887 lines
27 KiB
C#
887 lines
27 KiB
C#
#region License
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/*
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* WebSocketServer.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) 2012-2015 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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#region Contributors
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/*
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* Contributors:
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* - Juan Manuel Lallana <juan.manuel.lallana@gmail.com>
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* - Jonas Hovgaard <j@jhovgaard.dk>
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* - Liryna <liryna.stark@gmail.com>
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* - Rohan Singh <rohan-singh@hotmail.com>
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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.Security.Cryptography.X509Certificates;
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using System.Security.Principal;
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using System.Text;
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using System.Threading;
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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 a WebSocket protocol server.
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/// </summary>
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/// <remarks>
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/// The WebSocketServer class can provide multiple WebSocket services.
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/// </remarks>
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public class WebSocketServer
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{
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#region Private Fields
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private System.Net.IPAddress _address;
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private AuthenticationSchemes _authSchemes;
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private static readonly string _defaultRealm;
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private bool _dnsStyle;
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private string _hostname;
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private TcpListener _listener;
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private Logger _logger;
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private int _port;
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private string _realm;
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private Thread _receiveThread;
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private bool _reuseAddress;
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private bool _secure;
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private WebSocketServiceManager _services;
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private ServerSslConfiguration _sslConfig;
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private volatile ServerState _state;
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private object _sync;
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private Func<IIdentity, NetworkCredential> _userCredFinder;
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#endregion
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#region Static Constructor
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static WebSocketServer ()
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{
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_defaultRealm = "SECRET AREA";
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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 <see cref="WebSocketServer"/> class.
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/// </summary>
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/// <remarks>
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/// An instance initialized by this constructor listens for the incoming connection requests on
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/// port 80.
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/// </remarks>
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public WebSocketServer ()
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{
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init (null, System.Net.IPAddress.Any, 80, false);
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketServer"/> class with
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/// the specified <paramref name="port"/>.
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/// </summary>
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/// <remarks>
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/// <para>
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/// An instance initialized by this constructor listens for the incoming connection requests
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/// on <paramref name="port"/>.
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/// </para>
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/// <para>
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/// If <paramref name="port"/> is 443, that instance provides a secure connection.
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/// </para>
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/// </remarks>
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/// <param name="port">
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/// An <see cref="int"/> that represents the port number on which to listen.
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/// </param>
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/// <exception cref="ArgumentOutOfRangeException">
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/// <paramref name="port"/> isn't between 1 and 65535 inclusive.
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/// </exception>
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public WebSocketServer (int port)
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: this (port, port == 443)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketServer"/> class with
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/// the specified WebSocket URL.
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/// </summary>
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/// <remarks>
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/// <para>
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/// An instance initialized by this constructor listens for the incoming connection requests
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/// on the host name and port in <paramref name="url"/>.
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/// </para>
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/// <para>
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/// If <paramref name="url"/> doesn't include a port, either port 80 or 443 is used on
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/// which to listen. It's determined by the scheme (ws or wss) in <paramref name="url"/>.
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/// (Port 80 if the scheme is ws.)
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/// </para>
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/// </remarks>
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/// <param name="url">
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/// A <see cref="string"/> that represents the WebSocket URL of the server.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="url"/> is <see langword="null"/>.
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/// </exception>
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/// <exception cref="ArgumentException">
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/// <para>
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/// <paramref name="url"/> is empty.
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/// </para>
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/// <para>
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/// -or-
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/// </para>
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/// <para>
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/// <paramref name="url"/> is invalid.
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/// </para>
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/// </exception>
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public WebSocketServer (string url)
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{
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if (url == null)
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throw new ArgumentNullException ("url");
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if (url.Length == 0)
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throw new ArgumentException ("An empty string.", "url");
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Uri uri;
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string msg;
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if (!tryCreateUri (url, out uri, out msg))
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throw new ArgumentException (msg, "url");
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var host = uri.DnsSafeHost;
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var addr = host.ToIPAddress ();
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if (!addr.IsLocal ())
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throw new ArgumentException ("The host part isn't a local host name: " + url, "url");
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init (host, addr, uri.Port, uri.Scheme == "wss");
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketServer"/> class with
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/// the specified <paramref name="port"/> and <paramref name="secure"/>.
