/*

 * 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);

        }

    }

}