Make Socket::connect try all addresses given.

tests/standalone/io/socket_test.dart

Index: tests/standalone/io/socket_test.dart
diff --git a/tests/standalone/io/socket_test.dart b/tests/standalone/io/socket_test.dart
index 3ebadf8043ea4fc2d914123ba8795927ac30dfdc..5f7253a8d0f81ad1cc27462a8069be051aa74a70 100644
--- a/tests/standalone/io/socket_test.dart
+++ b/tests/standalone/io/socket_test.dart
@@ -199,6 +199,35 @@ void testConnectStreamDataCloseCancel(bool useDestroy) {
   });
 }
 
+
+void testConnectMultipleInternetAddress() {
+  // Ip addresses are invalid, if they start with '0'. We use this fact, to
+  // avoid waiting for timeout.
+  asyncStart();
+  ServerSocket.bind(InternetAddress.LOOPBACK_IP_V4, 0).then((server) {
+    server.listen(
+        (client) {
+          client.destroy();
+          server.close();
+          asyncEnd();
+        });
+    var addresses = [new InternetAddress("0.42.42.42"),
+                     new InternetAddress("127.0.0.1")];
+    Socket.connect(addresses, server.port).then((socket) {
+      socket.destroy();
+    });
+  });
+
+  var addresses = [new InternetAddress("0.42.42.42"),
+                   new InternetAddress("0.42.42.43")];
+  asyncStart();
+  Socket.connect(addresses, 3213)
+      .catchError((error) {
+        Expect.equals("0.42.42.43", error.address.host);
+        asyncEnd();
+      });
+}
+
 main() {
   testArguments();
   testSimpleBind();
@@ -211,4 +240,5 @@ main() {
   testConnectStreamDataClose(false);
   testConnectStreamDataCloseCancel(true);
   testConnectStreamDataCloseCancel(false);
+  testConnectMultipleInternetAddress();
 }