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/// </summary>
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/// <remarks>
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/// An instance initialized by this constructor listens for the incoming connection requests on
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/// <paramref name="port"/>.
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/// </remarks>
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/// <param name="port">
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/// An <see cref="int"/> that represents the port number on which to listen.
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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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/// <exception cref="ArgumentOutOfRangeException">
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/// <paramref name="port"/> isn't between 1 and 65535 inclusive.
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/// </exception>
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public WebSocketServer (int port, bool secure)
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{
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if (!port.IsPortNumber ())
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throw new ArgumentOutOfRangeException (
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"port", "Not between 1 and 65535 inclusive: " + port);
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init (null, System.Net.IPAddress.Any, port, secure);
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketServer"/> class with
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/// the specified <paramref name="address"/> and <paramref name="port"/>.
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/// </summary>
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/// <remarks>
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/// <para>
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/// An instance initialized by this constructor listens for the incoming connection requests
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/// on <paramref name="address"/> and <paramref name="port"/>.
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/// </para>
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/// <para>
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/// If <paramref name="port"/> is 443, that instance provides a secure connection.
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/// </para>
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/// </remarks>
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/// <param name="address">
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/// A <see cref="System.Net.IPAddress"/> that represents the local IP address of the server.
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/// </param>
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/// <param name="port">
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/// An <see cref="int"/> that represents the port number on which to listen.
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/// </param>
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/// <exception cref="ArgumentNullException">
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/// <paramref name="address"/> is <see langword="null"/>.
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/// </exception>
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/// <exception cref="ArgumentException">
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/// <paramref name="address"/> isn't a local IP address.
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/// </exception>
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/// <exception cref="ArgumentOutOfRangeException">
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/// <paramref name="port"/> isn't between 1 and 65535 inclusive.
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/// </exception>
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public WebSocketServer (System.Net.IPAddress address, int port)
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: this (address, port, port == 443)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="WebSocketServer"/> class with
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/// the specified <paramref name="address"/>, <paramref name="port"/>,
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/// and <paramref name="secure"/>.
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/// </summary>
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/// <remarks>
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/// An instance initialized by this constructor listens for the incoming connection requests on
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/// <paramref name="address"/> and <paramref name="port"/>.
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/// </remarks>
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/// <param name="address">
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/// A <see cref="System.Net.IPAddress"/> that represents the local IP address of the server.
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/// </param>
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/// <param name="port">
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/// An <see cref="int"/> that represents the port number on which to listen.
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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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/// <exception cref="ArgumentNullException">
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/// <paramref name="address"/> is <see langword="null"/>.
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/// </exception>
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/// <exception cref="ArgumentException">
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/// <paramref name="address"/> isn't a local IP address.
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/// </exception>
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/// <exception cref="ArgumentOutOfRangeException">
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/// <paramref name="port"/> isn't between 1 and 65535 inclusive.
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/// </exception>
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public WebSocketServer (System.Net.IPAddress address, int port, bool secure)
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{
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if (address == null)
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throw new ArgumentNullException ("address");
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if (!address.IsLocal ())
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throw new ArgumentException ("Not a local IP address: " + address, "address");
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if (!port.IsPortNumber ())
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throw new ArgumentOutOfRangeException (
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"port", "Not between 1 and 65535 inclusive: " + port);
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init (null, address, port, secure);
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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 local IP address of the server.
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/// </summary>
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/// <value>
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/// A <see cref="System.Net.IPAddress"/> that represents the local IP address of the server.
