Renamed WebSocketServiceManager.cs to WebSocketSessionManager.cs, added IWebSocketSession.cs and modified WebSocketService.cs
This commit is contained in:
sta
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#region License
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/*
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* WebSocketSessionManager.cs
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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.Linq;
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using System.Timers;
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namespace WebSocketSharp.Server
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{
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/// <summary>
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/// Manages the sessions to the Websocket service.
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/// </summary>
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public class WebSocketSessionManager
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{
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#region Private Fields
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private object _forSweep;
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private Logger _logger;
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private Dictionary<string, WebSocketService> _sessions;
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private volatile bool _stopped;
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private volatile bool _sweeping;
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private Timer _sweepTimer;
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private object _sync;
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#endregion
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#region Internal Constructors
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internal WebSocketSessionManager ()
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: this (new Logger ())
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{
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}
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internal WebSocketSessionManager (Logger logger)
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{
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_logger = logger;
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_forSweep = new object ();
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_sessions = new Dictionary<string, WebSocketService> ();
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_stopped = false;
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_sweeping = false;
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_sync = new object ();
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setSweepTimer ();
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startSweepTimer ();
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}
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#endregion
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#region Internal Properties
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internal IEnumerable<WebSocketService> ServiceInstances {
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get {
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lock (_sync)
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{
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return _sessions.Values.ToList ();
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}
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}
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}
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#endregion
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#region Public Properties
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/// <summary>
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/// Gets the collection of every ID of the active sessions to the Websocket service.
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/// </summary>
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/// <value>
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/// An IEnumerable<string> that contains the collection of every ID of the active sessions.
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/// </value>
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public IEnumerable<string> ActiveIDs {
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get {
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return from result in Broadping (new byte [] {})
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where result.Value
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select result.Key;
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}
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}
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/// <summary>
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/// Gets the number of the sessions to the Websocket service.
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/// </summary>
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/// <value>
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/// An <see cref="int"/> that contains the number of the sessions.
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/// </value>
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public int Count {
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get {
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lock (_sync)
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{
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return _sessions.Count;
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}
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}
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}
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/// <summary>
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/// Gets the collection of every ID of the sessions to the Websocket service.
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/// </summary>
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/// <value>
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/// An IEnumerable<string> that contains the collection of every ID of the sessions.
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/// </value>
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public IEnumerable<string> IDs {
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get {
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lock (_sync)
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{
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return _sessions.Keys.ToList ();
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}
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}
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}
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/// <summary>
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/// Gets the collection of every ID of the inactive sessions to the Websocket service.
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/// </summary>
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/// <value>
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/// An IEnumerable<string> that contains the collection of every ID of the inactive sessions.
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/// </value>
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public IEnumerable<string> InactiveIDs {
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get {
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return from result in Broadping (new byte [] {})
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where !result.Value
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select result.Key;
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}
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}
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/// <summary>
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/// Gets the session information with the specified <paramref name="id"/>.
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/// </summary>
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/// <value>
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/// A <see cref="IWebSocketSession"/> instance with <paramref name="id"/> if it is successfully found;
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/// otherwise, <see langword="null"/>.
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/// </value>
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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 IWebSocketSession this [string id] {
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get {
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var msg = id.CheckIfValidSessionID ();
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if (msg != null)
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{
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_logger.Error (msg);
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return null;
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}
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lock (_sync)
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{
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try {
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return _sessions [id];
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}
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catch {
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_logger.Error ("'id' not found.\nid: " + id);
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return null;
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}
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}
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}
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}
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/// <summary>
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/// Gets a value indicating whether the manager cleans up the inactive sessions periodically.
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/// </summary>
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/// <value>
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/// <c>true</c> if the manager cleans up the inactive sessions every 60 seconds;
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/// otherwise, <c>false</c>.
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/// </value>
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public bool KeepClean {
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get {
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return _sweepTimer.Enabled;
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}
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internal set {
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if (value)
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{
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if (!_stopped)
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startSweepTimer ();
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}
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else
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stopSweepTimer ();
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}
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}
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/// <summary>
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/// Gets the collection of the session informations to the Websocket service.
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/// </summary>
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/// <value>
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/// An IEnumerable<IWebSocketSession> that contains the collection of the session informations.
