Function createSentinelAddr

app/redis-6.2.6/src/sentinel.c:599–617

Create a sentinelAddr object and return it on success. * On error NULL is returned and errno is set to: * ENOENT: Can't resolve the hostname. * EINVAL: Invalid port number. */

 *  EINVAL: Invalid port number.
 */
sentinelAddr *createSentinelAddr(char *hostname, int port) {
    char ip[NET_IP_STR_LEN];
    sentinelAddr *sa;

    if (port < 0 || port > 65535) {
        errno = EINVAL;
        return NULL;
    }
    if (anetResolve(NULL,hostname,ip,sizeof(ip),
                    sentinel.resolve_hostnames ? ANET_NONE : ANET_IP_ONLY) == ANET_ERR) {
        errno = ENOENT;
        return NULL;
    }
    sa = zmalloc(sizeof(*sa));
    sa->hostname = sdsnew(hostname);
    sa->ip = sdsnew(ip);
    sa->port = port;
    return sa;
}

/* Return a duplicate of the source address. */
sentinelAddr *dupSentinelAddr(sentinelAddr *src) {