383 lines
12 KiB
Java
383 lines
12 KiB
Java
/*
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* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import com.sun.net.httpserver.HttpServer;
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import javax.net.ServerSocketFactory;
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import javax.net.ssl.SSLServerSocket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.ServerSocket;
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import java.net.Socket;
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import java.nio.charset.StandardCharsets;
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import java.util.Collections;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Iterator;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import static java.nio.charset.StandardCharsets.ISO_8859_1;
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/**
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* A cut-down Http/1 Server for testing various error situations
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*
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* use interrupt() to halt
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*/
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public class MockServer extends Thread implements Closeable {
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final ServerSocket ss;
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private final List<Connection> sockets;
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private final List<Connection> removals;
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private final List<Connection> additions;
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AtomicInteger counter = new AtomicInteger(0);
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// if specified (not null), only requests which
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// contain this value in their status line
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// will be taken into account and returned by activity().
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// Other requests will get summarily closed.
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// When specified, this can prevent answering to rogue
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// (external) clients that might be lurking
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// on the test machine instead of answering
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// to the test client.
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final String root;
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// waits up to 2000 seconds for something to happen
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// dont use this unless certain activity coming.
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public Connection activity() {
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for (int i = 0; i < 80 * 100; i++) {
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doRemovalsAndAdditions();
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for (Connection c : sockets) {
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if (c.poll()) {
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if (root != null) {
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// if a root was specified in MockServer
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// constructor, rejects (by closing) all
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// requests whose statusLine does not contain
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// root.
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if (!c.statusLine.contains(root)) {
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System.out.println("Bad statusLine: "
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+ c.statusLine
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+ " closing connection");
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c.close();
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continue;
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}
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}
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return c;
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}
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}
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try {
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Thread.sleep(250);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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return null;
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}
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private void doRemovalsAndAdditions() {
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synchronized (removals) {
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Iterator<Connection> i = removals.iterator();
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while (i.hasNext()) {
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Connection c = i.next();
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System.out.println("socket removed: " + c);
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sockets.remove(c);
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}
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removals.clear();
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}
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synchronized (additions) {
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Iterator<Connection> i = additions.iterator();
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while (i.hasNext()) {
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Connection c = i.next();
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System.out.println("socket added: " + c);
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sockets.add(c);
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}
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additions.clear();
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}
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}
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// clears all current connections on Server.
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public void reset() {
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for (Connection c : sockets) {
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c.close();
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}
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}
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/**
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* Reads data into an ArrayBlockingQueue<String> where each String
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* is a line of input, that was terminated by CRLF (not included)
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*/
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class Connection extends Thread {
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Connection(Socket s) throws IOException {
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this.socket = s;
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id = counter.incrementAndGet();
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is = s.getInputStream();
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os = s.getOutputStream();
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incoming = new ArrayBlockingQueue<>(100);
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setName("Server-Connection");
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setDaemon(true);
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}
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final Socket socket;
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final int id;
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final InputStream is;
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final OutputStream os;
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final ArrayBlockingQueue<String> incoming;
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volatile String statusLine;
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final static String CRLF = "\r\n";
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// sentinel indicating connection closed
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final static String CLOSED = "C.L.O.S.E.D";
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volatile boolean closed = false;
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volatile boolean released = false;
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@Override
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public void run() {
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byte[] buf = new byte[256];
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String s = "";
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try {
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while (true) {
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int n = is.read(buf);
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if (n == -1) {
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cleanup();
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return;
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}
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String s0 = new String(buf, 0, n, ISO_8859_1);
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s = s + s0;
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int i;
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while ((i=s.indexOf(CRLF)) != -1) {
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String s1 = s.substring(0, i+2);
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System.out.println("Server got: " + s1.substring(0,i));
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if (statusLine == null) statusLine = s1.substring(0,i);
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incoming.put(s1);
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if (i+2 == s.length()) {
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s = "";
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break;
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}
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s = s.substring(i+2);
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}
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}
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} catch (IOException |InterruptedException e1) {
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cleanup();
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} catch (Throwable t) {
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System.out.println("Exception: " + t);
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t.printStackTrace();
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cleanup();
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}
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}
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@Override
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public String toString() {
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return "Server.Connection: " + socket.toString();
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}
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public void sendHttpResponse(int code, String body, String... headers)
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throws IOException
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{
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String r1 = "HTTP/1.1 " + Integer.toString(code) + " status" + CRLF;
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for (int i=0; i<headers.length; i+=2) {
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r1 += headers[i] + ": " + headers[i+1] + CRLF;
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}
