Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.io; |
| 20 | |
| 21 | import java.net.Socket; |
| 22 | |
| 23 | /** |
| 24 | * <p>A listener for raw network traffic within Jetty.</p> |
| 25 | * <p>{@link NetworkTrafficListener}s can be installed in a |
| 26 | * <code>org.eclipse.jetty.server.nio.NetworkTrafficSelectChannelConnector</code>, |
| 27 | * and are notified of the following network traffic events:</p> |
| 28 | * <ul> |
| 29 | * <li>Connection opened, when the server has accepted the connection from a remote client</li> |
| 30 | * <li>Incoming bytes, when the server receives bytes sent from a remote client</li> |
| 31 | * <li>Outgoing bytes, when the server sends bytes to a remote client</li> |
| 32 | * <li>Connection closed, when the server has closed the connection to a remote client</li> |
| 33 | * </ul> |
| 34 | * <p>{@link NetworkTrafficListener}s can be used to log the network traffic viewed by |
| 35 | * a Jetty server (for example logging to filesystem) for activities such as debugging |
| 36 | * or request/response cycles or for replaying request/response cycles to other servers.</p> |
| 37 | */ |
| 38 | public interface NetworkTrafficListener |
| 39 | { |
| 40 | /** |
| 41 | * <p>Callback method invoked when a connection from a remote client has been accepted.</p> |
| 42 | * <p>The {@code socket} parameter can be used to extract socket address information of |
| 43 | * the remote client.</p> |
| 44 | * |
| 45 | * @param socket the socket associated with the remote client |
| 46 | */ |
| 47 | public void opened(Socket socket); |
| 48 | |
| 49 | /** |
| 50 | * <p>Callback method invoked when bytes sent by a remote client arrived on the server.</p> |
| 51 | * |
| 52 | * @param socket the socket associated with the remote client |
| 53 | * @param bytes the read-only buffer containing the incoming bytes |
| 54 | */ |
| 55 | public void incoming(Socket socket, Buffer bytes); |
| 56 | |
| 57 | /** |
| 58 | * <p>Callback method invoked when bytes are sent to a remote client from the server.</p> |
| 59 | * <p>This method is invoked after the bytes have been actually written to the remote client.</p> |
| 60 | * |
| 61 | * @param socket the socket associated with the remote client |
| 62 | * @param bytes the read-only buffer containing the outgoing bytes |
| 63 | */ |
| 64 | public void outgoing(Socket socket, Buffer bytes); |
| 65 | |
| 66 | /** |
| 67 | * <p>Callback method invoked when a connection to a remote client has been closed.</p> |
| 68 | * <p>The {@code socket} parameter is already closed when this method is called, so it |
| 69 | * cannot be queried for socket address information of the remote client.<br /> |
| 70 | * However, the {@code socket} parameter is the same object passed to {@link #opened(Socket)}, |
| 71 | * so it is possible to map socket information in {@link #opened(Socket)} and retrieve it |
| 72 | * in this method. |
| 73 | * |
| 74 | * @param socket the (closed) socket associated with the remote client |
| 75 | */ |
| 76 | public void closed(Socket socket); |
| 77 | |
| 78 | /** |
| 79 | * <p>A commodity class that implements {@link NetworkTrafficListener} with empty methods.</p> |
| 80 | */ |
| 81 | public static class Empty implements NetworkTrafficListener |
| 82 | { |
| 83 | public void opened(Socket socket) |
| 84 | { |
| 85 | } |
| 86 | |
| 87 | public void incoming(Socket socket, Buffer bytes) |
| 88 | { |
| 89 | } |
| 90 | |
| 91 | public void outgoing(Socket socket, Buffer bytes) |
| 92 | { |
| 93 | } |
| 94 | |
| 95 | public void closed(Socket socket) |
| 96 | { |
| 97 | } |
| 98 | } |
| 99 | } |