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Java example source code file (Test.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

exception, expected, headers, helloworld1234567890abcdefghijklmnopqrstuvwxyz, httpurlconnection, inputstream, ioexception, iso8859\-1, net, network, outputstream, post, string, test, url, wrong

The Test.java Java example source code

/*
 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 5026745 6631048
 * @run main/othervm/timeout=500 Test
 * @summary Cannot flush output stream when writing to an HttpUrlConnection
 */

import java.io.*;
import java.net.*;
import com.sun.net.httpserver.*;

public class Test implements HttpHandler {

    static volatile int count = 0;

    static final String str1 = "Helloworld1234567890abcdefghijklmnopqrstuvwxyz"+
                                "1234567890abcdefkjsdlkjflkjsldkfjlsdkjflkj"+
                                "1434567890abcdefkjsdlkjflkjsldkfjlsdkjflkj";

    static final String str2 = "Helloworld1234567890abcdefghijklmnopqrstuvwxyz"+
                                "1234567890";

    public void handle(HttpExchange exchange) {
        String reqbody;
        try {
            switch (exchange.getRequestURI().toString()) {
            case "/test/test1": /* test1 -- keeps conn alive */
            case "/test/test2": /* test2 -- closes conn */
                printRequestURI(exchange);
                reqbody = read(exchange.getRequestBody());
                if (!reqbody.equals(str1)) {
                    exchange.sendResponseHeaders(500, 0);
                    break;
                }

                Headers headers = exchange.getRequestHeaders();
                String chunk =  headers.getFirst("Transfer-encoding");

                if (!"chunked".equals (chunk)) {
                    exchange.sendResponseHeaders(501, 0);
                    break;
                }

                exchange.sendResponseHeaders(200, reqbody.length());
                write(exchange.getResponseBody(), reqbody);

                if (count == 1) {
                    Headers resHeaders = exchange.getResponseHeaders() ;
                    resHeaders.set("Connection", "close");
                }
                break;
            case "/test/test3": /* test 3 */
                printRequestURI(exchange);
                reqbody = read(exchange.getRequestBody());

                if (!reqbody.equals(str2)) {
                    exchange.sendResponseHeaders(500, 0);
                    break;
                }
                headers = exchange.getRequestHeaders();
                int clen = Integer.parseInt( headers.getFirst("Content-length"));

                if (clen != str2.length()) {
                    exchange.sendResponseHeaders(501, 0);
                    break;
                }
                Headers resHeaders = exchange.getResponseHeaders() ;
                resHeaders.set("Connection", "close");

                exchange.sendResponseHeaders(200, reqbody.length());
                write(exchange.getResponseBody(), reqbody);
                break;
            case "/test/test4": /* test 4 */
            case "/test/test5": /* test 5 */
                printRequestURI(exchange);
                break;
            case "/test/test6": /* test 6 */
                printRequestURI(exchange);
                resHeaders = exchange.getResponseHeaders() ;
                resHeaders.set("Location", "http://foo.bar/");
                resHeaders.set("Connection", "close");
                exchange.sendResponseHeaders(307, 0);
                break;
            case "/test/test7": /* test 7 */
            case "/test/test8": /* test 8 */
                printRequestURI(exchange);
                reqbody = read(exchange.getRequestBody());
                if (reqbody != null && !"".equals(reqbody)) {
                    exchange.sendResponseHeaders(501, 0);
                    break;
                }
                resHeaders = exchange.getResponseHeaders() ;
                resHeaders.set("Connection", "close");
                exchange.sendResponseHeaders(200, 0);
                break;
            case "/test/test9": /* test 9 */
                printRequestURI(exchange);
                reqbody = read(exchange.getRequestBody());
                if (!reqbody.equals(str1)) {
                    exchange.sendResponseHeaders(500, 0);
                    break;
                }

                headers = exchange.getRequestHeaders();
                chunk =  headers.getFirst("Transfer-encoding");
                if (!"chunked".equals(chunk)) {
                    exchange.sendResponseHeaders(501, 0);
                    break;
                }

                exchange.sendResponseHeaders(200, reqbody.length());
                write(exchange.getResponseBody(), reqbody);
                break;
            case "/test/test10": /* test10 */
                printRequestURI(exchange);
                InputStream is = exchange.getRequestBody();
                String s = read (is, str1.length());

