--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/ProxyServer.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,319 @@
+/*
+ * Copyright (c) 2015, 2016, 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.
+ */
+
+import java.net.*;
+import java.io.*;
+import java.util.*;
+import java.security.*;
+
+/**
+ * A minimal proxy server that supports CONNECT tunneling. It does not do
+ * any header transformations. In future this could be added.
+ * Two threads are created per client connection. So, it's not
+ * intended for large numbers of parallel connections.
+ */
+public class ProxyServer extends Thread implements Closeable {
+
+ ServerSocket listener;
+ int port;
+ volatile boolean debug;
+
+ /**
+ * Create proxy on port (zero means don't care). Call getPort()
+ * to get the assigned port.
+ */
+ public ProxyServer(Integer port) throws IOException {
+ this(port, false);
+ }
+
+ public ProxyServer(Integer port, Boolean debug) throws IOException {
+ this.debug = debug;
+ listener = new ServerSocket(port);
+ this.port = listener.getLocalPort();
+ setName("ProxyListener");
+ setDaemon(true);
+ connections = new LinkedList<>();
+ start();
+ }
+
+ public ProxyServer(String s) { }
+
+ /**
+ * Returns the port number this proxy is listening on
+ */
+ public int getPort() {
+ return port;
+ }
+
+ /**
+ * Shuts down the proxy, probably aborting any connections
+ * currently open
+ */
+ public void close() throws IOException {
+ if (debug) System.out.println("Proxy: closing");
+ done = true;
+ listener.close();
+ for (Connection c : connections) {
+ if (c.running()) {
+ c.close();
+ }
+ }
+ }
+
+ List<Connection> connections;
+
+ volatile boolean done;
+
+ public void run() {
+ if (System.getSecurityManager() == null) {
+ execute();
+ } else {
+ // so calling domain does not need to have socket permission
+ AccessController.doPrivileged(new PrivilegedAction<Void>() {
+ public Void run() {
+ execute();
+ return null;
+ }
+ });
+ }
+ }
+
+ public void execute() {
+ try {
+ while(!done) {
+ Socket s = listener.accept();
+ if (debug)
+ System.out.println("Client: " + s);
+ Connection c = new Connection(s);
+ connections.add(c);
+ }
+ } catch(Throwable e) {
+ if (debug && !done) {
+ System.out.println("Fatal error: Listener: " + e);
+ e.printStackTrace();
+ }
+ }
+ }
+
+ /**
+ * Transparently forward everything, once we know what the destination is
+ */
+ class Connection {
+
+ Socket clientSocket, serverSocket;
+ Thread out, in;
+ volatile InputStream clientIn, serverIn;
+ volatile OutputStream clientOut, serverOut;
+
+ boolean forwarding = false;
+
+ final static int CR = 13;
+ final static int LF = 10;
+
+ Connection(Socket s) throws IOException {
+ this.clientSocket= s;
+ this.clientIn = new BufferedInputStream(s.getInputStream());
+ this.clientOut = s.getOutputStream();
+ init();
+ }
+
+ byte[] readHeaders(InputStream is) throws IOException {
+ byte[] outbuffer = new byte[8000];
+ int crlfcount = 0;
+ int bytecount = 0;
+ int c;
+ while ((c=is.read()) != -1 && bytecount < outbuffer.length) {
+ outbuffer[bytecount++] = (byte)c;
+ if (debug) System.out.write(c);
+ // were looking for CRLFCRLF sequence
+ if (c == CR || c == LF) {
+ switch(crlfcount) {
+ case 0:
+ if (c == CR) crlfcount ++;
+ break;
+ case 1:
+ if (c == LF) crlfcount ++;
+ break;
+ case 2:
+ if (c == CR) crlfcount ++;
+ break;
+ case 3:
+ if (c == LF) crlfcount ++;
+ break;
+ }
+ } else {
+ crlfcount = 0;
+ }
+ if (crlfcount == 4) {
+ break;
+ }
