client: ipv6 reject when lws_getaddrinfo46 failed

https://github.com/warmcat/libwebsockets/issues/978

diff --git a/lib/client-handshake.c b/lib/client-handshake.c
index 42d1a9b..6ae27d2 100644 (file)
--- a/lib/client-handshake.c
+++ b/lib/client-handshake.c
@@ -111,6 +111,14 @@ lws_client_connect_2(struct lws *wsi)
 #ifdef LWS_USE_IPV6
        if (wsi->ipv6) {
 
+               if (n) {
+                       /* lws_getaddrinfo46 failed, there is no usable result */
+                       lwsl_notice("%s: lws_getaddrinfo46 failed %d\n",
+                                       __func__, n);
+                       cce = "ipv6 lws_getaddrinfo46 failed";
+                       goto oom4;
+               }
+
                memset(&sa46, 0, sizeof(sa46));
 
                sa46.sa6.sin6_family = AF_INET6;