendto(sfd, buf, nread, 0, (struct sockaddr *) &peer_addr, peer_addr_len) != nread){
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fprintf(stderr, "Erreur d'envoi de la reponse\n");
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}
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}
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}
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}
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