| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.servlet; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.net.Socket; |
| import java.nio.charset.StandardCharsets; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import javax.servlet.AsyncContext; |
| import javax.servlet.AsyncEvent; |
| import javax.servlet.AsyncListener; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.jetty.server.Server; |
| import org.eclipse.jetty.server.ServerConnector; |
| import org.eclipse.jetty.toolchain.test.http.SimpleHttpParser; |
| import org.eclipse.jetty.toolchain.test.http.SimpleHttpResponse; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class AsyncContextListenersTest |
| { |
| private Server _server; |
| private ServerConnector _connector; |
| |
| public void prepare(String path, HttpServlet servlet) throws Exception |
| { |
| _server = new Server(); |
| _connector = new ServerConnector(_server); |
| _server.addConnector(_connector); |
| |
| ServletContextHandler context = new ServletContextHandler(_server, "/", false, false); |
| context.addServlet(new ServletHolder(servlet), path); |
| |
| _server.start(); |
| } |
| |
| @After |
| public void dispose() throws Exception |
| { |
| _server.stop(); |
| } |
| |
| @Test |
| public void testListenerClearedOnSecondRequest() throws Exception |
| { |
| final AtomicInteger completes = new AtomicInteger(); |
| String path = "/path"; |
| prepare(path, new HttpServlet() |
| { |
| @Override |
| protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException |
| { |
| AsyncContext asyncContext = request.startAsync(request, response); |
| asyncContext.addListener(new AsyncListener() |
| { |
| @Override |
| public void onStartAsync(AsyncEvent event) throws IOException |
| { |
| } |
| |
| @Override |
| public void onComplete(AsyncEvent event) throws IOException |
| { |
| completes.incrementAndGet(); |
| } |
| |
| @Override |
| public void onTimeout(AsyncEvent event) throws IOException |
| { |
| } |
| |
| @Override |
| public void onError(AsyncEvent event) throws IOException |
| { |
| } |
| }); |
| asyncContext.complete(); |
| } |
| }); |
| |
| try (Socket socket = new Socket("localhost", _connector.getLocalPort())) |
| { |
| OutputStream output = socket.getOutputStream(); |
| |
| String request = "" + |
| "GET " + path + " HTTP/1.1\r\n" + |
| "Host: localhost\r\n" + |
| "\r\n"; |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), StandardCharsets.UTF_8)); |
| SimpleHttpParser parser = new SimpleHttpParser(); |
| SimpleHttpResponse response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| |
| // Send a second request |
| completes.set(0); |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| } |
| } |
| |
| @Test |
| public void testListenerAddedFromListener() throws Exception |
| { |
| final AtomicInteger completes = new AtomicInteger(); |
| String path = "/path"; |
| prepare(path, new HttpServlet() |
| { |
| @Override |
| protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException |
| { |
| AsyncContext asyncContext = request.startAsync(request, response); |
| asyncContext.addListener(new AsyncListener() |
| { |
| @Override |
| public void onStartAsync(AsyncEvent event) throws IOException |
| { |
| // This method should not be invoked because we add the |
| // listener *after* having called startAsync(), but we |
| // add a listener to be sure it's not called (it will |
| // screw up the completes count and test will fail). |
| event.getAsyncContext().addListener(this); |
| } |
| |
| @Override |
| public void onComplete(AsyncEvent event) throws IOException |
| { |
| completes.incrementAndGet(); |
| } |
| |
| @Override |
| public void onTimeout(AsyncEvent event) throws IOException |
| { |
| } |
| |
| @Override |
| public void onError(AsyncEvent event) throws IOException |
| { |
| } |
| }); |
| asyncContext.complete(); |
| } |
| }); |
| |
| try (Socket socket = new Socket("localhost", _connector.getLocalPort())) |
| { |
| OutputStream output = socket.getOutputStream(); |
| |
| String request = "" + |
| "GET " + path + " HTTP/1.1\r\n" + |
| "Host: localhost\r\n" + |
| "\r\n"; |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), StandardCharsets.UTF_8)); |
| SimpleHttpParser parser = new SimpleHttpParser(); |
| SimpleHttpResponse response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| |
| // Send a second request |
| completes.set(0); |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| } |
| } |
| @Test |
| public void testAsyncDispatchAsyncCompletePreservesListener() throws Exception |
| { |
| final AtomicInteger completes = new AtomicInteger(); |
| final String path = "/path"; |
| prepare(path + "/*", new HttpServlet() |
| { |
| @Override |
| protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException |
| { |
| String requestURI = request.getRequestURI(); |
| if (requestURI.endsWith("/one")) |
| { |
| AsyncContext asyncContext = request.startAsync(request, response); |
| asyncContext.addListener(new AsyncListener() |
| { |
| @Override |
| public void onStartAsync(AsyncEvent event) throws IOException |
| { |
| event.getAsyncContext().addListener(this); |
| } |
| |
| @Override |
| public void onComplete(AsyncEvent event) throws IOException |
| { |
| completes.incrementAndGet(); |
| } |
| |
| @Override |
| public void onTimeout(AsyncEvent event) throws IOException |
| { |
| } |
| |
| @Override |
| public void onError(AsyncEvent event) throws IOException |
| { |
| } |
| }); |
| // This dispatch() will call startAsync() again which will |
| // clear the previous listeners (as per the specification) |
| // but add a new listener from onStartAsync(). |
| asyncContext.dispatch(path + "/two"); |
| } |
| else if (requestURI.endsWith("/two")) |
| { |
| AsyncContext asyncContext = request.startAsync(request, response); |
| asyncContext.complete(); |
| } |
| } |
| }); |
| |
| try (Socket socket = new Socket("localhost", _connector.getLocalPort())) |
| { |
| OutputStream output = socket.getOutputStream(); |
| |
| String request = "" + |
| "GET " + path + "/one HTTP/1.1\r\n" + |
| "Host: localhost\r\n" + |
| "\r\n"; |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), StandardCharsets.UTF_8)); |
| SimpleHttpParser parser = new SimpleHttpParser(); |
| SimpleHttpResponse response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| |
| // Send a second request |
| completes.set(0); |
| output.write(request.getBytes(StandardCharsets.UTF_8)); |
| output.flush(); |
| |
| response = parser.readResponse(reader); |
| Assert.assertEquals("200", response.getCode()); |
| Assert.assertEquals(1, completes.get()); |
| } |
| } |
| } |