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1524 lines
43 KiB
1524 lines
43 KiB
#region License
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/*
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* WebSocketBehavior.cs
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*
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* The MIT License
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*
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* Copyright (c) 2012-2025 sta.blockhead
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#endregion
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using System;
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using System.Collections.Specialized;
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using System.IO;
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using System.Security.Principal;
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using WebSocketSharp.Net;
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using WebSocketSharp.Net.WebSockets;
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namespace WebSocketSharp.Server
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{
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/// <summary>
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/// Exposes a set of methods and properties used to define the behavior of
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/// a WebSocket service provided by the <see cref="WebSocketServer"/> or
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/// <see cref="HttpServer"/> class.
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/// </summary>
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/// <remarks>
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/// This class is an abstract class.
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/// </remarks>
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public abstract class WebSocketBehavior : IWebSocketSession
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{
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#region Private Fields
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private WebSocketContext _context;
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private Func<CookieCollection, CookieCollection, bool> _cookiesValidator;
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private bool _emitOnPing;
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private Func<string, bool> _hostValidator;
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private string _id;
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private bool _ignoreExtensions;
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private bool _noDelay;
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private Func<string, bool> _originValidator;
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private string _protocol;
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private WebSocketSessionManager _sessions;
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private DateTime _startTime;
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private WebSocket _websocket;
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#endregion
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#region Protected Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketBehavior"/> class.
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/// </summary>
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protected WebSocketBehavior ()
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{
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_startTime = DateTime.MaxValue;
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}
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#endregion
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#region Protected Properties
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/// <summary>
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/// Gets the HTTP headers for a session.
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/// </summary>
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/// <value>
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/// A <see cref="NameValueCollection"/> that contains the headers
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/// included in the WebSocket handshake request.
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The get operation is not available when the session has not started yet.
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/// </exception>
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protected NameValueCollection Headers {
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get {
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if (_context == null) {
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var msg = "The get operation is not available.";
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throw new InvalidOperationException (msg);
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}
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return _context.Headers;
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}
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}
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/// <summary>
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/// Gets a value indicating whether the communication is possible for
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/// a session.
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/// </summary>
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/// <value>
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/// <c>true</c> if the communication is possible; otherwise, <c>false</c>.
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected bool IsAlive {
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get {
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if (_websocket == null) {
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var msg = "The get operation is not available.";
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throw new InvalidOperationException (msg);
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}
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return _websocket.IsAlive;
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}
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}
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/// <summary>
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/// Gets the query string for a session.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="NameValueCollection"/> that contains the query
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/// parameters included in the WebSocket handshake request.
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/// </para>
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/// <para>
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/// An empty collection if not included.
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/// </para>
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected NameValueCollection QueryString {
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get {
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if (_context == null) {
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var msg = "The session has not started yet.";
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throw new InvalidOperationException (msg);
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}
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return _context.QueryString;
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}
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}
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/// <summary>
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/// Gets the current state of the WebSocket interface for a session.
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/// </summary>
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/// <value>
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/// <para>
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/// One of the <see cref="WebSocketState"/> enum values.
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/// </para>
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/// <para>
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/// It indicates the current state of the interface.
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/// </para>
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected WebSocketState ReadyState {
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get {
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if (_websocket == null) {
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var msg = "The session has not started yet.";
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throw new InvalidOperationException (msg);
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}
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return _websocket.ReadyState;
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}
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}
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/// <summary>
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/// Gets the management function for the sessions in the service.
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/// </summary>
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/// <value>
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/// A <see cref="WebSocketSessionManager"/> that manages the sessions in
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/// the service.
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected WebSocketSessionManager Sessions {
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get {
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if (_sessions == null) {
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var msg = "The session has not started yet.";
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throw new InvalidOperationException (msg);
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}
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return _sessions;
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}
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}
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/// <summary>
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/// Gets the client information for a session.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="IPrincipal"/> instance that represents identity,
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/// authentication, and security roles for the client.
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/// </para>
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/// <para>
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/// <see langword="null"/> if the client is not authenticated.
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/// </para>
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected IPrincipal User {
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get {
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if (_context == null) {
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var msg = "The session has not started yet.";
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throw new InvalidOperationException (msg);
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}
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return _context.User;
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}
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}
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/// <summary>
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/// Gets the client endpoint for a session.
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/// </summary>
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/// <value>
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/// A <see cref="System.Net.IPEndPoint"/> that represents the client
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/// IP address and port number.
