JMeter example source code file (TestHTTPMirrorThread.java)

This example JMeter source code file (TestHTTPMirrorThread.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - JMeter tags/keywords

bytearrayoutputstream, bytearrayoutputstream, content-length, content-type, exception, exception, get, host, http, http_server_port, http_server_port, httpmirrorserver, io, net, network, socket, socket

The JMeter TestHTTPMirrorThread.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.jmeter.protocol.http.control;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
/*
import org.apache.jmeter.engine.util.ValueReplacer;
import org.apache.jmeter.protocol.http.control.HttpMirrorControl;
import org.apache.jmeter.protocol.http.sampler.HTTPSampler2;
import org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase;
import org.apache.jmeter.protocol.http.util.EncoderCache;
import org.apache.jmeter.protocol.http.util.HTTPArgument;
import org.apache.jmeter.testelement.TestPlan;
import org.apache.jmeter.threads.JMeterContextService;
import org.apache.jmeter.threads.JMeterVariables;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.PatternMatcherInput;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;
*/
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import junit.extensions.TestSetup;

/**
 * Class for testing the HTTPMirrorThread, which is handling the
 * incoming requests for the HTTPMirrorServer
 */
public class TestHTTPMirrorThread extends TestCase {
    /** The encodings used for http headers and control information */
    private final static String ISO_8859_1 = "ISO-8859-1"; // $NON-NLS-1$
    private final static String UTF_8 = "UTF-8"; // $NON-NLS-1$

    private static final byte[] CRLF = { 0x0d, 0x0a };
    private final static int HTTP_SERVER_PORT = 8181;

    public TestHTTPMirrorThread(String arg0) {
        super(arg0);
    }
    
    public static Test suite(){
        TestSetup setup = new TestSetup(new TestSuite(TestHTTPMirrorThread.class)){         
            private HttpMirrorServer httpServer;
            
            @Override
            protected void setUp() throws Exception {
                httpServer = startHttpMirror(HTTP_SERVER_PORT);
            }
            
            @Override
            protected void tearDown() throws Exception {
                // Shutdown the http server
                httpServer.stopServer();
                httpServer = null;
            }
        };
        return setup;
    }

    /**
     * Utility method to handle starting the HttpMirrorServer for testing.
     * Also used by TestHTTPSamplersAgainstHttpMirrorServer
     */
    public static HttpMirrorServer startHttpMirror(int port) throws Exception {
        HttpMirrorServer server = null;
        server = new HttpMirrorServer(port);
        server.start();
        Exception e = null;
        for (int i=0; i < 10; i++) {// Wait up to 1 second
            try {
                Thread.sleep(100);
            } catch (InterruptedException ignored) {
            }
            e = server.getException();
            if (e != null) {// Already failed
                throw new Exception("Could not start mirror server on port: "+port+". "+e);
            }
            if (server.isAlive()) {
                break; // succeeded
            }
        }
        
        if (!server.isAlive()){
            throw new Exception("Could not start mirror server on port: "+port);
        }
        return server;
    }

    public void testGetRequest() throws Exception {        
        // Connect to the http server, and do a simple http get
        Socket clientSocket = new Socket("localhost", HTTP_SERVER_PORT);
        OutputStream outputStream = clientSocket.getOutputStream();
        InputStream inputStream = clientSocket.getInputStream();
        
        // Write to the socket
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        // Headers
        bos.write("GET / HTTP 1.1".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write("Host: localhost".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(CRLF);
        bos.close();
        outputStream.write(bos.toByteArray());
        
        // Read the response
        ByteArrayOutputStream response = new ByteArrayOutputStream();        
        byte[] buffer = new byte[1024];
        int length = 0;
        while(( length = inputStream.read(buffer)) != -1) {
            response.write(buffer, 0, length);
        }
        response.close();
        byte[] mirroredResponse = getMirroredResponse(response.toByteArray());          
        // Check that the request and response matches
        checkArraysHaveSameContent(bos.toByteArray(), mirroredResponse);
        // Close the connection
        clientSocket.close();

        // Connect to the http server, and do a simple http get, with
        // a pause in the middle of transmitting the header
        clientSocket = new Socket("localhost", HTTP_SERVER_PORT);
        outputStream = clientSocket.getOutputStream();
        inputStream = clientSocket.getInputStream();
        
