859 lines
26 KiB
C#
859 lines
26 KiB
C#
#region License
|
|
/*
|
|
* WebSocketSessionManager.cs
|
|
*
|
|
* The MIT License
|
|
*
|
|
* Copyright (c) 2012-2014 sta.blockhead
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Text;
|
|
using System.Threading;
|
|
using System.Timers;
|
|
|
|
namespace WebSocketSharp.Server
|
|
{
|
|
/// <summary>
|
|
/// Manages the sessions in a Websocket service.
|
|
/// </summary>
|
|
public class WebSocketSessionManager
|
|
{
|
|
#region Private Static Fields
|
|
|
|
private static readonly Dictionary<string, IWebSocketSession> _emptySessions;
|
|
|
|
#endregion
|
|
|
|
#region Private Fields
|
|
|
|
private object _forSweep;
|
|
private volatile bool _keepClean;
|
|
private Logger _logger;
|
|
private Dictionary<string, IWebSocketSession> _sessions;
|
|
private volatile ServerState _state;
|
|
private volatile bool _sweeping;
|
|
private System.Timers.Timer _sweepTimer;
|
|
private object _sync;
|
|
|
|
#endregion
|
|
|
|
#region Static Constructor
|
|
|
|
static WebSocketSessionManager ()
|
|
{
|
|
_emptySessions = new Dictionary<string, IWebSocketSession> ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Internal Constructors
|
|
|
|
internal WebSocketSessionManager ()
|
|
: this (new Logger ())
|
|
{
|
|
}
|
|
|
|
internal WebSocketSessionManager (Logger logger)
|
|
{
|
|
_logger = logger;
|
|
_forSweep = new object ();
|
|
_keepClean = true;
|
|
_sessions = new Dictionary<string, IWebSocketSession> ();
|
|
_state = ServerState.Ready;
|
|
_sync = new object ();
|
|
|
|
setSweepTimer (60000);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Internal Properties
|
|
|
|
internal ServerState State {
|
|
get {
|
|
return _state;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Public Properties
|
|
|
|
/// <summary>
|
|
/// Gets the collection of every ID of the active sessions in the Websocket service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// An IEnumerable<string> that contains the collection of every ID of the active
|
|
/// sessions.
|
|
/// </value>
|
|
public IEnumerable<string> ActiveIDs {
|
|
get {
|
|
foreach (var result in Broadping (WsFrame.EmptyUnmaskPingData, 1000))
|
|
if (result.Value)
|
|
yield return result.Key;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of the sessions in the Websocket service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// An <see cref="int"/> that represents the number of the sessions.
|
|
/// </value>
|
|
public int Count {
|
|
get {
|
|
lock (_sync) {
|
|
return _sessions.Count;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the collection of every ID of the sessions in the Websocket service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// An IEnumerable<string> that contains the collection of every ID of the sessions.
|
|
/// </value>
|
|
public IEnumerable<string> IDs {
|
|
get {
|
|
if (_state == ServerState.ShuttingDown)
|
|
return _emptySessions.Keys;
|
|
|
|
lock (_sync) {
|
|
return _sessions.Keys.ToList ();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the collection of every ID of the inactive sessions in the Websocket service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// An IEnumerable<string> that contains the collection of every ID of the inactive
|
|
/// sessions.
|
|
/// </value>
|
|
public IEnumerable<string> InactiveIDs {
|
|
get {
|
|
foreach (var result in Broadping (WsFrame.EmptyUnmaskPingData, 1000))
|
|
if (!result.Value)
|
|
yield return result.Key;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the information in a session with the specified <paramref name="id"/> in the WebSocket
|
|
/// service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// A <see cref="IWebSocketSession"/> instance that provides the access to the session if it's
|
|
/// successfully found; otherwise, <see langword="null"/>.
|
|
/// </value>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
public IWebSocketSession this [string id] {
|
|
get {
|
|
IWebSocketSession session;
|
|
TryGetSession (id, out session);
|
|
|
|
return session;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a value indicating whether the manager cleans up the inactive sessions periodically.
|
|
/// </summary>
|
|
/// <value>
|
|
/// <c>true</c> if the manager cleans up the inactive sessions every 60 seconds; otherwise,
|
|
/// <c>false</c>.
|
|
/// </value>
|
|
public bool KeepClean {
|
|
get {
|
|
return _keepClean;
|
|
}
|
|
|
|
internal set {
|
|
if (!(value ^ _keepClean))
|
|
return;
|
|
|
|
_keepClean = value;
|
|
if (_state == ServerState.Start)
|
|
_sweepTimer.Enabled = value;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the collection of every information in the sessions in the Websocket service.