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The session has not started yet.
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/// </exception>
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protected System.Net.IPEndPoint UserEndPoint {
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get {
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if (_context == null) {
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var msg = "The session has not started yet.";
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throw new InvalidOperationException (msg);
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}
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return _context.UserEndPoint;
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}
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}
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#endregion
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#region Public Properties
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/// <summary>
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/// Gets or sets the delegate used to validate the HTTP cookies.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="T:System.Func{CookieCollection, CookieCollection, bool}"/>
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/// delegate.
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/// </para>
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/// <para>
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/// It represents the delegate called when the WebSocket interface
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/// for a session validates the handshake request.
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/// </para>
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/// <para>
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/// 1st <see cref="CookieCollection"/> parameter passed to the delegate
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/// contains the cookies to validate.
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/// </para>
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/// <para>
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/// 2nd <see cref="CookieCollection"/> parameter passed to the delegate
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/// receives the cookies to send to the client.
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/// </para>
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/// <para>
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/// The method invoked by the delegate must return <c>true</c>
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/// if the cookies are valid.
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/// </para>
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/// <para>
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/// <see langword="null"/> if not necessary.
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/// </para>
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/// <para>
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/// The default value is <see langword="null"/>.
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/// </para>
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/// </value>
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public Func<CookieCollection, CookieCollection, bool> CookiesValidator {
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get {
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return _cookiesValidator;
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}
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set {
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_cookiesValidator = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether the message event is emitted
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/// when the WebSocket interface for a session receives a ping.
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/// </summary>
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/// <value>
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/// <para>
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/// <c>true</c> if the interface emits the message event when receives
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/// a ping; otherwise, <c>false</c>.
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/// </para>
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/// <para>
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/// The default value is <c>false</c>.
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/// </para>
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The set operation is not available when the session has already started.
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/// </exception>
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public bool EmitOnPing {
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get {
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return _emitOnPing;
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}
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set {
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if (_websocket != null) {
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var msg = "The set operation is not available.";
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throw new InvalidOperationException (msg);
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}
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_emitOnPing = value;
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}
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}
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/// <summary>
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/// Gets or sets the delegate used to validate the Host header.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="T:System.Func{string, bool}"/> delegate.
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/// </para>
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/// <para>
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/// It represents the delegate called when the WebSocket interface
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/// for a session validates the handshake request.
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/// </para>
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/// <para>
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/// The <see cref="string"/> parameter passed to the delegate is
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/// the value of the Host header.
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/// </para>
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/// <para>
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/// The method invoked by the delegate must return <c>true</c>
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/// if the header value is valid.
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/// </para>
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/// <para>
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/// <see langword="null"/> if not necessary.
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/// </para>
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/// <para>
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/// The default value is <see langword="null"/>.
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/// </para>
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/// </value>
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public Func<string, bool> HostValidator {
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get {
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return _hostValidator;
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}
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set {
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_hostValidator = value;
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}
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}
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/// <summary>
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/// Gets the unique ID of a session.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="string"/> that represents the unique ID of the session.
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/// </para>
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/// <para>
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/// <see langword="null"/> if the session has not started yet.
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/// </para>
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/// </value>
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public string ID {
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get {
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return _id;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether the WebSocket interface for
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/// a session ignores the Sec-WebSocket-Extensions header.
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/// </summary>
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/// <value>
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/// <para>
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/// <c>true</c> if the interface ignores the extensions requested
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/// from the client; otherwise, <c>false</c>.
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/// </para>
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/// <para>
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/// The default value is <c>false</c>.
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/// </para>
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/// </value>
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/// <exception cref="InvalidOperationException">
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/// The set operation is not available when the session has already started.
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/// </exception>
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public bool IgnoreExtensions {
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get {
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return _ignoreExtensions;
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}
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set {
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if (_websocket != null) {
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var msg = "The set operation is not available.";
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throw new InvalidOperationException (msg);
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}
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_ignoreExtensions = value;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether the underlying TCP socket of
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/// the WebSocket interface for a session disables a delay when send or
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/// receive buffer is not full.
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/// </summary>
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/// <value>
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/// <para>
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/// <c>true</c> if the delay is disabled; otherwise, <c>false</c>.
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/// </para>
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/// <para>
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/// The default value is <c>false</c>.
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/// </para>
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/// </value>
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/// <seealso cref="System.Net.Sockets.Socket.NoDelay"/>
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/// <exception cref="InvalidOperationException">
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/// The set operation is not available when the session has already started.
