test: fix test failure on linux after edd2fcc

test/simple/test-net-connect-options-ipv6.js

@@ -22,42 +22,51 @@
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
+var dns = require('dns');
 
 var serverGotEnd = false;
 var clientGotEnd = false;
 
-var server = net.createServer({allowHalfOpen: true}, function(socket) {
-  socket.resume();
-  socket.on('end', function() {
-    serverGotEnd = true;
-  });
-  socket.end();
-});
+dns.lookup('localhost', 6, function(err) {
+  if (err) {
+    console.error('Looks like IPv6 is not really supported');
+    console.error(err);
+    return;
+  }
 
-server.listen(common.PORT, '::1', function() {
-  var client = net.connect({
-    host: 'localhost',
-    port: common.PORT,
-    family: 6,
-    allowHalfOpen: true
-  }, function() {
-    console.error('client connect cb');
-    client.resume();
-    client.on('end', function() {
-      clientGotEnd = true;
-      setTimeout(function() {
-        assert(client.writable);
-        client.end();
-      }, 10);
+  var server = net.createServer({allowHalfOpen: true}, function(socket) {
+    socket.resume();
+    socket.on('end', function() {
+      serverGotEnd = true;
     });
-    client.on('close', function() {
-      server.close();
+    socket.end();
+  });
+
+  server.listen(common.PORT, '::1', function() {
+    var client = net.connect({
+      host: 'localhost',
+      port: common.PORT,
+      family: 6,
+      allowHalfOpen: true
+    }, function() {
+      console.error('client connect cb');
+      client.resume();
+      client.on('end', function() {
+        clientGotEnd = true;
+        setTimeout(function() {
+          assert(client.writable);
+          client.end();
+        }, 10);
+      });
+      client.on('close', function() {
+        server.close();
+      });
     });
   });
-});
 
-process.on('exit', function() {
-  console.error('exit', serverGotEnd, clientGotEnd);
-  assert(serverGotEnd);
-  assert(clientGotEnd);
+  process.on('exit', function() {
+    console.error('exit', serverGotEnd, clientGotEnd);
+    assert(serverGotEnd);
+    assert(clientGotEnd);
+  });
 });