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/// </value>
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public System.Net.IPAddress Address {
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get {
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return _address;
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}
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}
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/// <summary>
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/// Gets or sets the scheme used to authenticate the clients.
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/// </summary>
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/// <value>
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/// One of the <see cref="WebSocketSharp.Net.AuthenticationSchemes"/> enum values,
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/// indicates the scheme used to authenticate the clients. The default value is
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/// <see cref="WebSocketSharp.Net.AuthenticationSchemes.Anonymous"/>.
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/// </value>
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public AuthenticationSchemes AuthenticationSchemes {
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get {
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return _authSchemes;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_authSchemes = value;
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}
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}
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/// <summary>
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/// Gets a value indicating whether the server has started.
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/// </summary>
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/// <value>
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/// <c>true</c> if the server has started; otherwise, <c>false</c>.
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/// </value>
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public bool IsListening {
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get {
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return _state == ServerState.Start;
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}
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}
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/// <summary>
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/// Gets a value indicating whether the server provides a secure connection.
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/// </summary>
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/// <value>
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/// <c>true</c> if the server provides a secure connection; otherwise, <c>false</c>.
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/// </value>
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public bool IsSecure {
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get {
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return _secure;
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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 server cleans up
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/// the inactive sessions periodically.
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/// </summary>
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/// <value>
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/// <c>true</c> if the server cleans up the inactive sessions every 60 seconds;
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/// 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 _services.KeepClean;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_services.KeepClean = value;
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}
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}
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/// <summary>
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/// Gets the logging functions.
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/// </summary>
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/// <remarks>
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/// The default logging level is <see cref="LogLevel.Error"/>. If you would like to change it,
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/// you should set the <c>Log.Level</c> property to any of the <see cref="LogLevel"/> enum
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/// values.
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/// </remarks>
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/// <value>
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/// A <see cref="Logger"/> that provides the logging functions.
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/// </value>
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public Logger Log {
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get {
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return _logger;
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}
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}
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/// <summary>
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/// Gets the port on which to listen for incoming connection requests.
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/// </summary>
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/// <value>
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/// An <see cref="int"/> that represents the port number on which to listen.
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/// </value>
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public int Port {
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get {
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return _port;
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}
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}
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/// <summary>
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/// Gets or sets the name of the realm associated with the server.
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/// </summary>
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/// <remarks>
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/// If this property is <see langword="null"/> or empty, <c>"SECRET AREA"</c> will be used as
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/// the name of the realm.
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/// </remarks>
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/// <value>
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/// A <see cref="string"/> that represents the name of the realm. The default value is
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/// <see langword="null"/>.
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/// </value>
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public string Realm {
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get {
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return _realm;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_realm = 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 server is allowed to be bound to
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/// an address that is already in use.
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/// </summary>
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/// <remarks>
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/// If you would like to resolve to wait for socket in <c>TIME_WAIT</c> state,
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/// you should set this property to <c>true</c>.
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/// </remarks>
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/// <value>
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/// <c>true</c> if the server is allowed to be bound to an address that is already in use;
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/// otherwise, <c>false</c>. The default value is <c>false</c>.
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/// </value>
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public bool ReuseAddress {
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get {
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return _reuseAddress;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_reuseAddress = value;
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}
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}
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/// <summary>
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/// Gets or sets the SSL configuration used to authenticate the server and
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/// optionally the client for secure connection.
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/// </summary>
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/// <value>
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/// A <see cref="ServerSslConfiguration"/> that represents the configuration used to
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/// authenticate the server and optionally the client for secure connection.
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/// </value>
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public ServerSslConfiguration SslConfiguration {
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get {
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return _sslConfig ?? (_sslConfig = new ServerSslConfiguration (null));
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_sslConfig = value;
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}
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}
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/// <summary>
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/// Gets or sets the delegate called to find the credentials for an identity used to
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/// authenticate a client.
