anchor.diff:    TestServerMain testServerMain = new TestServerMain();
     testServerMain.setServerStartedHandler((int port) {
       var request =
  -        SyncHttpClient.getUrl(new Uri.http("127.0.0.1:$port", "/0123456789"));
  +        SyncHttpClient.getUrl(new Uri.http("localhost:$port", "/0123456789"));
       var response = request.close();
       expect(HttpStatus.OK, equals(response.statusCode));
       expect(11, equals(response.contentLength));
  
positive.code: // BSD-style license that can be found in the LICENSE file.
  
  import "dart:async";
  import "dart:isolate";
  import "dart:io";
  import "package:sync_http/sync_http.dart";
  import "package:test/test.dart";
  
  
negative.code:   TestServerMain testServerMain = new TestServerMain();
    testServerMain.setServerStartedHandler((int port) {
      var request =
          SyncHttpClient.getUrl(new Uri.http("localhost:$port", "/huge"));
      var response = request.close();
      String expected =
          new List<int>.generate((1 << 20), (i) => (i + 1) % 256).toString();
  