--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/net/httpclient/HandshakePhase.java Mon May 09 23:33:09 2016 +0100
@@ -0,0 +1,265 @@
+/*
+ * Copyright (c) 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.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+import java.nio.charset.CharacterCodingException;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Function;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+import static java.lang.String.format;
+import static java.util.Objects.requireNonNull;
+
+//
+// Performs a simple opening handshake and yields the channel.
+//
+// Client Request:
+//
+// GET /chat HTTP/1.1
+// Host: server.example.com
+// Upgrade: websocket
+// Connection: Upgrade
+// Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
+// Origin: http://example.com
+// Sec-WebSocket-Protocol: chat, superchat
+// Sec-WebSocket-Version: 13
+//
+//
+// Server Response:
+//
+// HTTP/1.1 101 Switching Protocols
+// Upgrade: websocket
+// Connection: Upgrade
+// Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=
+// Sec-WebSocket-Protocol: chat
+//
+final class HandshakePhase {
+
+ private final ServerSocketChannel ssc;
+
+ HandshakePhase(InetSocketAddress address) {
+ requireNonNull(address);
+ try {
+ ssc = ServerSocketChannel.open();
+ ssc.bind(address);
+ } catch (IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ }
+
+ //
+ // Returned CF completes normally after the handshake has been performed
+ //
+ CompletableFuture<SocketChannel> afterHandshake(
+ Function<List<String>, List<String>> mapping) {
+ return CompletableFuture.supplyAsync(
+ () -> {
+ SocketChannel socketChannel = accept();
+ try {
+ StringBuilder request = new StringBuilder();
+ if (!readRequest(socketChannel, request)) {
+ throw new IllegalStateException();
+ }
+ List<String> strings = Arrays.asList(
+ request.toString().split("\r\n")
+ );
+ List<String> response = mapping.apply(strings);
+ writeResponse(socketChannel, response);
+ return socketChannel;
+ } catch (Throwable t) {
+ try {
+ socketChannel.close();
+ } catch (IOException ignored) { }
+ throw t;
+ }
+ });
+ }
+
+ CompletableFuture<SocketChannel> afterHandshake() {
+ return afterHandshake((request) -> {
+ List<String> response = new LinkedList<>();
+ Iterator<String> iterator = request.iterator();
+ if (!iterator.hasNext()) {
+ throw new IllegalStateException("The request is empty");
+ }
+ if (!"GET / HTTP/1.1".equals(iterator.next())) {
+ throw new IllegalStateException
+ ("Unexpected status line: " + request.get(0));
+ }
+ response.add("HTTP/1.1 101 Switching Protocols");
+ Map<String, String> requestHeaders = new HashMap<>();
+ while (iterator.hasNext()) {
+ String header = iterator.next();
+ String[] split = header.split(": ");
+ if (split.length != 2) {
+ throw new IllegalStateException
+ ("Unexpected header: " + header
+ + ", split=" + Arrays.toString(split));
+ }
+ if (requestHeaders.put(split[0], split[1]) != null) {
+ throw new IllegalStateException
+ ("Duplicating headers: " + Arrays.toString(split));
+ }
+ }
+ if (requestHeaders.containsKey("Sec-WebSocket-Protocol")) {
+ throw new IllegalStateException("Subprotocols are not expected");
+ }
+ if (requestHeaders.containsKey("Sec-WebSocket-Extensions")) {
+ throw new IllegalStateException("Extensions are not expected");
+ }
+ expectHeader(requestHeaders, "Connection", "Upgrade");
+ response.add("Connection: Upgrade");
+ expectHeader(requestHeaders, "Upgrade", "websocket");
+ response.add("Upgrade: websocket");
+ expectHeader(requestHeaders, "Sec-WebSocket-Version", "13");
+ String key = requestHeaders.get("Sec-WebSocket-Key");
+ if (key == null) {
+ throw new IllegalStateException("Sec-WebSocket-Key is missing");
+ }
+ MessageDigest sha1 = null;
+ try {
+ sha1 = MessageDigest.getInstance("SHA-1");
+ } catch (NoSuchAlgorithmException e) {
+ throw new InternalError(e);
+ }
+ String x = key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+ sha1.update(x.getBytes(StandardCharsets.ISO_8859_1));
+ String v = Base64.getEncoder().encodeToString(sha1.digest());
+ response.add("Sec-WebSocket-Accept: " + v);
+ return response;
+ });
+ }
+
+ private String expectHeader(Map<String, String> headers,
+ String name,
+ String value) {
+ String v = headers.get(name);
+ if (!value.equals(v)) {
+ throw new IllegalStateException(
+ format("Expected '%s: %s', actual: '%s: %s'",
+ name, value, name, v)
+ );
+ }
+ return v;
+ }
+
+ URI getURI() {
+ InetSocketAddress a;
+ try {
+ a = (InetSocketAddress) ssc.getLocalAddress();
+ } catch (IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ return URI.create("ws://" + a.getHostName() + ":" + a.getPort());
+ }
+
+ private int read(SocketChannel socketChannel, ByteBuffer buffer) {
+ try {
+ int num = socketChannel.read(buffer);
+ if (num == -1) {
+ throw new IllegalStateException("Unexpected EOF");
+ }
+ assert socketChannel.isBlocking() && num > 0;
+ return num;
+ } catch (IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ }
+
+ private SocketChannel accept() {
+ SocketChannel socketChannel = null;
+ try {
+ socketChannel = ssc.accept();
+ socketChannel.configureBlocking(true);
+ } catch (IOException e) {
+ if (socketChannel != null) {
+ try {
+ socketChannel.close();
+ } catch (IOException ignored) { }
+ }
+ throw new UncheckedIOException(e);
+ }
+ return socketChannel;
+ }
+
+ private boolean readRequest(SocketChannel socketChannel,
+ StringBuilder request) {
+ ByteBuffer buffer = ByteBuffer.allocateDirect(512);
+ read(socketChannel, buffer);
+ CharBuffer decoded;
+ buffer.flip();
+ try {
+ decoded =
+ StandardCharsets.ISO_8859_1.newDecoder().decode(buffer);
+ } catch (CharacterCodingException e) {
+ throw new UncheckedIOException(e);
+ }
+ request.append(decoded);
+ return Pattern.compile("\r\n\r\n").matcher(request).find();
+ }
+
+ private void writeResponse(SocketChannel socketChannel,
+ List<String> response) {
+ String s = response.stream().collect(Collectors.joining("\r\n"))
+ + "\r\n\r\n";
+ ByteBuffer encoded;
+ try {
+ encoded =
+ StandardCharsets.ISO_8859_1.newEncoder().encode(CharBuffer.wrap(s));
+ } catch (CharacterCodingException e) {
+ throw new UncheckedIOException(e);
+ }
+ write(socketChannel, encoded);
+ }
+
+ private void write(SocketChannel socketChannel, ByteBuffer buffer) {
+ try {
+ while (buffer.hasRemaining()) {
+ socketChannel.write(buffer);
+ }
+ } catch (IOException e) {
+ try {
+ socketChannel.close();
+ } catch (IOException ignored) { }
+ throw new UncheckedIOException(e);
+ }
+ }
+}