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/// </summary>
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/// <value>
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/// A <c>Func<<see cref="IIdentity"/>, <see cref="NetworkCredential"/>></c> delegate
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/// that references the method(s) used to find the credentials. The default value is
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/// <see langword="null"/>.
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/// </value>
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public Func<IIdentity, NetworkCredential> UserCredentialsFinder {
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get {
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return _userCredFinder;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false);
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_userCredFinder = value;
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}
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}
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/// <summary>
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/// Gets or sets the wait time for the response to the WebSocket Ping or Close.
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/// </summary>
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/// <value>
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/// A <see cref="TimeSpan"/> that represents the wait time. The default value is
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/// the same as 1 second.
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/// </value>
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public TimeSpan WaitTime {
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get {
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return _services.WaitTime;
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}
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set {
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var msg = _state.CheckIfAvailable (true, false, false) ?? value.CheckIfValidWaitTime ();
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if (msg != null) {
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_logger.Error (msg);
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return;
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}
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_services.WaitTime = value;
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}
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}
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/// <summary>
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/// Gets the access to the WebSocket services provided by the server.
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/// </summary>
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/// <value>
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/// A <see cref="WebSocketServiceManager"/> that manages the WebSocket services.
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/// </value>
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public WebSocketServiceManager WebSocketServices {
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get {
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return _services;
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}
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}
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#endregion
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|
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#region Private Methods
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|
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private void abort ()
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{
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lock (_sync) {
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if (!IsListening)
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return;
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_state = ServerState.ShuttingDown;
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}
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_listener.Stop ();
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_services.Stop (new CloseEventArgs (CloseStatusCode.ServerError), true, false);
|
|
|
|
_state = ServerState.Stop;
|
|
}
|
|
|
|
private string checkIfCertificateExists ()
|
|
{
|
|
return _secure && (_sslConfig == null || _sslConfig.ServerCertificate == null)
|
|
? "The secure connection requires a server certificate."
|
|
: null;
|
|
}
|
|
|
|
private string getRealm ()
|
|
{
|
|
var realm = _realm;
|
|
return realm != null && realm.Length > 0 ? realm : _defaultRealm;
