Java tutorial
/* * Copyright (c) 2015 AsyncHttpClient Project. All rights reserved. * * This program is licensed to you under the Apache License Version 2.0, * and you may not use this file except in compliance with the Apache License Version 2.0. * You may obtain a copy of the Apache License Version 2.0 at * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, * software distributed under the Apache License Version 2.0 is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under. */ package org.asynchttpclient.test; import org.apache.commons.io.IOUtils; import org.eclipse.jetty.server.Request; import org.eclipse.jetty.server.handler.AbstractHandler; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.servlet.ServletException; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.Enumeration; import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH; import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_MD5; public class EchoHandler extends AbstractHandler { private static final Logger LOGGER = LoggerFactory.getLogger(EchoHandler.class); @Override public void handle(String pathInContext, Request request, HttpServletRequest httpRequest, HttpServletResponse httpResponse) throws IOException, ServletException { LOGGER.debug("Echo received request {} on path {}", request, pathInContext); if (httpRequest.getHeader("X-HEAD") != null) { httpResponse.setContentLength(1); } if (httpRequest.getHeader("X-ISO") != null) { httpResponse.setContentType(TestUtils.TEXT_HTML_CONTENT_TYPE_WITH_ISO_8859_1_CHARSET); } else { httpResponse.setContentType(TestUtils.TEXT_HTML_CONTENT_TYPE_WITH_UTF_8_CHARSET); } if (request.getMethod().equalsIgnoreCase("OPTIONS")) { httpResponse.addHeader("Allow", "GET,HEAD,POST,OPTIONS,TRACE"); } Enumeration<String> e = httpRequest.getHeaderNames(); String headerName; while (e.hasMoreElements()) { headerName = e.nextElement(); if (headerName.startsWith("LockThread")) { final int sleepTime = httpRequest.getIntHeader(headerName); try { Thread.sleep(sleepTime == -1 ? 40 : sleepTime * 1000); } catch (InterruptedException ex) { // } } if (headerName.startsWith("X-redirect")) { httpResponse.sendRedirect(httpRequest.getHeader("X-redirect")); return; } httpResponse.addHeader("X-" + headerName, httpRequest.getHeader(headerName)); } String pathInfo = httpRequest.getPathInfo(); if (pathInfo != null) httpResponse.addHeader("X-pathInfo", pathInfo); String queryString = httpRequest.getQueryString(); if (queryString != null) httpResponse.addHeader("X-queryString", queryString); httpResponse.addHeader("X-KEEP-ALIVE", httpRequest.getRemoteAddr() + ":" + httpRequest.getRemotePort()); Cookie[] cs = httpRequest.getCookies(); if (cs != null) { for (Cookie c : cs) { httpResponse.addCookie(c); } } Enumeration<String> i = httpRequest.getParameterNames(); if (i.hasMoreElements()) { StringBuilder requestBody = new StringBuilder(); while (i.hasMoreElements()) { headerName = i.nextElement(); httpResponse.addHeader("X-" + headerName, httpRequest.getParameter(headerName)); requestBody.append(headerName); requestBody.append("_"); } if (requestBody.length() > 0) { String body = requestBody.toString(); httpResponse.getOutputStream().write(body.getBytes()); } } String requestBodyLength = httpRequest.getHeader("X-" + CONTENT_LENGTH); if (requestBodyLength != null) { byte[] requestBodyBytes = IOUtils.toByteArray(httpRequest.getInputStream()); int total = requestBodyBytes.length; httpResponse.addIntHeader("X-" + CONTENT_LENGTH, total); String md5 = TestUtils.md5(requestBodyBytes, 0, total); httpResponse.addHeader(CONTENT_MD5.toString(), md5); httpResponse.getOutputStream().write(requestBodyBytes, 0, total); } else { int size = 16384; if (httpRequest.getContentLength() > 0) { size = httpRequest.getContentLength(); } if (size > 0) { int read = 0; while (read > -1) { byte[] bytes = new byte[size]; read = httpRequest.getInputStream().read(bytes); if (read > 0) { httpResponse.getOutputStream().write(bytes, 0, read); } } } } request.setHandled(true); httpResponse.getOutputStream().flush(); // FIXME don't always close, depends on the test, cf ReactiveStreamsTest httpResponse.getOutputStream().close(); } }