Fix socket_source_address_test

tests/standalone/io/socket_source_address_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 
 import "dart:async";
 import "dart:io";
 
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
@@ skipping 89 matching lines @@
   asyncStart();
 
   // Connect with IPv4 source addesses.
   for (var sourceAddress in ipV4SourceAddresses) {
     if (!v6Only) {
       var s = await connectFunction(InternetAddress.LOOPBACK_IP_V4,
                                    server.port,
                                    sourceAddress: sourceAddress);
       closeDestroyFunction(s);
     } else {
-      // Cannot use an IPv6 source address to connect to IPv6 if
+      // Cannot use an IPv4 source address to connect to IPv6 if
       // v6Only is specified.
-      await throws(() => connectFunction(InternetAddress.LOOPBACK_IP_V4,
+      await throws(() => connectFunction(InternetAddress.LOOPBACK_IP_V6,
                                          server.port,
                                          sourceAddress: sourceAddress),
                    (e) => e is SocketException);
     }
   }
 
   // Connect with IPv6 source addesses.
   for (var sourceAddress in ipV6SourceAddresses) {
     if (bindAddress.type == InternetAddressType.IP_V6) {
       var s = await connectFunction(InternetAddress.LOOPBACK_IP_V6,
                                     server.port,
                                     sourceAddress: sourceAddress);
       closeDestroyFunction(s);
     } else {
       // Cannot use an IPv6 source address to connect to IPv4.
-      await throws(() => connectFunction(InternetAddress.LOOPBACK_IP_V6,
+      await throws(() => connectFunction(InternetAddress.LOOPBACK_IP_V4,
                                          server.port,
                                          sourceAddress: sourceAddress),
                    (e) => e is SocketException);
     }
   }
 
   await allConnected.future;
   await server.close();
   asyncEnd();
 }
@@ skipping 28 matching lines @@
     await testConnect(
         InternetAddress.ANY_IP_V6, true, RawSocket.connect, (s) => s.close());
   });
   await retry(() async {
     await testConnect(
         InternetAddress.ANY_IP_V6, true, Socket.connect, (s) => s.destroy());
   });
 
   asyncEnd();
 }