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/// </exception>
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public bool NoDelay {
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get {
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return _noDelay;
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}
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set {
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if (_websocket != null) {
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var msg = "The set operation is not available.";
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throw new InvalidOperationException (msg);
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}
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_noDelay = value;
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}
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}
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/// <summary>
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/// Gets or sets the delegate used to validate the Origin header.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="T:System.Func{string, bool}"/> delegate.
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/// </para>
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/// <para>
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/// It represents the delegate called when the WebSocket interface
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/// for a session validates the handshake request.
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/// </para>
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/// <para>
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/// The <see cref="string"/> parameter passed to the delegate is
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/// the value of the Origin header or <see langword="null"/> if
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/// the header is not present.
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/// </para>
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/// <para>
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/// The method invoked by the delegate must return <c>true</c>
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/// if the header value is valid.
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/// </para>
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/// <para>
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/// <see langword="null"/> if not necessary.
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/// </para>
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/// <para>
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/// The default value is <see langword="null"/>.
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/// </para>
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/// </value>
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public Func<string, bool> OriginValidator {
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get {
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return _originValidator;
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}
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set {
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_originValidator = value;
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}
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}
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/// <summary>
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/// Gets or sets the name of the WebSocket subprotocol for a session.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="string"/> that represents the name of the subprotocol.
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/// </para>
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/// <para>
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/// The value specified for a set operation must be a token defined in
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/// <see href="http://tools.ietf.org/html/rfc2616#section-2.2">
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/// RFC 2616</see>.
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/// </para>
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/// <para>
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/// The value is initialized if not requested.
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/// </para>
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/// <para>
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/// The default value is an empty string.
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/// </para>
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/// </value>
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/// <exception cref="ArgumentException">
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/// The value specified for a set operation is not a token.
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/// </exception>
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/// <exception cref="InvalidOperationException">
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/// The set operation is not available when the session has already started.
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/// </exception>
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public string Protocol {
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get {
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return _websocket != null
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? _websocket.Protocol
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: (_protocol ?? String.Empty);
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}
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set {
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if (_websocket != null) {
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var msg = "The set operation is not available.";
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throw new InvalidOperationException (msg);
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}
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if (value == null || value.Length == 0) {
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_protocol = null;
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return;
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}
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if (!value.IsToken ()) {
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var msg = "Not a token.";
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throw new ArgumentException (msg, "value");
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}
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_protocol = value;
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}
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}
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/// <summary>
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/// Gets the time that a session has started.
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/// </summary>
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/// <value>
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/// <para>
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/// A <see cref="DateTime"/> that represents the time that the session
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/// has started.
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/// </para>
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|
/// <para>
|
|
/// <see cref="DateTime.MaxValue"/> if the session has not started yet.
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/// </para>
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/// </value>
|
|
public DateTime StartTime {
|
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get {
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|
