JMeter example source code file (LoopbackHTTPSocket.java)

This example JMeter source code file (LoopbackHTTPSocket.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

bytearrayinputstream, inetaddress, inputstream, io, ioexception, ioexception, loopbackhttpsocket, loopbackhttpsocket, loopbackinputstream, loopbackoutputstream, loopbackoutputstream, net, network, ok\r\ncontent-type, override, override, unknownhostexception

The JMeter LoopbackHTTPSocket.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.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

/*
 * Socket that reads back from the output
 */
public class LoopbackHTTPSocket extends Socket {

    // get access to buffer
    static class LoopbackOutputStream extends ByteArrayOutputStream{
        byte [] getBuffer() {
            return buf;
        }
    }

    // wrap read() methods to track output buffer
    static class LoopBackInputStream extends ByteArrayInputStream{
        private LoopbackOutputStream os;
        @Override
        public synchronized int read() {
            buf=os.getBuffer();   // make sure buffer details
            count=buf.length; // track the output
            return super.read();
        }
        @Override
        public synchronized int read(byte[] b, int off, int len) {
            buf=os.getBuffer();
            count=buf.length;
            return super.read(b, off, len);
        }

        public LoopBackInputStream(LoopbackOutputStream _os) {
            super(_os.getBuffer());
            os=_os;
        }
    }

    private final LoopbackOutputStream os;

    private LoopbackHTTPSocket() throws IOException{
        os=new LoopbackOutputStream();
        // Preload the output so that can be read back as HTTP
        os.write("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n".getBytes());
    }

    public LoopbackHTTPSocket(String host, int port, InetAddress localAddress, int localPort, int timeout) throws IOException {
        this();
    }

    public LoopbackHTTPSocket(String host, int port, InetAddress localAddr, int localPort) throws IOException {
        this();
    }

    public LoopbackHTTPSocket(String host, int port) throws UnknownHostException, IOException {
        this();
    }

    // Override so we can intercept the stream
    @Override
    public OutputStream getOutputStream() throws IOException {
        return os;
    }

    // Override so we can intercept the stream
    @Override
    public InputStream getInputStream() throws IOException {
        return new LoopBackInputStream(os);
    }
}