Clean-up and progress on analysis server

pkg/analysis_server/lib/http_server.dart

 // Copyright (c) 2014, 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.
 
 library http.server;
 
 import 'dart:io';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/channel.dart';
 import 'package:analysis_server/src/domain_context.dart';
 import 'package:analysis_server/src/domain_server.dart';
 import 'package:analysis_server/src/get_handler.dart';
 import 'package:args/args.dart';
 
 /**
  * Instances of the class [HttpServer] implement a simple HTTP server. The
  * primary responsibility of this server is to listen for an UPGRADE request and
- * to start an analysis server
+ * to start an analysis server.
  */
 class HttpAnalysisServer {
   /**
    * The name of the application that is used to start a server.
    */
   static const BINARY_NAME = 'server';
 
   /**
    * The name of the option used to print usage information.
    */
@@ skipping 144 matching lines @@
    * server.
    */
   void _returnUnknownRequest(HttpRequest request) {
     HttpResponse response = request.response;
     response.statusCode = HttpStatus.NOT_FOUND;
     response.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
     response.write('Not found');
     response.close();
   }
 }