From 4052c747971f0f57cb14dd5cc9a64d7b8788e733 Mon Sep 17 00:00:00 2001
From: Santiago Gimeno <santiago.gimeno@gmail.com>
Date: Wed, 11 Nov 2015 10:10:19 +0100
Subject: [PATCH] test,freebsd: skip udp_dual_stack if not supported
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By default, FreeBSD has net.inet6.ip6.v6only set to 1 (i.e., no dual stack
support). A new function can_ipv6_ipv4_dual is added to check its value and
decide whether `udp_dual_stack` test must be skipped or not.

PR-URL: https://github.com/libuv/libuv/pull/614
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
---
 test/test-udp-ipv6.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/test/test-udp-ipv6.c b/test/test-udp-ipv6.c
index 1d5720ce..1b0db78b 100644
--- a/test/test-udp-ipv6.c
+++ b/test/test-udp-ipv6.c
@@ -26,6 +26,10 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef __FreeBSD__
+#include <sys/sysctl.h>
+#endif
+
 #define CHECK_HANDLE(handle)                \
   ASSERT((uv_udp_t*)(handle) == &server     \
       || (uv_udp_t*)(handle) == &client     \
@@ -43,6 +47,18 @@ static int send_cb_called;
 static int recv_cb_called;
 static int close_cb_called;
 
+#ifdef __FreeBSD__
+static int can_ipv6_ipv4_dual() {
+  int v6only;
+  size_t size = sizeof(int);
+
+  if (sysctlbyname("net.inet6.ip6.v6only", &v6only, &size, NULL, 0))
+    return 0;
+
+  return v6only != 1;
+}
+#endif
+
 
 static void alloc_cb(uv_handle_t* handle,
                      size_t suggested_size,
@@ -150,6 +166,11 @@ TEST_IMPL(udp_dual_stack) {
   if (!can_ipv6())
     RETURN_SKIP("IPv6 not supported");
 
+#ifdef __FreeBSD__
+  if (!can_ipv6_ipv4_dual())
+    RETURN_SKIP("IPv6-IPv4 dual stack not supported");
+#endif
+
   do_test(ipv6_recv_ok, 0);
 
   ASSERT(recv_cb_called == 1);