| // |
| // ======================================================================== |
| // Copyright (c) 1995-2016 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.http2.client.http; |
| |
| import java.io.IOException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.jetty.client.api.ContentResponse; |
| import org.eclipse.jetty.http.HttpStatus; |
| import org.eclipse.jetty.http2.server.HTTP2ServerConnectionFactory; |
| import org.eclipse.jetty.server.Handler; |
| import org.eclipse.jetty.server.HttpConfiguration; |
| import org.eclipse.jetty.server.Request; |
| import org.eclipse.jetty.server.handler.AbstractHandler; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class MaxConcurrentStreamsTest extends AbstractTest |
| { |
| private void start(int maxConcurrentStreams, Handler handler) throws Exception |
| { |
| HTTP2ServerConnectionFactory http2 = new HTTP2ServerConnectionFactory(new HttpConfiguration()); |
| http2.setMaxConcurrentStreams(maxConcurrentStreams); |
| prepareServer(http2); |
| server.setHandler(handler); |
| server.start(); |
| prepareClient(); |
| client.start(); |
| } |
| |
| @Test |
| public void testOneConcurrentStream() throws Exception |
| { |
| long sleep = 1000; |
| start(1, new AbstractHandler() |
| { |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException |
| { |
| baseRequest.setHandled(true); |
| // Sleep a bit to allow the second request to be queued. |
| sleep(sleep); |
| } |
| }); |
| client.setMaxConnectionsPerDestination(1); |
| |
| // Prime the connection so that the maxConcurrentStream setting arrives to the client. |
| client.newRequest("localhost", connector.getLocalPort()).path("/prime").send(); |
| |
| CountDownLatch latch = new CountDownLatch(2); |
| |
| // First request is sent immediately. |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path("/first") |
| .send(result -> |
| { |
| if (result.isSucceeded()) |
| latch.countDown(); |
| }); |
| |
| // Second request is queued. |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path("/second") |
| .send(result -> |
| { |
| if (result.isSucceeded()) |
| latch.countDown(); |
| }); |
| |
| // When the first request returns, the second must be sent. |
| Assert.assertTrue(latch.await(5 * sleep, TimeUnit.MILLISECONDS)); |
| } |
| |
| @Test |
| public void testTwoConcurrentStreamsThirdWaits() throws Exception |
| { |
| int maxStreams = 2; |
| long sleep = 1000; |
| start(maxStreams, new AbstractHandler() |
| { |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException |
| { |
| baseRequest.setHandled(true); |
| sleep(sleep); |
| } |
| }); |
| client.setMaxConnectionsPerDestination(1); |
| |
| // Prime the connection so that the maxConcurrentStream setting arrives to the client. |
| client.newRequest("localhost", connector.getLocalPort()).path("/prime").send(); |
| |
| // Send requests up to the max allowed. |
| for (int i = 0; i < maxStreams; ++i) |
| { |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path("/" + i) |
| .send(null); |
| } |
| |
| // Send the request in excess. |
| CountDownLatch latch = new CountDownLatch(1); |
| String path = "/excess"; |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path(path) |
| .send(result -> |
| { |
| if (result.getResponse().getStatus() == HttpStatus.OK_200) |
| latch.countDown(); |
| }); |
| |
| // The last exchange should remain in the queue. |
| HttpDestinationOverHTTP2 destination = (HttpDestinationOverHTTP2)client.getDestination("http", "localhost", connector.getLocalPort()); |
| Assert.assertEquals(1, destination.getHttpExchanges().size()); |
| Assert.assertEquals(path, destination.getHttpExchanges().peek().getRequest().getPath()); |
| |
| Assert.assertTrue(latch.await(5 * sleep, TimeUnit.MILLISECONDS)); |
| } |
| |
| @Test |
| public void testAbortedWhileQueued() throws Exception |
| { |
| long sleep = 1000; |
| start(1, new AbstractHandler() |
| { |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException |
| { |
| baseRequest.setHandled(true); |
| sleep(sleep); |
| } |
| }); |
| client.setMaxConnectionsPerDestination(1); |
| |
| // Prime the connection so that the maxConcurrentStream setting arrives to the client. |
| client.newRequest("localhost", connector.getLocalPort()).path("/prime").send(); |
| |
| // Send a request that is aborted while queued. |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path("/aborted") |
| .onRequestQueued(request -> request.abort(new Exception())) |
| .send(null); |
| |
| // Must be able to send another request. |
| ContentResponse response = client.newRequest("localhost", connector.getLocalPort()).path("/check").send(); |
| |
| Assert.assertEquals(HttpStatus.OK_200, response.getStatus()); |
| } |
| |
| @Test |
| public void testMultipleRequestsQueuedOnConnect() throws Exception |
| { |
| int maxConcurrent = 10; |
| long sleep = 500; |
| start(maxConcurrent, new AbstractHandler() |
| { |
| @Override |
| public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException |
| { |
| baseRequest.setHandled(true); |
| sleep(sleep); |
| } |
| }); |
| client.setMaxConnectionsPerDestination(1); |
| |
| // The first request will open the connection, the others will be queued. |
| CountDownLatch latch = new CountDownLatch(maxConcurrent); |
| for (int i = 0; i < maxConcurrent; ++i) |
| { |
| client.newRequest("localhost", connector.getLocalPort()) |
| .path("/" + i) |
| .send(result -> latch.countDown()); |
| } |
| |
| // The requests should be processed in parallel, not sequentially. |
| Assert.assertTrue(latch.await(maxConcurrent * sleep / 2, TimeUnit.MILLISECONDS)); |
| } |
| |
| private void sleep(long time) |
| { |
| try |
| { |
| Thread.sleep(time); |
| } |
| catch (InterruptedException x) |
| { |
| throw new RuntimeException(x); |
| } |
| } |
| } |