+
+
+int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port)
+{
+ struct addrinfo *ai = NULL;
+ char service[6];
+
+ if (rpc->is_udp == 0) {
+ rpc_set_error(rpc, "Cant not bind UDP. Not UDP context");
+ return -1;
+ }
+
+ snprintf(service, 6, "%d", port);
+ if (getaddrinfo(addr, service, NULL, &ai) != 0) {
+ rpc_set_error(rpc, "Invalid address:%s. "
+ "Can not resolv into IPv4/v6 structure.");
+ return -1;
+ }
+
+ switch(ai->ai_family) {
+ case AF_INET:
+ rpc->fd = socket(ai->ai_family, SOCK_DGRAM, 0);
+ if (rpc->fd == -1) {
+ rpc_set_error(rpc, "Failed to create UDP socket: %s", strerror(errno));
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ if (bind(rpc->fd, (struct sockaddr *)ai->ai_addr, sizeof(struct sockaddr_in)) != 0) {
+ rpc_set_error(rpc, "Failed to bind to UDP socket: %s",strerror(errno));
+ freeaddrinfo(ai);
+ return -1;
+ }
+ break;
+ default:
+ rpc_set_error(rpc, "Can not handle UPD sockets of family %d yet", ai->ai_family);
+ freeaddrinfo(ai);
+ return -1;
+ }
+
+ freeaddrinfo(ai);
+
+ return 0;
+}
+
+int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast)
+{
+ struct addrinfo *ai = NULL;
+ char service[6];
+
+ if (rpc->is_udp == 0) {
+ rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context");
+ return -1;
+ }
+
+ snprintf(service, 6, "%d", port);
+ if (getaddrinfo(addr, service, NULL, &ai) != 0) {
+ rpc_set_error(rpc, "Invalid address:%s. "
+ "Can not resolv into IPv4/v6 structure.");
+ return -1;
+ }
+
+ if (rpc->udp_dest) {
+ free(rpc->udp_dest);
+ rpc->udp_dest = NULL;
+ }
+ rpc->udp_dest = malloc(ai->ai_addrlen);
+ if (rpc->udp_dest == NULL) {
+ rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure");
+ return -1;
+ }
+ memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen);
+ freeaddrinfo(ai);
+
+ rpc->is_broadcast = is_broadcast;
+ setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, &is_broadcast, sizeof(is_broadcast));
+
+ return 0;
+}
+
+struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc)
+{
+ return (struct sockaddr *)&rpc->udp_src;
+}