tls,https: respect address family when connecting

Respect the `{ family: 6 }` address family property when connecting to
a remote peer over TLS.

Fixes: https://github.com/nodejs/node/issues/4139
Fixes: https://github.com/nodejs/node/issues/6440
PR-URL: https://github.com/nodejs/node/pull/6654
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/parallel/test-tls-connect-address-family.js b/test/parallel/test-tls-connect-address-family.js
new file mode 100644
index 0000000000..665a71dfe6
--- /dev/null
+++ b/test/parallel/test-tls-connect-address-family.js
@@ -0,0 +1,27 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const tls = require('tls');
+
+if (!common.hasIPv6) {
+  common.skip('no IPv6 support');
+  return;
+}
+
+const ciphers = 'AECDH-NULL-SHA';
+tls.createServer({ ciphers }, function() {
+  this.close();
+}).listen(common.PORT, '::1', function() {
+  const options = {
+    host: 'localhost',
+    port: common.PORT,
+    family: 6,
+    ciphers: ciphers,
+    rejectUnauthorized: false,
+  };
+  // Will fail with ECONNREFUSED if the address family is not honored.
+  tls.connect(options).once('secureConnect', common.mustCall(function() {
+    assert.strictEqual('::1', this.remoteAddress);
+    this.destroy();
+  }));
+});