                boolean error = false;
                for (int i=10; i< 200 * 1024; i++) {
                    byte c = (byte)is.read();

                    if (c != (byte)i) {
                        error = true;
                        System.out.println ("error at position " + i);
                    }
                }
                if (!s.equals(str1) ) {
                    System.out.println ("received string : " + s);
                    exchange.sendResponseHeaders(500, 0);
                } else if (error) {
                    System.out.println ("error");
                    exchange.sendResponseHeaders(500, 0);
                } else {
                    exchange.sendResponseHeaders(200, 0);
                }
                break;
            case "/test/test11": /* test11 */
                printRequestURI(exchange);
                is = exchange.getRequestBody();
                s = read (is, str1.length());

                error = false;
                for (int i=10; i< 30 * 1024; i++) {
                    byte c = (byte)is.read();

                    if (c != (byte)i) {
                        error = true;
                        System.out.println ("error at position " + i);
                    }
                }
                if (!s.equals(str1) ) {
                    System.out.println ("received string : " + s);
                    exchange.sendResponseHeaders(500, 0);
                } else if (error) {
                    System.out.println ("error");
                    exchange.sendResponseHeaders(500, 0);
                } else {
                    exchange.sendResponseHeaders(200, 0);
                }
                break;
            case "/test/test12": /* test12 */
                printRequestURI(exchange);
                is = exchange.getRequestBody();

                error = false;
                for (int i=10; i< 30 * 1024; i++) {
                    byte c = (byte)is.read();

                    if (c != (byte)i) {
                        error = true;
                        System.out.println ("error at position " + i);
                    }
                }
                if (error) {
                    System.out.println ("error");
                    exchange.sendResponseHeaders(500, 0);
                } else {
                    exchange.sendResponseHeaders(200, 0);
                }
                break;
            }
            count ++;
            exchange.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    static void printRequestURI(HttpExchange exchange) {
        URI uri = exchange.getRequestURI();
        System.out.println("HttpServer: handle " + uri);
    }


    static String read (InputStream is, int len) {
        try {
            byte[] ba = new byte [len];
            int c;
            int l = 0;
            while ((c= is.read(ba, l, ba.length-l)) != -1 && l<len)  {
                l += c;
            }
            return new String (ba, 0, l, "ISO8859-1");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    static String read(InputStream is) {
        try {
            byte[] ba = new byte [8096];
            int off = 0, c;
            while ((c= is.read(ba, off, ba.length)) != -1)  {
                off += c;
            }
            return new String(ba, 0, off, "ISO8859-1");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    static void write(OutputStream os, String str) {
        try {
            byte[] ba = str.getBytes("ISO8859-1");
            os.write(ba);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    static void readAndCompare(InputStream is, String cmp) throws IOException {
        int c;
        byte buf[] = new byte [1024];
        int off = 0;
        int len = 1024;
        while ((c=is.read(buf, off, len)) != -1) {
            off += c;
            len -= c;
        }
        String s1 = new String(buf, 0, off, "ISO8859_1");
        if (!cmp.equals(s1)) {
            throw new IOException("strings not same");
        }
    }

    /* basic chunked test (runs twice) */

    static void test1 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (20);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.write (str1.getBytes());
        os.close();
        InputStream is = urlc.getInputStream();
        readAndCompare (is, str1);
        is.close();
    }

    /* basic fixed length test */

    static void test3 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setFixedLengthStreamingMode (str2.length());
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.write (str2.getBytes());
        os.close();
        InputStream is = urlc.getInputStream();
        readAndCompare (is, str2);
        is.close();
    }

    /* write too few bytes */

    static void test4 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setFixedLengthStreamingMode (str2.length()+1);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.write (str2.getBytes());
        try {
            os.close();
            throw new Exception ("should have thrown IOException");
        } catch (IOException e) {}
    }

    /* write too many bytes */

    static void test5 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setFixedLengthStreamingMode (str2.length()-1);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        try {
            os.write (str2.getBytes());
            throw new Exception ("should have thrown IOException");
        } catch (IOException e) {}
    }

    /* check for HttpRetryException on redirection */

    static void test6 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (20);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.write (str1.getBytes());
        os.close();
        try {
            InputStream is = urlc.getInputStream();
            throw new Exception ("should have gotten HttpRetryException");
        } catch (HttpRetryException e) {
            if (e.responseCode() != 307) {
                throw new Exception ("Wrong response code " + e.responseCode());
            }
            if (!e.getLocation().equals ("http://foo.bar/")) {
                throw new Exception ("Wrong location " + e.getLocation());
            }
        }
    }

