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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).
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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.http.websocketx;

import io.netty.handler.codec.http.DefaultFullHttpRequest;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpHeaders.Names;
import io.netty.handler.codec.http.HttpHeaders.Values;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.net.URI;

/**
 * 
 * Performs client side opening and closing handshakes for web socket specification version draft-ietf-hybi-thewebsocketprotocol-
 * 17
 * 
 */
public class WebSocketClientHandshaker13 extends WebSocketClientHandshaker {

    private static final InternalLogger logger = InternalLoggerFactory.getInstance(WebSocketClientHandshaker13.class);

    public static final String MAGIC_GUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";

    private String expectedChallengeResponseString;

    private final boolean allowExtensions;

    /**
     * Creates a new instance.
     *
     * @param webSocketURL
     *            URL for web socket communications. e.g "ws://myhost.com/mypath". Subsequent web socket frames will be
     *            sent to this URL.
     * @param version
     *            Version of web socket specification to use to connect to the server
     * @param subprotocol
     *            Sub protocol request sent to the server.
     * @param allowExtensions
     *            Allow extensions to be used in the reserved bits of the web socket frame
     * @param customHeaders
     *            Map of custom headers to add to the client request
     * @param maxFramePayloadLength
     *            Maximum length of a frame's payload
     */
    public WebSocketClientHandshaker13(URI webSocketURL, WebSocketVersion version, String subprotocol,
            boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength) {
        super(webSocketURL, version, subprotocol, customHeaders, maxFramePayloadLength);
        this.allowExtensions = allowExtensions;
    }

    /**
     * /**
     * 
     * Sends the opening request to the server:
     * 
     *
     *      * GET /chat HTTP/1.1
     * Host: server.example.com
     * Upgrade: websocket
     * Connection: Upgrade
     * Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
     * Sec-WebSocket-Origin: http://example.com
     * Sec-WebSocket-Protocol: chat, superchat
     * Sec-WebSocket-Version: 13
     * 
     *
     */
    @Override
    protected FullHttpRequest newHandshakeRequest() {
        // Get path
        URI wsURL = uri();
        String path = wsURL.getPath();
        if (wsURL.getQuery() != null && !wsURL.getQuery().isEmpty()) {
            path = wsURL.getPath() + '?' + wsURL.getQuery();
        }

        if (path == null || path.isEmpty()) {
            path = "/";
        }

        // Get 16 bit nonce and base 64 encode it
        byte[] nonce = WebSocketUtil.randomBytes(16);
        String key = WebSocketUtil.base64(nonce);

        String acceptSeed = key + MAGIC_GUID;
        byte[] sha1 = WebSocketUtil.sha1(acceptSeed.getBytes(CharsetUtil.US_ASCII));
        expectedChallengeResponseString = WebSocketUtil.base64(sha1);

        if (logger.isDebugEnabled()) {
            logger.debug(
                    "WebSocket version 13 client handshake key: {}, expected response: {}",
                    key, expectedChallengeResponseString);
        }

        // Format request
        int wsPort = wsURL.getPort();
        // check if the URI contained a port if not set the correct one depending on the schema.
        // See https://github.com/netty/netty/pull/1558
        if (wsPort == -1) {
            if ("wss".equals(wsURL.getScheme())) {
                wsPort = 443;
            } else {
                wsPort = 80;
            }
        }

        FullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, path);
        HttpHeaders headers = request.headers();

        headers.add(Names.UPGRADE, Values.WEBSOCKET.toLowerCase())
               .add(Names.CONNECTION, Values.UPGRADE)
               .add(Names.SEC_WEBSOCKET_KEY, key)
               .add(Names.HOST, wsURL.getHost() + ':' + wsPort);

        String originValue = "http://" + wsURL.getHost();
        if (wsPort != 80 && wsPort != 443) {
            // if the port is not standard (80/443) its needed to add the port to the header.
            // See http://tools.ietf.org/html/rfc6454#section-6.2
            originValue = originValue + ':' + wsPort;
        }
        headers.add(Names.SEC_WEBSOCKET_ORIGIN, originValue);

        String expectedSubprotocol = expectedSubprotocol();
        if (expectedSubprotocol != null && !expectedSubprotocol.isEmpty()) {
            headers.add(Names.SEC_WEBSOCKET_PROTOCOL, expectedSubprotocol);
        }

        headers.add(Names.SEC_WEBSOCKET_VERSION, "13");

        if (customHeaders != null) {
            headers.add(customHeaders);
        }
        return request;
    }

    /**
     * 
     * Process server response:
     * 
     *
     *      * HTTP/1.1 101 Switching Protocols
     * Upgrade: websocket
     * Connection: Upgrade
     * Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=
     * Sec-WebSocket-Protocol: chat
     * 
     *
     * @param response
     *            HTTP response returned from the server for the request sent by beginOpeningHandshake00().
     * @throws WebSocketHandshakeException
     */
    @Override
    protected void verify(FullHttpResponse response) {
        final HttpResponseStatus status = HttpResponseStatus.SWITCHING_PROTOCOLS;
        final HttpHeaders headers = response.headers();

        if (!response.getStatus().equals(status)) {
            throw new WebSocketHandshakeException("Invalid handshake response getStatus: " + response.getStatus());
        }

        String upgrade = headers.get(Names.UPGRADE);
        if (!Values.WEBSOCKET.equalsIgnoreCase(upgrade)) {
            throw new WebSocketHandshakeException("Invalid handshake response upgrade: " + upgrade);
        }

        String connection = headers.get(Names.CONNECTION);
        if (!Values.UPGRADE.equalsIgnoreCase(connection)) {
            throw new WebSocketHandshakeException("Invalid handshake response connection: " + connection);
        }

        String accept = headers.get(Names.SEC_WEBSOCKET_ACCEPT);
        if (accept == null || !accept.equals(expectedChallengeResponseString)) {
            throw new WebSocketHandshakeException(String.format(
                    "Invalid challenge. Actual: %s. Expected: %s", accept, expectedChallengeResponseString));
        }
    }

    @Override
    protected WebSocketFrameDecoder newWebsocketDecoder() {
        return new WebSocket13FrameDecoder(false, allowExtensions, maxFramePayloadLength());
    }

    @Override
    protected WebSocketFrameEncoder newWebSocketEncoder() {
        return new WebSocket13FrameEncoder(true);
    }
}