return _startTime;
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|
}
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|
}
|
|
|
|
#endregion
|
|
|
|
#region Private Methods
|
|
|
|
private string checkHandshakeRequest (WebSocketContext context)
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{
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if (_hostValidator != null) {
|
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if (!_hostValidator (context.Host)) {
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var msg = "The Host header is invalid.";
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|
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return msg;
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}
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|
}
|
|
|
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if (_originValidator != null) {
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if (!_originValidator (context.Origin)) {
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var msg = "The Origin header is non-existent or invalid.";
|
|
|
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return msg;
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}
|
|
}
|
|
|
|
if (_cookiesValidator != null) {
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var req = context.CookieCollection;
|
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var res = context.WebSocket.CookieCollection;
|
|
|
|
if (!_cookiesValidator (req, res)) {
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var msg = "The Cookie header is non-existent or invalid.";
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|
|
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return msg;
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|
}
|
|
}
|
|
|
|
return null;
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}
|
|
|
|
private void onClose (object sender, CloseEventArgs e)
|
|
{
|
|
if (_id == null)
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return;
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|
|
|
_sessions.Remove (_id);
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|
|
|
OnClose (e);
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|
}
|
|
|
|
private void onError (object sender, ErrorEventArgs e)
|
|
{
|
|
OnError (e);
|
|
}
|
|
|
|
private void onMessage (object sender, MessageEventArgs e)
|
|
{
|
|
OnMessage (e);
|
|
}
|
|
|
|
private void onOpen (object sender, EventArgs e)
|
|
{
|
|
_id = _sessions.Add (this);
|
|
|
|
if (_id == null) {
|
|
_websocket.Close (CloseStatusCode.Away);
|
|
|
|
return;
|
|
}
|
|
|
|
_startTime = DateTime.Now;
|
|
|
|
OnOpen ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Internal Methods
|
|
|
|
internal void Start (
|
|
WebSocketContext context,
|
|
WebSocketSessionManager sessions
|
|
)
|
|
{
|
|
_context = context;
|
|
_sessions = sessions;
|
|
|
|
_websocket = context.WebSocket;
|
|
_websocket.CustomHandshakeRequestChecker = checkHandshakeRequest;
|
|
|
|
if (_emitOnPing)
|
|
_websocket.EmitOnPing = true;
|
|
|
|
if (_ignoreExtensions)
|
|
_websocket.IgnoreExtensions = true;
|
|
|
|
if (_noDelay)
|
|
_websocket.NoDelay = true;
|
|
|
|
if (_protocol != null)
|
|
_websocket.Protocol = _protocol;
|
|
|
|
var waitTime = sessions.WaitTime;
|
|
|
|
if (waitTime != _websocket.WaitTime)
|
|
_websocket.WaitTime = waitTime;
|
|
|
|
_websocket.OnOpen += onOpen;
|
|
_websocket.OnMessage += onMessage;
|
|
_websocket.OnError += onError;
|
|
_websocket.OnClose += onClose;
|
|
|
|
_websocket.Accept ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Protected Methods
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </remarks>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void Close ()
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Close ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session with the specified
|
|
/// status code and reason.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </remarks>
|
|
/// <param name="code">
|
|
/// <para>
|
|
/// A <see cref="ushort"/> that specifies the status code indicating
|
|
/// the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// The status codes are defined in
|
|
/// <see href="http://tools.ietf.org/html/rfc6455#section-7.4">
|
|
/// Section 7.4</see> of RFC 6455.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// <para>
|
|
/// A <see cref="string"/> that specifies the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// Its size must be 123 bytes or less in UTF-8.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is 1010 (mandatory extension).
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is 1005 (no status) and
|
|
/// <paramref name="reason"/> is specified.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="reason"/> could not be UTF-8-encoded.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentOutOfRangeException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is less than 1000 or greater than 4999.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The size of <paramref name="reason"/> is greater than 123 bytes.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void Close (ushort code, string reason)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Close (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session with the specified
|
|
/// status code and reason.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </remarks>
|
|
/// <param name="code">
|
|
/// <para>
|
|
/// One of the <see cref="CloseStatusCode"/> enum values.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the status code indicating the reason for the close.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// <para>
|
|
/// A <see cref="string"/> that specifies the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// Its size must be 123 bytes or less in UTF-8.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is an undefined enum value.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is <see cref="CloseStatusCode.MandatoryExtension"/>.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is <see cref="CloseStatusCode.NoStatus"/> and
|
|
/// <paramref name="reason"/> is specified.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="reason"/> could not be UTF-8-encoded.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentOutOfRangeException">
|
|
/// The size of <paramref name="reason"/> is greater than 123 bytes.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void Close (CloseStatusCode code, string reason)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Close (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session asynchronously.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>
|
|
/// This method does not wait for the close to be complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </para>
|
|
/// </remarks>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void CloseAsync ()
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.CloseAsync ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session asynchronously with
|
|
/// the specified status code and reason.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>
|
|
/// This method does not wait for the close to be complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </para>
|
|
/// </remarks>
|
|
/// <param name="code">
|
|
/// <para>
|
|
/// A <see cref="ushort"/> that specifies the status code indicating
|
|
/// the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// The status codes are defined in
|
|
/// <see href="http://tools.ietf.org/html/rfc6455#section-7.4">
|
|
/// Section 7.4</see> of RFC 6455.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// <para>
|
|
/// A <see cref="string"/> that specifies the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// Its size must be 123 bytes or less in UTF-8.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is 1010 (mandatory extension).
