tests: internal: network: prevent Infinite loop for no IPv6 environme…

…nt (#6697)

With no IPv6 supported environment, the current implementation causes
infinite loop to wait ev events for network testing.
We should prevent such protocol glitching issue on test to prevent
stucking test cases.

Signed-off-by: Hiroshi Hatake <hatake@calyptia.com>

tests/internal/network.c

@@ -63,6 +63,10 @@ static void test_client_server(int is_ipv6)
 
     /* Create client and server sockets */
     fd_client = flb_net_socket_create(family, FLB_TRUE);
+    if (errno == EAFNOSUPPORT) {
+        TEST_MSG("This protocol is not supported in this platform");
+        return;
+    }
     TEST_CHECK(fd_client != -1);
 
     fd_server = flb_net_server(TEST_PORT, host);
@@ -94,6 +98,10 @@ static void test_client_server(int is_ipv6)
 
     /* Event loop */
     while (1) {
+        /* Break immediately for invalid status */
+        if (fd_client == -1 || fd_server == -1) {
+            break;
+        }
         mk_event_wait(evl);
         mk_event_foreach(e_item, evl) {
             if (e_item->type == TEST_EV_CLIENT) {