code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC licenses this file
  // to you under the Apache License, Version 2.0 (the
  // "License"); you may not use this file except in compliance
  // with the License.  You may obtain a copy of the License at
  //
  //   http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing,
  // software distributed under the License is distributed on an
  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  // KIND, either express or implied.  See the License for the
  // specific language governing permissions and limitations
  // under the License.
  
  package org.openqa.selenium.environment.webserver;
  
  import com.google.common.net.MediaType;
  import java.io.UncheckedIOException;
  import org.openqa.selenium.remote.http.Contents;
  import org.openqa.selenium.remote.http.HttpHandler;
  import org.openqa.selenium.remote.http.HttpRequest;
  import org.openqa.selenium.remote.http.HttpResponse;
  
  class GeneratedJsTestHandler implements HttpHandler {
  
    private final String stripPrefix;
  
    public GeneratedJsTestHandler(String stripPrefix) {
      this.stripPrefix = stripPrefix;
    }
  
    @Override
    public HttpResponse execute(HttpRequest req) throws UncheckedIOException {
      String path = req.getUri();
      if (path.startsWith(stripPrefix)) {
        path = path.substring(stripPrefix.length());
      }
      String symbol = path.replace("../", "").replace("/", "$");
      String data =
          ("<!DOCTYPE html>\n"
              + "<html>\n"
              + "<head>\n"
              + "<meta http-equiv=\"X-UA-Compatible\" content=\"IE-Edge\">\n"
              + "<!-- File generated by "
              + getClass().getName()
              + " -->\n"
              + "<title>"
              + path
              + "</title>\n"
              + "<script src=\"/third_party/closure/goog/base.js\"></script>\n"
              + "<script src=\"/javascript/deps.js\"></script>\n"
              + "<script>\n"
              + "  (function() {\n"
              + "    var path = '../../.."
              + path
              + "';\n"
              + "    var loadFlags = goog.dependencies_.loadFlags[path];\n"
              + "    goog.addDependency(path, ['"
              + symbol
              + "'],\n"
              + "        goog.dependencies_.requires['../../.."
              + path
              + "'] || [],\n"
              + "        (loadFlags && loadFlags['module'] == 'goog'));\n"
              + "    goog.require('"
              + symbol
              + "');\n"
              + "  })()\n"
              + "</script></head><body></body></html>");
      //
      //    resp.setStatus(HttpServletResponse.SC_OK);
      //    resp.setContentType(MediaType.HTML_UTF_8.toString());
      //    resp.setContentLength(data.length);
      //
      //    OutputStream stream = resp.getOutputStream();
      //    stream.write(data);
      //    stream.flush();
      //    stream.close();
      return new HttpResponse()
          .setHeader("Content-Type", MediaType.HTML_UTF_8.toString())
          .setContent(Contents.utf8String(data));
    }
  }
  