Description Denys Fedoryshchenko 2018-10-06 19:54:44 EDT

After looking in https://github.com/eclipse/paho.mqtt.embedded-c , specifically https://github.com/eclipse/paho.mqtt.embedded-c/blob/master/MQTTClient-C/src/FreeRTOS/MQTTFreeRTOS.c

I think 	
"if ((ipAddress = FreeRTOS_gethostbyname(addr)) == 0)" and relevant parts in NetworkConnect should be replaced by getaddrinfo, that request and returns ipv6 properly.

For example, in my platform dependent code, freertos as well (it is a bit different from original paho code and important, this particular code is ipv6 only) it is like this

static int NetworkConnect6(Network* n, char *addr, char *service) {
        const struct addrinfo hints = {
                .ai_family = AF_INET6,
                .ai_socktype = SOCK_STREAM,
        };
        struct addrinfo *res;
        int err = getaddrinfo(addr, service, &hints, &res);

        if (err != 0 || res == NULL) {
                return(-1);
        }
        n->my_socket = socket(res->ai_family, res->ai_socktype, 0);
        if (n->my_socket < 0) {
                freeaddrinfo(res);
                return(-2);
        }

        if (connect(n->my_socket, res->ai_addr, res->ai_addrlen) != 0) {
                close(n->my_socket);
                freeaddrinfo(res);
                return(-3);
        }
        freeaddrinfo(res);
        return(0);
}