|
|
}
|
|
|
|
private void init (string hostname, System.Net.IPAddress address, int port, bool secure)
|
|
{
|
|
_hostname = hostname ?? address.ToString ();
|
|
_address = address;
|
|
_port = port;
|
|
_secure = secure;
|
|
|
|
_authSchemes = AuthenticationSchemes.Anonymous;
|
|
_dnsStyle = Uri.CheckHostName (hostname) == UriHostNameType.Dns;
|
|
_listener = new TcpListener (address, port);
|
|
_logger = new Logger ();
|
|
_services = new WebSocketServiceManager (_logger);
|
|
_sync = new object ();
|
|
}
|
|
|
|
private void processRequest (TcpListenerWebSocketContext context)
|
|
{
|
|
var uri = context.RequestUri;
|
|
if (uri == null || uri.Port != _port) {
|
|
context.Close (HttpStatusCode.BadRequest);
|
|
return;
|
|
}
|
|
|
|
if (_dnsStyle) {
|
|
var hostname = uri.DnsSafeHost;
|
|
if (Uri.CheckHostName (hostname) == UriHostNameType.Dns && hostname != _hostname) {
|
|
context.Close (HttpStatusCode.NotFound);
|
|
return;
|
|
}
|
|
}
|
|
|
|
WebSocketServiceHost host;
|
|
if (!_services.InternalTryGetServiceHost (uri.AbsolutePath, out host)) {
|
|
context.Close (HttpStatusCode.NotImplemented);
|
|
return;
|
|
}
|
|
|
|
host.StartSession (context);
|
|
}
|
|
|
|
private void receiveRequest ()
|
|
{
|
|
while (true) {
|
|
try {
|
|
var cl = _listener.AcceptTcpClient ();
|
|
ThreadPool.QueueUserWorkItem (
|
|
state => {
|
|
try {
|
|
var ctx = cl.GetWebSocketContext (null, _secure, _sslConfig, _logger);
|
|
if (!ctx.Authenticate (_authSchemes, getRealm (), _userCredFinder))
|
|
return;
|
|
|
|
processRequest (ctx);
|
|
}
|
|
catch (Exception ex) {
|
|
_logger.Fatal (ex.ToString ());
|
|
cl.Close ();
|
|
}
|
|
}
|
|
);
|
|
}
|
|
catch (SocketException ex) {
|
|
_logger.Warn ("Receiving has been stopped.\n reason: " + ex.Message);
|
|
break;
|
|
}
|
|
catch (Exception ex) {
|
|
_logger.Fatal (ex.ToString ());
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (IsListening)
|
|
abort ();
|
|
}
|
|
|
|
private void startReceiving ()
|
|
{
|
|
if (_reuseAddress)
|
|
_listener.Server.SetSocketOption (
|
|
SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
|
|
|
|
_listener.Start ();
|
|
_receiveThread = new Thread (new ThreadStart (receiveRequest));
|
|
_receiveThread.IsBackground = true;
|
|
_receiveThread.Start ();
|
|
}
|
|
|
|
private void stopReceiving (int millisecondsTimeout)
|
|
{
|
|
_listener.Stop ();
|
|
_receiveThread.Join (millisecondsTimeout);
|
|
}
|
|
|
|
private static bool tryCreateUri (string uriString, out Uri result, out string message)
|
|
{
|
|
if (!uriString.TryCreateWebSocketUri (out result, out message))
|
|
return false;
|
|
|
|
if (result.PathAndQuery != "/") {
|
|
result = null;
|
|
message = "Includes the path or query component: " + uriString;
|
|
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Public Methods
|
|
|
|
/// <summary>
|
|
/// Adds a WebSocket service with the specified behavior, <paramref name="path"/>,
|
|
/// and <paramref name="initializer"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para>
|
|
/// This method converts <paramref name="path"/> to URL-decoded string,
|
|
/// and removes <c>'/'</c> from tail end of <paramref name="path"/>.
|
|
/// </para>
|
|
/// <para>
|
|
/// <paramref name="initializer"/> returns an initialized specified typed
|
|
/// <see cref="WebSocketBehavior"/> instance.
|
|
/// </para>
|
|
/// </remarks>
|
|
/// <param name="path">
|
|
/// A <see cref="string"/> that represents the absolute path to the service to add.
|
|
/// </param>
|
|
/// <param name="initializer">
|
|
/// A <c>Func<T></c> delegate that references the method used to initialize
|
|
/// a new specified typed <see cref="WebSocketBehavior"/> instance (a new
|
|
/// <see cref="IWebSocketSession"/> instance).
|
|
/// </param>
|
|
/// <typeparam name="TBehavior">
|
|
/// The type of the behavior of the service to add. The TBehavior must inherit
|
|
/// the <see cref="WebSocketBehavior"/> class.
|
|
/// </typeparam>
|
|
public void AddWebSocketService<TBehavior> (string path, Func<TBehavior> initializer)
|
|
where TBehavior : WebSocketBehavior
|
|
{
|
|
var msg = path.CheckIfValidServicePath () ??
|
|
(initializer == null ? "'initializer' is null." : null);
|
|
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
_services.Add<TBehavior> (path, initializer);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds a WebSocket service with the specified behavior and <paramref name="path"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method converts <paramref name="path"/> to URL-decoded string,
|
|
/// and removes <c>'/'</c> from tail end of <paramref name="path"/>.
|
|
/// </remarks>
|
|
/// <param name="path">
|
|
/// A <see cref="string"/> that represents the absolute path to the service to add.