|
|
/// </summary>
|
|
/// <value>
|
|
/// An IEnumerable<IWebSocketSession> that contains the collection of every information
|
|
/// in the sessions.
|
|
/// </value>
|
|
public IEnumerable<IWebSocketSession> Sessions {
|
|
get {
|
|
if (_state == ServerState.ShuttingDown)
|
|
return _emptySessions.Values;
|
|
|
|
lock (_sync) {
|
|
return _sessions.Values.ToList ();
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Private Methods
|
|
|
|
private void broadcast (Opcode opcode, byte [] data, Action completed)
|
|
{
|
|
var cache = new Dictionary<CompressionMethod, byte []> ();
|
|
try {
|
|
Broadcast (opcode, data, cache);
|
|
if (completed != null)
|
|
completed ();
|
|
}
|
|
catch (Exception ex) {
|
|
_logger.Fatal (ex.ToString ());
|
|
}
|
|
finally {
|
|
cache.Clear ();
|
|
}
|
|
}
|
|
|
|
private void broadcast (Opcode opcode, Stream stream, Action completed)
|
|
{
|
|
var cache = new Dictionary <CompressionMethod, Stream> ();
|
|
try {
|
|
Broadcast (opcode, stream, cache);
|
|
if (completed != null)
|
|
completed ();
|
|
}
|
|
catch (Exception ex) {
|
|
_logger.Fatal (ex.ToString ());
|
|
}
|
|
finally {
|
|
foreach (var cached in cache.Values)
|
|
cached.Dispose ();
|
|
|
|
cache.Clear ();
|
|
}
|
|
}
|
|
|
|
private void broadcastAsync (Opcode opcode, byte [] data, Action completed)
|
|
{
|
|
ThreadPool.QueueUserWorkItem (
|
|
state => broadcast (opcode, data, completed));
|
|
}
|
|
|
|
private void broadcastAsync (Opcode opcode, Stream stream, Action completed)
|
|
{
|
|
ThreadPool.QueueUserWorkItem (
|
|
state => broadcast (opcode, stream, completed));
|
|
}
|
|
|
|
private static string createID ()
|
|
{
|
|
return Guid.NewGuid ().ToString ("N");
|
|
}
|
|
|
|
private void setSweepTimer (double interval)
|
|
{
|
|
_sweepTimer = new System.Timers.Timer (interval);
|
|
_sweepTimer.Elapsed += (sender, e) => Sweep ();
|
|
}
|
|
|
|
private bool tryGetSession (string id, out IWebSocketSession session)
|
|
{
|
|
bool result;
|
|
lock (_sync) {
|
|
result = _sessions.TryGetValue (id, out session);
|
|
}
|
|
|
|
if (!result)
|
|
_logger.Error ("A session with the specified ID not found.\nID: " + id);
|
|
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Internal Methods
|
|
|
|
internal string Add (IWebSocketSession session)
|
|
{
|
|
lock (_sync) {
|
|
if (_state != ServerState.Start)
|
|
return null;
|
|
|
|
var id = createID ();
|
|
_sessions.Add (id, session);
|
|
|
|
return id;
|
|
}
|
|
}
|
|
|
|
internal void Broadcast (
|
|
Opcode opcode, byte [] data, Dictionary<CompressionMethod, byte []> cache)
|
|
{
|
|
foreach (var session in Sessions) {
|
|
if (_state != ServerState.Start)
|
|
break;
|
|
|
|
session.Context.WebSocket.Send (opcode, data, cache);
|
|
}
|
|
}
|
|
|
|
internal void Broadcast (
|
|
Opcode opcode, Stream stream, Dictionary <CompressionMethod, Stream> cache)
|
|
{
|
|
foreach (var session in Sessions) {
|
|
if (_state != ServerState.Start)
|
|
break;
|
|
|
|
session.Context.WebSocket.Send (opcode, stream, cache);
|
|
}
|
|
}
|
|
|
|
internal Dictionary<string, bool> Broadping (byte [] frame, int millisecondsTimeout)
|
|
{
|
|
var result = new Dictionary<string, bool> ();
|
|
foreach (var session in Sessions) {
|
|
if (_state != ServerState.Start)
|
|
break;
|
|
|
|
result.Add (
|
|
session.ID, session.Context.WebSocket.Ping (frame, millisecondsTimeout));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
internal bool Remove (string id)
|
|
{
|
|
lock (_sync) {
|
|
return _sessions.Remove (id);
|
|
}
|
|
}
|
|
|
|
internal void Start ()
|
|
{
|
|
_sweepTimer.Enabled = _keepClean;
|
|
_state = ServerState.Start;
|
|
}
|
|
|
|
internal void Stop (byte [] data, bool send)
|
|
{
|
|
var payload = new PayloadData (data);
|
|
var args = new CloseEventArgs (payload);
|
|
var frameAsBytes = send
|
|
? WsFrame.CreateCloseFrame (Mask.Unmask, payload).ToByteArray ()
|
|
: null;
|
|
|
|
Stop (args, frameAsBytes);
|
|
}
|
|
|
|
internal void Stop (CloseEventArgs args, byte [] frame)
|
|
{
|
|
lock (_sync) {
|
|
_state = ServerState.ShuttingDown;
|
|
|
|
_sweepTimer.Enabled = false;
|
|
foreach (var session in _sessions.Values.ToList ())
|
|
session.Context.WebSocket.Close (args, frame, 1000);
|
|
|
|
_state = ServerState.Stop;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Public Methods
|
|
|
|
/// <summary>
|
|
/// Broadcasts a binary <paramref name="data"/> to every client in the WebSocket service.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that represents the binary data to broadcast.