+ }
+ byte[] ret = new byte[bytecount];
+ System.arraycopy(outbuffer, 0, ret, 0, bytecount);
+ return ret;
+ }
+
+ boolean running() {
+ return out.isAlive() || in.isAlive();
+ }
+
+ public void close() throws IOException {
+ if (debug) System.out.println("Closing connection (proxy)");
+ if (serverSocket != null) serverSocket.close();
+ if (clientSocket != null) clientSocket.close();
+ }
+
+ int findCRLF(byte[] b) {
+ for (int i=0; i<b.length-1; i++) {
+ if (b[i] == CR && b[i+1] == LF) {
+ return i;
+ }
+ }
+ return -1;
+ }
+
+ public void init() {
+ try {
+ byte[] buf = readHeaders(clientIn);
+ int p = findCRLF(buf);
+ if (p == -1) {
+ close();
+ return;
+ }
+ String cmd = new String(buf, 0, p, "US-ASCII");
+ String[] params = cmd.split(" ");
+ if (params[0].equals("CONNECT")) {
+ doTunnel(params[1]);
+ } else {
+ doProxy(params[1], buf, p, cmd);
+ }
+ } catch (IOException e) {
+ if (debug) {
+ System.out.println (e);
+ }
+ try {close(); } catch (IOException e1) {}
+ }
+ }
+
+ void doProxy(String dest, byte[] buf, int p, String cmdLine)
+ throws IOException
+ {
+ try {
+ URI uri = new URI(dest);
+ if (!uri.isAbsolute()) {
+ throw new IOException("request URI not absolute");
+ }
+ dest = uri.getAuthority();
+ // now extract the path from the URI and recreate the cmd line
+ int sp = cmdLine.indexOf(' ');
+ String method = cmdLine.substring(0, sp);
+ cmdLine = method + " " + uri.getPath() + " HTTP/1.1";
+ int x = cmdLine.length() - 1;
+ int i = p;
+ while (x >=0) {
+ buf[i--] = (byte)cmdLine.charAt(x--);
+ }
+ i++;
+
+ commonInit(dest, 80);
+ serverOut.write(buf, i, buf.length-i);
+ proxyCommon();
+
+ } catch (URISyntaxException e) {
+ throw new IOException(e);
+ }
+ }
+
+ void commonInit(String dest, int defaultPort) throws IOException {
+ int port;
+ String[] hostport = dest.split(":");
+ if (hostport.length == 1) {
+ port = defaultPort;
+ } else {
+ port = Integer.parseInt(hostport[1]);
+ }
+ if (debug) System.out.printf("Server: (%s/%d)\n", hostport[0], port);
+ serverSocket = new Socket(hostport[0], port);
+ serverOut = serverSocket.getOutputStream();
+
+ serverIn = new BufferedInputStream(serverSocket.getInputStream());
+ }
+
+ void proxyCommon() throws IOException {
+ out = new Thread(() -> {
+ try {
+ byte[] bb = new byte[8000];
+ int n;
+ while ((n = clientIn.read(bb)) != -1) {
+ serverOut.write(bb, 0, n);
+ }
+ serverSocket.close();
+ clientSocket.close();
+ } catch (IOException e) {
+ if (debug) {
+ System.out.println (e);
+ }
+ }
+ });
+ in = new Thread(() -> {
+ try {
+ byte[] bb = new byte[8000];
+ int n;
+ while ((n = serverIn.read(bb)) != -1) {
+ clientOut.write(bb, 0, n);
+ }
+ serverSocket.close();
+ clientSocket.close();
+ } catch (IOException e) {
+ if (debug) {
+ System.out.println(e);
+ e.printStackTrace();
+ }
+ }
+ });
+ out.setName("Proxy-outbound");
+ out.setDaemon(true);
+ in.setDaemon(true);
+ in.setName("Proxy-inbound");
+ out.start();
+ in.start();
+ }
+
+ void doTunnel(String dest) throws IOException {
+ commonInit(dest, 443);
+ clientOut.write("HTTP/1.1 200 OK\r\n\r\n".getBytes());
+ proxyCommon();
+ }
+ }
+
+ public static void main(String[] args) throws Exception {
+ int port = Integer.parseInt(args[0]);
+ boolean debug = args.length > 1 && args[1].equals("-debug");
+ System.out.println("Debugging : " + debug);
+ ProxyServer ps = new ProxyServer(port, debug);
+ System.out.println("Proxy server listening on port " + ps.getPort());
+ while (true) {
+ Thread.sleep(5000);
+ }
+ }
+}