        // Write to the socket
        bos = new ByteArrayOutputStream();
        // Headers
        bos.write("GET / HTTP 1.1".getBytes(ISO_8859_1));
        bos.write(CRLF);
        // Write the start of the headers, and then sleep, so that the mirror
        // thread will have to block to wait for more data to appear
        bos.close();
        byte[] firstChunk = bos.toByteArray(); 
        outputStream.write(firstChunk);
        Thread.sleep(300);
        // Write the rest of the headers
        bos = new ByteArrayOutputStream();
        bos.write("Host: localhost".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(CRLF);
        bos.close();
        byte[] secondChunk = bos.toByteArray(); 
        outputStream.write(secondChunk);
        // Read the response
        response = new ByteArrayOutputStream();        
        buffer = new byte[1024];
        length = 0;
        while((length = inputStream.read(buffer)) != -1) {
            response.write(buffer, 0, length);
        }
        response.close();
        mirroredResponse = getMirroredResponse(response.toByteArray());
        // The content sent
        bos = new ByteArrayOutputStream();
        bos.write(firstChunk);
        bos.write(secondChunk);
        bos.close();        
        // Check that the request and response matches
        checkArraysHaveSameContent(bos.toByteArray(), mirroredResponse);
        // Close the connection
        clientSocket.close();        
    }

    public void testPostRequest() throws Exception {
        // Connect to the http server, and do a simple http post
        Socket clientSocket = new Socket("localhost", HTTP_SERVER_PORT);
        OutputStream outputStream = clientSocket.getOutputStream();
        InputStream inputStream = clientSocket.getInputStream();
        // Construct body
        StringBuilder postBodyBuffer = new StringBuilder();
        for(int i = 0; i < 1000; i++) {
            postBodyBuffer.append("abc");
        }
        byte[] postBody = postBodyBuffer.toString().getBytes(ISO_8859_1);
        
        // Write to the socket
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        // Headers
        bos.write("GET / HTTP 1.1".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write("Host: localhost".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-type: text/plain; charset=" + ISO_8859_1).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-length: " + postBody.length).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(CRLF);
        bos.write(postBody);
        bos.close();
        // Write the headers and body
        outputStream.write(bos.toByteArray());
        // Read the response
        ByteArrayOutputStream response = new ByteArrayOutputStream();        
        byte[] buffer = new byte[1024];
        int length = 0;
        while((length = inputStream.read(buffer)) != -1) {
            response.write(buffer, 0, length);
        }
        response.close();
        byte[] mirroredResponse = getMirroredResponse(response.toByteArray());          
        // Check that the request and response matches
        checkArraysHaveSameContent(bos.toByteArray(), mirroredResponse);
        // Close the connection
        clientSocket.close();

        // Connect to the http server, and do a simple http post, with
        // a pause after transmitting the headers
        clientSocket = new Socket("localhost", HTTP_SERVER_PORT);
        outputStream = clientSocket.getOutputStream();
        inputStream = clientSocket.getInputStream();
        
        // Write to the socket
        bos = new ByteArrayOutputStream();
        // Headers
        bos.write("GET / HTTP 1.1".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write("Host: localhost".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-type: text/plain; charset=" + ISO_8859_1).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-length: " + postBody.length).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(CRLF);
        bos.close();
        // Write the headers, and then sleep
        bos.close();
        byte[] firstChunk = bos.toByteArray(); 
        outputStream.write(firstChunk);
        Thread.sleep(300);
        
        // Write the body
        byte[] secondChunk = postBody;         
        outputStream.write(secondChunk);
        // Read the response
        response = new ByteArrayOutputStream();        
        buffer = new byte[1024];
        length = 0;
        while((length = inputStream.read(buffer)) != -1) {
            response.write(buffer, 0, length);
        }
        response.close();
        mirroredResponse = getMirroredResponse(response.toByteArray());
        // The content sent
        bos = new ByteArrayOutputStream();
        bos.write(firstChunk);
        bos.write(secondChunk);
        bos.close();        
        // Check that the request and response matches
        checkArraysHaveSameContent(bos.toByteArray(), mirroredResponse);
        // Close the connection
        clientSocket.close();
        