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is 1005 (no status) and
|
|
/// <paramref name="reason"/> is specified.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="reason"/> could not be UTF-8-encoded.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentOutOfRangeException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is less than 1000 or greater than 4999.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The size of <paramref name="reason"/> is greater than 123 bytes.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void CloseAsync (ushort code, string reason)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.CloseAsync (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the WebSocket connection for a session asynchronously with
|
|
/// the specified status code and reason.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>
|
|
/// This method does not wait for the close to be complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// This method does nothing if the current state of the WebSocket
|
|
/// interface is Closing or Closed.
|
|
/// </para>
|
|
/// </remarks>
|
|
/// <param name="code">
|
|
/// <para>
|
|
/// One of the <see cref="CloseStatusCode"/> enum values.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the status code indicating the reason for the close.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// <para>
|
|
/// A <see cref="string"/> that specifies the reason for the close.
|
|
/// </para>
|
|
/// <para>
|
|
/// Its size must be 123 bytes or less in UTF-8.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="code"/> is an undefined enum value.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is <see cref="CloseStatusCode.MandatoryExtension"/>.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="code"/> is <see cref="CloseStatusCode.NoStatus"/> and
|
|
/// <paramref name="reason"/> is specified.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="reason"/> could not be UTF-8-encoded.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentOutOfRangeException">
|
|
/// The size of <paramref name="reason"/> is greater than 123 bytes.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected void CloseAsync (CloseStatusCode code, string reason)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.CloseAsync (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when the WebSocket connection for a session has been closed.
|
|
/// </summary>
|
|
/// <param name="e">
|
|
/// A <see cref="CloseEventArgs"/> that represents the event data passed
|
|
/// from a <see cref="WebSocket.OnClose"/> event.
|
|
/// </param>
|
|
protected virtual void OnClose (CloseEventArgs e)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when the WebSocket interface for a session gets an error.
|
|
/// </summary>
|
|
/// <param name="e">
|
|
/// A <see cref="ErrorEventArgs"/> that represents the event data passed
|
|
/// from a <see cref="WebSocket.OnError"/> event.
|
|
/// </param>
|
|
protected virtual void OnError (ErrorEventArgs e)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when the WebSocket interface for a session receives a message.
|
|
/// </summary>
|
|
/// <param name="e">
|
|
/// A <see cref="MessageEventArgs"/> that represents the event data passed
|
|
/// from a <see cref="WebSocket.OnMessage"/> event.
|
|
/// </param>
|
|
protected virtual void OnMessage (MessageEventArgs e)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when the WebSocket connection for a session has been established.
|
|
/// </summary>
|
|
protected virtual void OnOpen ()
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a ping to the client for a session.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the send has successfully done and a pong has been
|
|
/// received within a time; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected bool Ping ()
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
return _websocket.Ping ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a ping with the specified message to the client for a session.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the send has successfully done and a pong has been
|
|
/// received within a time; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="message">
|
|
/// <para>
|
|
/// A <see cref="string"/> that specifies the message to send.
|
|
/// </para>
|
|
/// <para>
|
|
/// Its size must be 125 bytes or less in UTF-8.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <paramref name="message"/> could not be UTF-8-encoded.
|
|
/// </exception>
|
|
/// <exception cref="ArgumentOutOfRangeException">
|
|
/// The size of <paramref name="message"/> is greater than 125 bytes.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// The session has not started yet.
|
|
/// </exception>
|
|
protected bool Ping (string message)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
return _websocket.Ping (message);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified data to the client for a session.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that specifies the binary data to send.
|
|
/// </param>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="data"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void Send (byte[] data)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Send (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified file to the client for a session.
|
|
/// </summary>
|
|
/// <param name="fileInfo">
|
|
/// <para>
|
|
/// A <see cref="FileInfo"/> that specifies the file to send.
|
|
/// </para>
|
|
/// <para>
|
|
/// The file is sent as the binary data.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// The file does not exist.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The file could not be opened.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="fileInfo"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void Send (FileInfo fileInfo)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Send (fileInfo);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified data to the client for a session.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that specifies the text data to send.
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <paramref name="data"/> could not be UTF-8-encoded.
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="data"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void Send (string data)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Send (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the data from the specified stream instance to the client for
|
|
/// a session.
|
|
/// </summary>
|
|
/// <param name="stream">
|
|
/// <para>
|
|
/// A <see cref="Stream"/> instance from which to read the data to send.
|
|
/// </para>
|
|
/// <para>
|
|
/// The data is sent as the binary data.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="length">
|
|
/// An <see cref="int"/> that specifies the number of bytes to send.
