786 lines
25 KiB
C#
786 lines
25 KiB
C#
#region License
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/*
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* WebSocketServiceHost.cs
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*
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* A C# implementation of the WebSocket protocol server.
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*
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* The MIT License
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*
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* Copyright (c) 2012-2013 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.Generic;
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using System.Net.Sockets;
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using System.Text;
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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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/// Provides the functions of the server that receives the WebSocket connection requests.
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/// </summary>
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/// <remarks>
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/// The WebSocketServiceHost<T> class provides the single WebSocket service.
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/// </remarks>
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/// <typeparam name="T">
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/// The type of the WebSocket service that the server provides.
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/// The T must inherit the <see cref="WebSocketService"/> class.
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/// </typeparam>
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public class WebSocketServiceHost<T> : WebSocketServerBase, IWebSocketServiceHost
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where T : WebSocketService, new ()
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{
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#region Private Fields
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private string _servicePath;
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private WebSocketServiceManager _sessions;
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#endregion
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#region Internal Constructors
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internal WebSocketServiceHost (Logger logger)
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: base (logger)
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{
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_sessions = new WebSocketServiceManager (logger);
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}
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#endregion
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#region Public Constructors
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="port"/>.
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/// </summary>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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public WebSocketServiceHost (int port)
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: this (port, "/")
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{
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified WebSocket URL.
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/// </summary>
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/// <param name="url">
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/// A <see cref="string"/> that contains a WebSocket URL.
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/// </param>
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public WebSocketServiceHost (string url)
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: base (url)
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{
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_sessions = new WebSocketServiceManager (Log);
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="port"/> and <paramref name="secure"/>.
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/// </summary>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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/// <param name="secure">
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/// A <see cref="bool"/> that indicates providing a secure connection or not.
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/// (<c>true</c> indicates providing a secure connection.)
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/// </param>
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public WebSocketServiceHost (int port, bool secure)
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: this (port, "/", secure)
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{
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="port"/> and <paramref name="servicePath"/>.
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/// </summary>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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/// <param name="servicePath">
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/// A <see cref="string"/> that contains an absolute path.
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/// </param>
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public WebSocketServiceHost (int port, string servicePath)
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: this (System.Net.IPAddress.Any, port, servicePath)
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{
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="port"/>, <paramref name="servicePath"/>
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/// and <paramref name="secure"/>.
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/// </summary>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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/// <param name="servicePath">
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/// A <see cref="string"/> that contains an absolute path.
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/// </param>
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/// <param name="secure">
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/// A <see cref="bool"/> that indicates providing a secure connection or not.
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/// (<c>true</c> indicates providing a secure connection.)
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/// </param>
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public WebSocketServiceHost (int port, string servicePath, bool secure)
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: this (System.Net.IPAddress.Any, port, servicePath, secure)
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{
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="address"/>, <paramref name="port"/>
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/// and <paramref name="servicePath"/>.
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/// </summary>
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/// <param name="address">
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/// A <see cref="System.Net.IPAddress"/> that contains a local IP address.
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/// </param>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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/// <param name="servicePath">
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/// A <see cref="string"/> that contains an absolute path.
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/// </param>
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public WebSocketServiceHost (System.Net.IPAddress address, int port, string servicePath)
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: this (address, port, servicePath, port == 443 ? true : false)
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{
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}
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/// <summary>
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/// Initializes a new instance of the WebSocketServiceHost<T> class that listens for
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/// incoming connection attempts on the specified <paramref name="address"/>, <paramref name="port"/>,
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/// <paramref name="servicePath"/> and <paramref name="secure"/>.
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/// </summary>
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/// <param name="address">
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/// A <see cref="System.Net.IPAddress"/> that contains a local IP address.
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/// </param>
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/// <param name="port">
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/// An <see cref="int"/> that contains a port number.
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/// </param>
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/// <param name="servicePath">
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/// A <see cref="string"/> that contains an absolute path.
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/// </param>
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/// <param name="secure">
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/// A <see cref="bool"/> that indicates providing a secure connection or not.
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/// (<c>true</c> indicates providing a secure connection.)
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/// </param>
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public WebSocketServiceHost (System.Net.IPAddress address, int port, string servicePath, bool secure)
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: base (address, port, servicePath, secure)
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{
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_sessions = new WebSocketServiceManager (Log);
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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 the connection count to the WebSocket service host.
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/// </summary>
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/// <value>
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/// An <see cref="int"/> that contains the connection count.
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/// </value>
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public int ConnectionCount {
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get {
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return _sessions.Count;
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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 service host cleans up
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/// the inactive <see cref="WebSocketService"/> instances periodically.