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/// </value>
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public IEnumerable<IWebSocketSession> Sessions {
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get {
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return from IWebSocketSession session in ServiceInstances
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select session;
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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 broadcast (byte [] data)
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{
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foreach (var service in ServiceInstances)
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service.Send (data);
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}
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private void broadcast (string data)
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{
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foreach (var service in ServiceInstances)
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service.Send (data);
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}
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private void broadcastAsync (byte [] data)
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{
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var services = ServiceInstances.GetEnumerator ();
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Action completed = null;
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completed = () =>
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{
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if (services.MoveNext ())
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services.Current.SendAsync (data, completed);
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};
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if (services.MoveNext ())
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services.Current.SendAsync (data, completed);
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}
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private void broadcastAsync (string data)
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{
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var services = ServiceInstances.GetEnumerator ();
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Action completed = null;
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completed = () =>
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{
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if (services.MoveNext ())
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services.Current.SendAsync (data, completed);
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};
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if (services.MoveNext ())
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services.Current.SendAsync (data, completed);
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}
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private static string createID ()
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{
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return Guid.NewGuid ().ToString ("N");
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}
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private void setSweepTimer ()
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{
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_sweepTimer = new Timer (60 * 1000);
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_sweepTimer.Elapsed += (sender, e) =>
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{
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Sweep ();
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};
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}
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private void startSweepTimer ()
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{
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if (!_sweepTimer.Enabled)
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_sweepTimer.Start ();
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}
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private void stopSweepTimer ()
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{
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if (_sweepTimer.Enabled)
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_sweepTimer.Stop ();
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}
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#endregion
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#region Internal Methods
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internal string Add (WebSocketService session)
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{
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lock (_sync)
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{
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if (_stopped)
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return null;
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var id = createID ();
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_sessions.Add (id, session);
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return id;
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}
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}
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internal void Broadcast (byte [] data)
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{
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if (_stopped)
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broadcast (data);
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else
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broadcastAsync (data);
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}
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internal void Broadcast (string data)
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{
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if (_stopped)
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broadcast (data);
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else
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broadcastAsync (data);
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}
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internal Dictionary<string, bool> Broadping (byte [] data)
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{
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var result = new Dictionary<string, bool> ();
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foreach (var service in ServiceInstances)
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result.Add (service.ID, service.Ping (data));
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return result;
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}
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internal bool PingTo (string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return false;
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}
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return service.Ping ();
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}
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internal bool PingTo (string message, string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return false;
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}
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return service.Ping (message);
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}
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internal bool Remove (string id)
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{
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lock (_sync)
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{
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return _sessions.Remove (id);
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}
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}
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internal bool SendTo (byte [] data, string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return false;
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}
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service.Send (data);
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return true;
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}
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internal bool SendTo (string data, string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return false;
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}
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service.Send (data);
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return true;
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}
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internal void Stop ()
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{
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stopSweepTimer ();
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lock (_sync)
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{
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if (_stopped)
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return;
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_stopped = true;
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foreach (var service in ServiceInstances)
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service.Stop ();
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}
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}
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internal void Stop (byte [] data)
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{
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stopSweepTimer ();
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lock (_sync)
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{
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if (_stopped)
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return;
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_stopped = true;
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foreach (var service in ServiceInstances)
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service.Stop (data);
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}
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}
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internal void StopServiceInstance (string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return;
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}
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service.Stop ();
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}
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internal void StopServiceInstance (ushort code, string reason, string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return;
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}
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service.Stop (code, reason);
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}
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internal void StopServiceInstance (CloseStatusCode code, string reason, string id)
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{
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WebSocketService service;
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if (!TryGetServiceInstance (id, out service))
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{
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_logger.Error (
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"The WebSocket session with the specified ID not found.\nID: " + id);
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return;
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}
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service.Stop (code, reason);
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}
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internal bool TryGetServiceInstance (string id, out WebSocketService service)
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{
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lock (_sync)
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{
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return _sessions.TryGetValue (id, out service);
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}
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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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/// Cleans up the inactive sessions.
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/// </summary>
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public void Sweep ()
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{
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if (_stopped || _sweeping || Count == 0)
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return;
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lock (_forSweep)
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{
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_sweeping = true;
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foreach (var id in InactiveIDs)
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{
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lock (_sync)
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{
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if (_stopped)
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break;
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WebSocketService service;
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if (_sessions.TryGetValue (id, out service))
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{
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var state = service.State;
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if (state == WebSocketState.OPEN)
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service.Stop (((ushort) CloseStatusCode.ABNORMAL).ToByteArray (ByteOrder.BIG));
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else if (state == WebSocketState.CLOSING)
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continue;
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else
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_sessions.Remove (id);
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}
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}
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}
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_sweeping = false;
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}
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}
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/// <summary>
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/// Tries to get the session information 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 session information is successfully found;
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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 to find.
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/// </param>
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/// <param name="session">
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/// When this method returns, a <see cref="IWebSocketSession"/> instance that contains the session
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/// information if it is successfully found; otherwise, <see langword="null"/>.
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/// </param>
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public bool TryGetSession (string id, out IWebSocketSession session)
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{
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WebSocketService service;
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var result = TryGetServiceInstance (id, out service);
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session = service;
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return result;
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}
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#endregion
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}
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}
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Reference in New Issue
Block a user