    /* next two tests send zero length posts */

    static void test7 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (20);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.close();
        int ret = urlc.getResponseCode();
        if (ret != 200) {
            throw new Exception ("Expected 200: got " + ret);
        }
    }

    static void test8 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setFixedLengthStreamingMode (0);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.close();
        int ret = urlc.getResponseCode();
        if (ret != 200) {
            throw new Exception ("Expected 200: got " + ret);
        }
    }

    /* calling setChunkedStreamingMode with -1 should entail using
       the default chunk size */
   static void test9 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (-1);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        os.write (str1.getBytes());
        os.close();
        InputStream is = urlc.getInputStream();
        readAndCompare (is, str1);
        is.close();
    }

   static void test10 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (4 * 1024);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        byte[] buf = new byte [200 * 1024];
        for (int i=0; i< 200 * 1024; i++) {
            buf[i] = (byte) i;
        }
        /* write a small bit first, and then the large buffer */
        os.write (str1.getBytes());
        os.write (buf, 10, buf.length - 10); /* skip 10 bytes to test offset */
        os.close();
        InputStream is = urlc.getInputStream();
        is.close();
        int ret = urlc.getResponseCode();
        if (ret != 200) {
            throw new Exception ("Expected 200: got " + ret);
        }
    }

    static void test11 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (36 * 1024);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        byte[] buf = new byte [30 * 1024];
        for (int i=0; i< 30 * 1024; i++) {
            buf[i] = (byte) i;
        }
        /* write a small bit first, and then the large buffer */
        os.write (str1.getBytes());
        //os.write (buf, 10, buf.length - 10); /* skip 10 bytes to test offset */
        os.write (buf, 10, (10 * 1024) - 10);
        os.write (buf, (10 * 1024), (10 * 1024));
        os.write (buf, (20 * 1024), (10 * 1024));
        os.close();
        InputStream is = urlc.getInputStream();
        is.close();
        int ret = urlc.getResponseCode();
        if (ret != 200) {
            throw new Exception ("Expected 200: got " + ret);
        }
    }

    static void test12 (String u) throws Exception {
        URL url = new URL (u);
        System.out.println ("client opening connection to: " + u);
        HttpURLConnection urlc = (HttpURLConnection)url.openConnection ();
        urlc.setChunkedStreamingMode (36 * 1024);
        urlc.setDoOutput(true);
        urlc.setRequestMethod ("POST");
        OutputStream os = urlc.getOutputStream ();
        byte[] buf = new byte [30 * 1024];
        for (int i=0; i< 30 * 1024; i++) {
            buf[i] = (byte) i;
        }
        os.write (buf, 10, buf.length - 10); /* skip 10 bytes to test offset */
        os.close();
        InputStream is = urlc.getInputStream();
        is.close();
        int ret = urlc.getResponseCode();
        if (ret != 200) {
            throw new Exception ("Expected 200: got " + ret);
        }
    }


    static com.sun.net.httpserver.HttpServer httpserver;

    public static void main (String[] args) throws Exception {
        try {
            httpserver = com.sun.net.httpserver.HttpServer.create(new InetSocketAddress(0), 0);
            HttpContext ctx = httpserver.createContext("/test/", new Test() );
            httpserver.start();

            int port = httpserver.getAddress().getPort();

            System.out.println ("Server started: listening on port: " + port);
            test1("http://localhost:"+ port + "/test/test1");
            test1("http://localhost:"+ port + "/test/test2");
            test3("http://localhost:"+ port + "/test/test3");
            test4("http://localhost:"+ port + "/test/test4");
            test5("http://localhost:"+ port + "/test/test5");
            test6("http://localhost:"+ port + "/test/test6");
            test7("http://localhost:"+ port + "/test/test7");
            test8("http://localhost:"+ port + "/test/test8");
            test9("http://localhost:"+ port + "/test/test9");
            test10("http://localhost:"+ port + "/test/test10");
            test11("http://localhost:"+ port + "/test/test11");
            test12("http://localhost:"+ port + "/test/test12");
        } finally {
            if (httpserver != null)
                httpserver.stop(0);
        }
    }

}

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