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/// </summary>
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/// <value>
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/// <c>true</c> if the WebSocket service host cleans up the inactive WebSocket service instances
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/// every 60 seconds; otherwise, <c>false</c>. The default value is <c>true</c>.
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/// </value>
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public bool KeepClean {
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get {
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return _sessions.KeepClean;
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}
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set {
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_sessions.KeepClean = value;
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}
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}
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/// <summary>
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/// Gets the collection of the WebSocket sessions managed by the WebSocket service host.
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/// </summary>
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/// <value>
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/// A <see cref="WebSocketServiceManager"/> that contains a collection of the WebSocket sessions.
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/// </value>
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public WebSocketServiceManager Sessions {
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get {
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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 path to the WebSocket service that the WebSocket service host provides.
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/// </summary>
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/// <value>
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/// A <see cref="string"/> that contains an absolute path to the WebSocket service.
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/// </value>
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public string ServicePath {
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get {
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if (_servicePath == null)
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_servicePath = HttpUtility.UrlDecode (BaseUri.GetAbsolutePath ()).TrimEndSlash ();
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return _servicePath;
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}
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}
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/// <summary>
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/// Gets the WebSocket URL on which to listen for incoming connection attempts.
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/// </summary>
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/// <value>
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/// A <see cref="Uri"/> that contains a WebSocket URL.
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/// </value>
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public Uri Uri {
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get {
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return BaseUri;
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}
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internal set {
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BaseUri = value;
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}
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}
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#endregion
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#region Private Methods
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private void stop (ushort code, string reason)
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{
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var data = code.Append (reason);
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var msg = data.CheckIfValidCloseData ();
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if (msg != null)
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{
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Log.Error (String.Format ("{0}\ncode: {1}\nreason: {2}", msg, code, reason));
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return;
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}
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base.Stop ();
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_sessions.Stop (code, reason);
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}
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#endregion
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#region Protected Methods
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/// <summary>
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/// Accepts a WebSocket connection request.
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/// </summary>
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/// <param name="context">
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/// A <see cref="TcpListenerWebSocketContext"/> that contains the WebSocket connection request objects.
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/// </param>
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protected override void AcceptWebSocket (TcpListenerWebSocketContext context)
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{
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var websocket = context.WebSocket;
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websocket.Log = Log;
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var path = HttpUtility.UrlDecode (context.Path).TrimEndSlash ();
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if (path != ServicePath)
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{
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websocket.Close (HttpStatusCode.NotImplemented);
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return;
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}
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if (BaseUri.IsAbsoluteUri)
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websocket.Url = BaseUri;
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((IWebSocketServiceHost) this).BindWebSocket (context);
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}
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#endregion
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#region Public Methods
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/// <summary>
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/// Broadcasts the specified array of <see cref="byte"/> to all clients.
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/// </summary>
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/// <param name="data">
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/// An array of <see cref="byte"/> to broadcast.
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/// </param>
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public void Broadcast (byte [] data)
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{
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var msg = data.CheckIfValidSendData ();
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if (msg != null)
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{
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Log.Error (msg);
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return;
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}
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_sessions.Broadcast (data);
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}
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/// <summary>
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/// Broadcasts the specified <see cref="string"/> to all clients.
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/// </summary>
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/// <param name="data">
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/// A <see cref="string"/> to broadcast.
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/// </param>
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public void Broadcast (string data)
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{
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var msg = data.CheckIfValidSendData ();
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if (msg != null)
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{
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Log.Error (msg);
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return;
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}
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_sessions.Broadcast (data);
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}
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/// <summary>
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/// Sends Pings to all clients.
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/// </summary>
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/// <returns>
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/// A Dictionary<string, bool> that contains the collection of pairs of session ID and value
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/// indicating whether the WebSocket service host received a Pong from each client in a time.
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/// </returns>
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public Dictionary<string, bool> Broadping ()
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{
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return _sessions.Broadping ();
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}
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/// <summary>
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/// Sends Pings with the specified <paramref name="message"/> to all clients.
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/// </summary>
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/// <returns>
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/// A Dictionary<string, bool> that contains the collection of pairs of session ID and value
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/// indicating whether the WebSocket service host received a Pong from each client in a time.
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/// </returns>
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/// <param name="message">
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/// A <see cref="string"/> that contains a message to send.
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/// </param>
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public Dictionary<string, bool> Broadping (string message)
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{
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var msg = message.CheckIfValidPingMessage ();
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if (msg != null)
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{
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Log.Error (msg);
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return null;
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}
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return _sessions.Broadping (message);
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}
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/// <summary>
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/// Close the WebSocket session with the specified <paramref name="id"/>.
