Github user kavinderd commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/951#discussion_r81863084
--- Diff: src/backend/access/external/pxfutils.c ---
@@ -133,3 +137,60 @@ static void process_request(ClientContext*
client_context, char *uri)
}
+
+/*
+ * Finds ip address of any available loopback interface(ipv4/ipv6).
+ * Returns ip for ipv4 addresses and [ip] for ipv6 addresses.
+ *
+ */
+char* get_loopback_ip_addr() {
+ struct ifaddrs *ifaddr, *ifa;
+ int family, s, n;
+ char host[NI_MAXHOST];
+ char *loopback_addr;
+
+ if (getifaddrs(&ifaddr) == -1) {
+ elog(ERROR, "Unable to obtain list of network interfaces.");
+ }
+
+ for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
+ if (ifa->ifa_addr == NULL)
+ continue;
+
+ family = ifa->ifa_addr->sa_family;
+
+ if (family == AF_INET || family == AF_INET6) {
+ s = getnameinfo(ifa->ifa_addr,
+ (family == AF_INET) ?
+ sizeof(struct
sockaddr_in) :
+ sizeof(struct
sockaddr_in6), host, NI_MAXHOST,
+ NULL, 0, NI_NUMERICHOST);
+ if (s != 0) {
+ elog(WARNING, "Unable to get name information
for interface, getnameinfo() failed: %s\n", gai_strerror(s));
+ }
+
+ //get loopback interface
+ if (ifa->ifa_flags & IFF_LOOPBACK) {
+ if (family == AF_INET)
+ {
+ loopback_addr = palloc(strlen(host) +
1);
+ sprintf(loopback_addr, "%s", host);
--- End diff --
Ok, makes sense. I overlooked the previous line
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