|
|
/// </param>
|
|
/// <typeparam name="TBehaviorWithNew">
|
|
/// The type of the behavior of the service to add. The TBehaviorWithNew must inherit
|
|
/// the <see cref="WebSocketBehavior"/> class, and must have a public parameterless
|
|
/// constructor.
|
|
/// </typeparam>
|
|
public void AddWebSocketService<TBehaviorWithNew> (string path)
|
|
where TBehaviorWithNew : WebSocketBehavior, new ()
|
|
{
|
|
AddWebSocketService<TBehaviorWithNew> (path, () => new TBehaviorWithNew ());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Removes the WebSocket service with the specified <paramref name="path"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method converts <paramref name="path"/> to URL-decoded string,
|
|
/// and removes <c>'/'</c> from tail end of <paramref name="path"/>.
|
|
/// </remarks>
|
|
/// <returns>
|
|
/// <c>true</c> if the service is successfully found and removed; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="path">
|
|
/// A <see cref="string"/> that represents the absolute path to the service to find.
|
|
/// </param>
|
|
public bool RemoveWebSocketService (string path)
|
|
{
|
|
var msg = path.CheckIfValidServicePath ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return false;
|
|
}
|
|
|
|
return _services.Remove (path);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Starts receiving the WebSocket connection requests.
|
|
/// </summary>
|
|
public void Start ()
|
|
{
|
|
lock (_sync) {
|
|
var msg = _state.CheckIfAvailable (true, false, false) ?? checkIfCertificateExists ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
_services.Start ();
|
|
startReceiving ();
|
|
|
|
_state = ServerState.Start;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stops receiving the WebSocket connection requests.
|
|
/// </summary>
|
|
public void Stop ()
|
|
{
|
|
lock (_sync) {
|
|
var msg = _state.CheckIfAvailable (false, true, false);
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
_state = ServerState.ShuttingDown;
|
|
}
|
|
|
|
stopReceiving (5000);
|
|
_services.Stop (new CloseEventArgs (), true, true);
|
|
|
|
_state = ServerState.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 represents the status code indicating the reason for the stop.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that represents the reason for the stop.
|
|
/// </param>
|
|
public void Stop (ushort code, string reason)
|
|
{
|
|
lock (_sync) {
|
|
var msg = _state.CheckIfAvailable (false, true, false) ??
|
|
WebSocket.CheckCloseParameters (code, reason, false);
|
|
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
_state = ServerState.ShuttingDown;
|
|
}
|
|
|
|
stopReceiving (5000);
|
|
if (code == (ushort) CloseStatusCode.NoStatus) {
|
|
_services.Stop (new CloseEventArgs (), true, true);
|
|
}
|
|
else {
|
|
var send = !code.IsReserved ();
|
|
_services.Stop (new CloseEventArgs (code, reason), send, send);
|
|
}
|
|
|
|
_state = ServerState.Stop;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stops receiving the WebSocket connection requests with
|
|
/// the specified <see cref="CloseStatusCode"/> and <see cref="string"/>.
|
|
/// </summary>
|
|
/// <param name="code">
|
|
/// One of the <see cref="CloseStatusCode"/> enum values, represents the status code indicating
|
|
/// the reason for the stop.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that represents the reason for the stop.
|
|
/// </param>
|
|
public void Stop (CloseStatusCode code, string reason)
|
|
{
|
|
lock (_sync) {
|
|
var msg = _state.CheckIfAvailable (false, true, false) ??
|
|
WebSocket.CheckCloseParameters (code, reason, false);
|
|
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
_state = ServerState.ShuttingDown;
|
|
}
|
|
|
|
stopReceiving (5000);
|
|
if (code == CloseStatusCode.NoStatus) {
|
|
_services.Stop (new CloseEventArgs (), true, true);
|
|
}
|
|
else {
|
|
var send = !code.IsReserved ();
|
|
_services.Stop (new CloseEventArgs (code, reason), send, send);
|
|
}
|
|
|
|
_state = ServerState.Stop;
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|