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/// </summary>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID to find.
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/// </param>
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public void CloseSession (string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return;
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}
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_sessions.StopServiceInstance (id);
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}
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/// <summary>
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/// Close the WebSocket session with the specified <paramref name="code"/>, <paramref name="reason"/>
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/// and <paramref name="id"/>.
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/// </summary>
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/// <param name="code">
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/// A <see cref="ushort"/> that contains a status code indicating the reason for closure.
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/// </param>
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/// <param name="reason">
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/// A <see cref="string"/> that contains the reason for closure.
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/// </param>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID to find.
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/// </param>
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public void CloseSession (ushort code, string reason, string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return;
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}
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_sessions.StopServiceInstance (code, reason, id);
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}
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/// <summary>
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/// Close the WebSocket session with the specified <paramref name="code"/>, <paramref name="reason"/>
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/// and <paramref name="id"/>.
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/// </summary>
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/// <param name="code">
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/// A <see cref="CloseStatusCode"/> that contains a status code indicating the reason for closure.
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/// </param>
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/// <param name="reason">
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/// A <see cref="string"/> that contains the reason for closure.
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/// </param>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID to find.
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/// </param>
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public void CloseSession (CloseStatusCode code, string reason, string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return;
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}
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_sessions.StopServiceInstance (code, reason, id);
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}
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/// <summary>
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/// Sends a Ping to the client associated with the specified <paramref name="id"/>.
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/// </summary>
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/// <returns>
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/// <c>true</c> if the WebSocket service host receives a Pong from the client in a time;
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/// otherwise, <c>false</c>.
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/// </returns>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID that represents the destination for the Ping.
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/// </param>
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public bool PingTo (string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return false;
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}
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return _sessions.PingTo (id);
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}
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/// <summary>
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/// Sends a Ping with the specified <paramref name="message"/> to the client associated with
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/// the specified <paramref name="id"/>.
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/// </summary>
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/// <returns>
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/// <c>true</c> if the WebSocket service host receives a Pong from the client in a time;
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/// otherwise, <c>false</c>.
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/// </returns>
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/// <param name="message">
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/// A <see cref="string"/> that contains a message to send.
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/// </param>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID that represents the destination for the Ping.
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/// </param>
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public bool PingTo (string message, string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return false;
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}
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return _sessions.PingTo (message, id);
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}
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/// <summary>
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/// Sends a binary data to the client associated with the specified <paramref name="id"/>.
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/// </summary>
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/// <returns>
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/// <c>true</c> if <paramref name="data"/> is successfully sent; otherwise, <c>false</c>.
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/// </returns>
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/// <param name="data">
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/// An array of <see cref="byte"/> that contains a binary data to send.
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/// </param>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID that represents the destination for the data.
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/// </param>
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public bool SendTo (byte [] data, string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return false;
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}
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return _sessions.SendTo (data, id);
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}
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/// <summary>
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/// Sends a text data to the client associated with the specified <paramref name="id"/>.
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/// </summary>
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/// <returns>
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/// <c>true</c> if <paramref name="data"/> is successfully sent; otherwise, <c>false</c>.
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/// </returns>
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/// <param name="data">
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/// A <see cref="string"/> that contains a text data to send.
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/// </param>
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/// <param name="id">
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/// A <see cref="string"/> that contains a session ID that represents the destination for the data.
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/// </param>
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public bool SendTo (string data, string id)
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{
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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Log.Error (msg);
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return false;
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}
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return _sessions.SendTo (data, id);
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}
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/// <summary>
|
|
/// Stops receiving the WebSocket connection requests.
|
|
/// </summary>
|
|
public override void Stop ()
|
|
{
|
|
base.Stop ();
|
|
_sessions.Stop ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stops receiving the WebSocket connection requests with the specified <see cref="ushort"/> and
|
|
/// <see cref="string"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// A <see cref="ushort"/> that contains a status code indicating the reason for stop.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that contains the reason for stop.
|
|
/// </param>
|
|
public void Stop (ushort code, string reason)
|
|
{
|
|
var msg = code.CheckIfValidCloseStatusCode ();
|
|
if (msg != null)
|
|
{
|
|
Log.Error (String.Format ("{0}\ncode: {1}", msg, code));
|
|
return;
|
|
}
|
|
|
|
stop (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stops receiving the WebSocket connection requests with the specified <see cref="CloseStatusCode"/>
|
|
/// and <see cref="string"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// A <see cref="CloseStatusCode"/> that contains a status code indicating the reason for stop.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that contains the reason for stop.