        // Connect to the http server, and do a simple http post with utf-8
        // encoding of the body, which caused problems when reader/writer
        // classes were used in the HttpMirrorThread
        clientSocket = new Socket("localhost", HTTP_SERVER_PORT);
        outputStream = clientSocket.getOutputStream();
        inputStream = clientSocket.getInputStream();
        // Construct body
        postBodyBuffer = new StringBuilder();
        for(int i = 0; i < 1000; i++) {
            postBodyBuffer.append("\u0364\u00c5\u2052");
        }
        postBody = postBodyBuffer.toString().getBytes(UTF_8);
        
        // Write to the socket
        bos = new ByteArrayOutputStream();
        // Headers
        bos.write("GET / HTTP 1.1".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write("Host: localhost".getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-type: text/plain; charset=" + UTF_8).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(("Content-length: " + postBody.length).getBytes(ISO_8859_1));
        bos.write(CRLF);
        bos.write(CRLF);
        bos.close();
        // Write the headers, and then sleep
        bos.close();
        firstChunk = bos.toByteArray(); 
        outputStream.write(firstChunk);
        Thread.sleep(300);
        
        // Write the body
        secondChunk = postBody;         
        outputStream.write(secondChunk);
        // Read the response
        response = new ByteArrayOutputStream();        
        buffer = new byte[1024];
        length = 0;
        while((length = inputStream.read(buffer)) != -1) {
            response.write(buffer, 0, length);
        }
        response.close();
        mirroredResponse = getMirroredResponse(response.toByteArray());
        // The content sent
        bos = new ByteArrayOutputStream();
        bos.write(firstChunk);
        bos.write(secondChunk);
        bos.close();
        // Check that the request and response matches       
        checkArraysHaveSameContent(bos.toByteArray(), mirroredResponse);
        // Close the connection
        clientSocket.close();
    }
/*
    public void testPostRequestChunked() throws Exception {
        // TODO - implement testing of chunked post request
    }
*/    

    /**
     * Check that the the two byte arrays have identical content
     * 
     * @param expected
     * @param actual
     * @throws UnsupportedEncodingException 
     */
    private void checkArraysHaveSameContent(byte[] expected, byte[] actual) throws UnsupportedEncodingException {
        if(expected != null && actual != null) {
            if(expected.length != actual.length) {
                System.out.println(">>>>>>>>>>>>>>>>>>>> (expected) : length " + expected.length);
                System.out.println(new String(expected,"UTF-8"));
                System.out.println("==================== (actual) : length " + actual.length);
                System.out.println(new String(actual,"UTF-8"));
                System.out.println("<<<<<<<<<<<<<<<<<<<<");
                fail("arrays have different length, expected is " + expected.length + ", actual is " + actual.length);
            }
            else {
                for(int i = 0; i < expected.length; i++) {
                    if(expected[i] != actual[i]) {
                        System.out.println(">>>>>>>>>>>>>>>>>>>> (expected) : length " + expected.length);
                        System.out.println(new String(expected,0,i+1));
                        System.out.println("==================== (actual) : length " + actual.length);
                        System.out.println(new String(actual,0,i+1));
                        System.out.println("<<<<<<<<<<<<<<<<<<<<");
/*
                        // Useful to when debugging
                        for(int j = 0; j  < expected.length; j++) {
                            System.out.print(expected[j] + " ");
                        }
                        System.out.println();
                        for(int j = 0; j  < actual.length; j++) {
                            System.out.print(actual[j] + " ");
                        }
                        System.out.println();
*/                      
                        fail("byte at position " + i + " is different, expected is " + expected[i] + ", actual is " + actual[i]);
                    }
                }
            }
        }
        else {
            fail("expected or actual byte arrays were null");
        }
    }
    
    private byte[] getMirroredResponse(byte[] allResponse) {
        // The response includes the headers from the mirror server,
        // we want to skip those, to only keep the content mirrored.
        // Look for the first CRLFCRLF section
        int startOfMirrorResponse = 0;
        for(int i = 0; i < allResponse.length; i++) {
            // TODO : This is a bit fragile
            if(allResponse[i] == 0x0d && allResponse[i+1] == 0x0a && allResponse[i+2] == 0x0d && allResponse[i+3] == 0x0a) {
                startOfMirrorResponse = i + 4;
                break;
            }
        }
        byte[] mirrorResponse = new byte[allResponse.length - startOfMirrorResponse]; 
        System.arraycopy(allResponse, startOfMirrorResponse, mirrorResponse, 0, mirrorResponse.length);
        return mirrorResponse;      
    }
}