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="stream"/> cannot be read.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="length"/> is less than 1.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// No data could be read from <paramref name="stream"/>.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="stream"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void Send (Stream stream, int length)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.Send (stream, length);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified data to the client for a session asynchronously.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does not wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that specifies the binary data to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// <para>
|
|
/// An <see cref="T:System.Action{bool}"/> delegate.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the delegate called when the send is complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// The <see cref="bool"/> parameter passed to the delegate is <c>true</c>
|
|
/// if the send has successfully done; otherwise, <c>false</c>.
|
|
/// </para>
|
|
/// <para>
|
|
/// <see langword="null"/> if not necessary.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="data"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void SendAsync (byte[] data, Action<bool> completed)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.SendAsync (data, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified file to the client for a session asynchronously.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does not wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="fileInfo">
|
|
/// <para>
|
|
/// A <see cref="FileInfo"/> that specifies the file to send.
|
|
/// </para>
|
|
/// <para>
|
|
/// The file is sent as the binary data.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// <para>
|
|
/// An <see cref="T:System.Action{bool}"/> delegate.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the delegate called when the send is complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// The <see cref="bool"/> parameter passed to the delegate is <c>true</c>
|
|
/// if the send has successfully done; otherwise, <c>false</c>.
|
|
/// </para>
|
|
/// <para>
|
|
/// <see langword="null"/> if not necessary.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// The file does not exist.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The file could not be opened.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="fileInfo"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void SendAsync (FileInfo fileInfo, Action<bool> completed)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.SendAsync (fileInfo, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the specified data to the client for a session asynchronously.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does not wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that specifies the text data to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// <para>
|
|
/// An <see cref="T:System.Action{bool}"/> delegate.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the delegate called when the send is complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// The <see cref="bool"/> parameter passed to the delegate is <c>true</c>
|
|
/// if the send has successfully done; otherwise, <c>false</c>.
|
|
/// </para>
|
|
/// <para>
|
|
/// <see langword="null"/> if not necessary.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <paramref name="data"/> could not be UTF-8-encoded.
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="data"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void SendAsync (string data, Action<bool> completed)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.SendAsync (data, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends the data from the specified stream instance to the client for
|
|
/// a session asynchronously.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method does not wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="stream">
|
|
/// <para>
|
|
/// A <see cref="Stream"/> instance from which to read the data to send.
|
|
/// </para>
|
|
/// <para>
|
|
/// The data is sent as the binary data.
|
|
/// </para>
|
|
/// </param>
|
|
/// <param name="length">
|
|
/// An <see cref="int"/> that specifies the number of bytes to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// <para>
|
|
/// An <see cref="T:System.Action{bool}"/> delegate.
|
|
/// </para>
|
|
/// <para>
|
|
/// It specifies the delegate called when the send is complete.
|
|
/// </para>
|
|
/// <para>
|
|
/// The <see cref="bool"/> parameter passed to the delegate is <c>true</c>
|
|
/// if the send has successfully done; otherwise, <c>false</c>.
|
|
/// </para>
|
|
/// <para>
|
|
/// <see langword="null"/> if not necessary.
|
|
/// </para>
|
|
/// </param>
|
|
/// <exception cref="ArgumentException">
|
|
/// <para>
|
|
/// <paramref name="stream"/> cannot be read.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="length"/> is less than 1.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// No data could be read from <paramref name="stream"/>.
|
|
/// </para>
|
|
/// </exception>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="stream"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
/// <exception cref="InvalidOperationException">
|
|
/// <para>
|
|
/// The session has not started yet.
|
|
/// </para>
|
|
/// <para>
|
|
/// -or-
|
|
/// </para>
|
|
/// <para>
|
|
/// The current state of the WebSocket interface is not Open.
|
|
/// </para>
|
|
/// </exception>
|
|
protected void SendAsync (Stream stream, int length, Action<bool> completed)
|
|
{
|
|
if (_websocket == null) {
|
|
var msg = "The session has not started yet.";
|
|
|
|
throw new InvalidOperationException (msg);
|
|
}
|
|
|
|
_websocket.SendAsync (stream, length, completed);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Explicit Interface Implementations
|
|
|
|
/// <summary>
|
|
/// Gets the WebSocket interface for a session.
|
|
/// </summary>
|
|
/// <value>
|
|
/// <para>
|
|
/// A <see cref="WebSocketSharp.WebSocket"/> that represents
|
|
/// the WebSocket interface.
|
|
/// </para>
|
|
/// <para>
|
|
/// <see langword="null"/> if the session has not started yet.
|
|
/// </para>
|
|
/// </value>
|
|
WebSocket IWebSocketSession.WebSocket {
|
|
get {
|
|
return _websocket;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|