/**
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed 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 com.google.apphosting.tests.usercode.testservlets;
import java.io.IOException;
import java.util.Enumeration;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class PrintHeaders extends HttpServlet {
@SuppressWarnings("unchecked")
public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException {
List<String> headers = new ArrayList<String>();
Enumeration<String> headersEnum = req.getHeaderNames();
while (headersEnum.hasMoreElements()) {
headers.add(headersEnum.nextElement());
}
Collections.sort(headers);
res.setContentType("text/plain");
for (String header : headers) {
res.getWriter().println(header + ": " + req.getHeader(header));
}
}
}