|
|
/// </param>
|
|
public void Stop (CloseStatusCode code, string reason)
|
|
{
|
|
stop ((ushort) code, reason);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Explicit Interface Implementation
|
|
|
|
/// <summary>
|
|
/// Binds the specified <see cref="WebSocketContext"/> to a <see cref="WebSocketService"/> instance.
|
|
/// </summary>
|
|
/// <param name="context">
|
|
/// A <see cref="WebSocketContext"/> that contains the WebSocket connection request objects to bind.
|
|
/// </param>
|
|
void IWebSocketServiceHost.BindWebSocket (WebSocketContext context)
|
|
{
|
|
T service = new T ();
|
|
service.Bind (context, _sessions);
|
|
service.Start ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts the specified array of <see cref="byte"/> to all clients.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> to broadcast.
|
|
/// </param>
|
|
void IWebSocketServiceHost.Broadcast (byte [] data)
|
|
{
|
|
_sessions.Broadcast (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts the specified <see cref="string"/> to all clients.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> to broadcast.
|
|
/// </param>
|
|
void IWebSocketServiceHost.Broadcast (string data)
|
|
{
|
|
_sessions.Broadcast (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends Pings with the specified <paramref name="message"/> to all clients.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A Dictionary<string, bool> that contains the collection of pairs of session ID and value
|
|
/// indicating whether the service host received the Pong from each client in a time.
|
|
/// </returns>
|
|
/// <param name="message">
|
|
/// A <see cref="string"/> that contains a message to send.
|
|
/// </param>
|
|
Dictionary<string, bool> IWebSocketServiceHost.Broadping (string message)
|
|
{
|
|
return _sessions.Broadping (message);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Close the WebSocket session with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID to find.
|
|
/// </param>
|
|
void IWebSocketServiceHost.CloseSession (string id)
|
|
{
|
|
_sessions.StopServiceInstance (id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Close the WebSocket session with the specified <paramref name="code"/>, <paramref name="reason"/>
|
|
/// and <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// A <see cref="ushort"/> that contains a status code indicating the reason for closure.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that contains the reason for closure.
|
|
/// </param>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID to find.
|
|
/// </param>
|
|
void IWebSocketServiceHost.CloseSession (ushort code, string reason, string id)
|
|
{
|
|
_sessions.StopServiceInstance (code, reason, id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Close the WebSocket session with the specified <paramref name="code"/>, <paramref name="reason"/>
|
|
/// and <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// A <see cref="CloseStatusCode"/> that contains a status code indicating the reason for closure.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that contains the reason for closure.
|
|
/// </param>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID to find.
|
|
/// </param>
|
|
void IWebSocketServiceHost.CloseSession (CloseStatusCode code, string reason, string id)
|
|
{
|
|
_sessions.StopServiceInstance (code, reason, id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping to the client associated with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the WebSocket service host receives a Pong from the client in a time;
|
|
/// otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID that represents the destination for the Ping.
|
|
/// </param>
|
|
bool IWebSocketServiceHost.PingTo (string id)
|
|
{
|
|
return _sessions.PingTo (id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping with the specified <paramref name="message"/> to the client associated with
|
|
/// the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the WebSocket service host receives a Pong from the client in a time;
|
|
/// otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="message">
|
|
/// A <see cref="string"/> that contains a message to send.
|
|
/// </param>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID that represents the destination for the Ping.
|
|
/// </param>
|
|
bool IWebSocketServiceHost.PingTo (string message, string id)
|
|
{
|
|
return _sessions.PingTo (message, id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a binary data to the client associated with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if <paramref name="data"/> is successfully sent; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that contains a binary data to send.
|
|
/// </param>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID that represents the destination for the data.
|
|
/// </param>
|
|
bool IWebSocketServiceHost.SendTo (byte [] data, string id)
|
|
{
|
|
return _sessions.SendTo (data, id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a text data to the client associated with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if <paramref name="data"/> is successfully sent; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that contains a text data to send.
|
|
/// </param>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that contains a session ID that represents the destination for the data.
|
|
/// </param>
|
|
bool IWebSocketServiceHost.SendTo (string data, string id)
|
|
{
|
|
return _sessions.SendTo (data, id);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stops receiving the WebSocket connection requests with the specified <see cref="ushort"/> and
|
|
/// <see cref="string"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// A <see cref="ushort"/> that contains a status code indicating the reason for stop.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that contains the reason for stop.
|
|
/// </param>
|
|
void IWebSocketServiceHost.Stop (ushort code, string reason)
|
|
{
|
|
base.Stop ();
|
|
_sessions.Stop (code, reason);
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|