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int clen = body == null ? 0 : body.getBytes(ISO_8859_1).length;
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r1 += "Content-Length: " + Integer.toString(clen) + CRLF;
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r1 += CRLF;
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if (body != null) {
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r1 += body;
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}
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send(r1);
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}
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// content-length is 10 bytes too many
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public void sendIncompleteHttpResponseBody(int code) throws IOException {
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String body = "Hello World Helloworld Goodbye World";
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String r1 = "HTTP/1.1 " + Integer.toString(code) + " status" + CRLF;
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int clen = body.getBytes(ISO_8859_1).length + 10;
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r1 += "Content-Length: " + Integer.toString(clen) + CRLF;
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r1 += CRLF;
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if (body != null) {
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r1 += body;
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}
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send(r1);
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}
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public void sendIncompleteHttpResponseHeaders(int code)
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throws IOException
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{
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String r1 = "HTTP/1.1 " + Integer.toString(code) + " status" + CRLF;
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send(r1);
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}
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public void send(String r) throws IOException {
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try {
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os.write(r.getBytes(ISO_8859_1));
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} catch (IOException x) {
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IOException suppressed =
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new IOException("MockServer["
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+ ss.getLocalPort()
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+"] Failed while writing bytes: "
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+ x.getMessage());
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x.addSuppressed(suppressed);
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System.err.println("WARNING: " + suppressed);
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throw x;
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}
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}
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public synchronized void close() {
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cleanup();
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closed = true;
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incoming.clear();
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}
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public String nextInput(long timeout, TimeUnit unit) {
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String result = "";
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while (poll()) {
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try {
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String s = incoming.poll(timeout, unit);
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if (s == null && closed) {
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return CLOSED;
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} else {
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result += s;
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}
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} catch (InterruptedException e) {
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return null;
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}
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}
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return result;
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}
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public String nextInput() {
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return nextInput(0, TimeUnit.SECONDS);
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}
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public boolean poll() {
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return incoming.peek() != null;
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}
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private void cleanup() {
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if (released) return;
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synchronized(this) {
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if (released) return;
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released = true;
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}
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try {
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socket.close();
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} catch (Throwable e) {}
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synchronized (removals) {
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removals.add(this);
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}
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}
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}
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MockServer(int port, ServerSocketFactory factory, String root) throws IOException {
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ss = factory.createServerSocket();
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ss.setReuseAddress(false);
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ss.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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this.root = root; // if specified, any request which don't have this value
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// in their statusLine will be rejected.
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sockets = Collections.synchronizedList(new LinkedList<>());
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removals = new LinkedList<>();
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additions = new LinkedList<>();
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setName("Test-Server");
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setDaemon(true);
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}
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MockServer(int port, ServerSocketFactory factory) throws IOException {
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this(port, factory, "/foo/");
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}
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MockServer(int port) throws IOException {
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this(port, ServerSocketFactory.getDefault());
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}
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MockServer() throws IOException {
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this(0);
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}
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int port() {
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return ss.getLocalPort();
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}
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String serverAuthority() {
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return InetAddress.getLoopbackAddress().getHostName() + ":" + port();
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}
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public String getURL() {
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if (ss instanceof SSLServerSocket) {
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return "https://" + serverAuthority() + "/foo/";
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} else {
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return "http://" + serverAuthority() + "/foo/";
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}
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}
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private volatile boolean closed;
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@Override
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public void close() {
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closed = true;
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try {
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ss.close();
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} catch (Throwable e) {
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e.printStackTrace();
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}
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for (Connection c : sockets) {
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c.close();
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}
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}
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@Override
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public void run() {
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try {
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while (!closed) {
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try {
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System.out.println("Server waiting for connection");
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Socket s = ss.accept();
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Connection c = new Connection(s);
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c.start();
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System.out.println("Server got new connection: " + c);
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synchronized (additions) {
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additions.add(c);
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}
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} catch (IOException e) {
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if (closed)
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return;
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e.printStackTrace(System.out);
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}
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}
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} catch (Throwable t) {
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System.out.println("Unexpected exception in accept loop: " + t);
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t.printStackTrace(System.out);
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} finally {
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if (closed) {
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System.out.println("Server closed: exiting accept loop");
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} else {
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System.out.println("Server not closed: exiting accept loop and closing");
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close();
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}
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}
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}
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}
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