|
|
/// </param>
|
|
public void Broadcast (byte [] data)
|
|
{
|
|
var msg = _state.CheckIfStart () ?? data.CheckIfValidSendData ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
if (data.LongLength <= WebSocket.FragmentLength)
|
|
broadcast (Opcode.BINARY, data, null);
|
|
else
|
|
broadcast (Opcode.BINARY, new MemoryStream (data), null);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts a text <paramref name="data"/> to every client in the WebSocket service.
|
|
/// </summary>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that represents the text data to broadcast.
|
|
/// </param>
|
|
public void Broadcast (string data)
|
|
{
|
|
var msg = _state.CheckIfStart () ?? data.CheckIfValidSendData ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
var rawData = Encoding.UTF8.GetBytes (data);
|
|
if (rawData.LongLength <= WebSocket.FragmentLength)
|
|
broadcast (Opcode.TEXT, rawData, null);
|
|
else
|
|
broadcast (Opcode.TEXT, new MemoryStream (rawData), null);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts a binary <paramref name="data"/> asynchronously to every client in the WebSocket
|
|
/// service.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the broadcast to be complete.
|
|
/// </remarks>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that represents the binary data to broadcast.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// A <see cref="Action"/> delegate that references the method(s) called when the broadcast is
|
|
/// complete.
|
|
/// </param>
|
|
public void BroadcastAsync (byte [] data, Action completed)
|
|
{
|
|
var msg = _state.CheckIfStart () ?? data.CheckIfValidSendData ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
if (data.LongLength <= WebSocket.FragmentLength)
|
|
broadcastAsync (Opcode.BINARY, data, completed);
|
|
else
|
|
broadcastAsync (Opcode.BINARY, new MemoryStream (data), completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts a text <paramref name="data"/> asynchronously to every client in the WebSocket
|
|
/// service.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the broadcast to be complete.
|
|
/// </remarks>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that represents the text data to broadcast.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// A <see cref="Action"/> delegate that references the method(s) called when the broadcast is
|
|
/// complete.
|
|
/// </param>
|
|
public void BroadcastAsync (string data, Action completed)
|
|
{
|
|
var msg = _state.CheckIfStart () ?? data.CheckIfValidSendData ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
var rawData = Encoding.UTF8.GetBytes (data);
|
|
if (rawData.LongLength <= WebSocket.FragmentLength)
|
|
broadcastAsync (Opcode.TEXT, rawData, completed);
|
|
else
|
|
broadcastAsync (Opcode.TEXT, new MemoryStream (rawData), completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcasts a binary data from the specified <see cref="Stream"/> asynchronously to every
|
|
/// client in the WebSocket service.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the broadcast to be complete.
|
|
/// </remarks>
|
|
/// <param name="stream">
|
|
/// A <see cref="Stream"/> from which contains the binary data to broadcast.
|
|
/// </param>
|
|
/// <param name="length">
|
|
/// An <see cref="int"/> that represents the number of bytes to broadcast.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// A <see cref="Action"/> delegate that references the method(s) called when the broadcast is
|
|
/// complete.
|
|
/// </param>
|
|
public void BroadcastAsync (Stream stream, int length, Action completed)
|
|
{
|
|
var msg = _state.CheckIfStart () ??
|
|
stream.CheckIfCanRead () ??
|
|
(length < 1 ? "'length' must be greater than 0." : null);
|
|
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return;
|
|
}
|
|
|
|
stream.ReadBytesAsync (
|
|
length,
|
|
data => {
|
|
var len = data.Length;
|
|
if (len == 0) {
|
|
_logger.Error ("A data cannot be read from 'stream'.");
|
|
return;
|
|
}
|
|
|
|
if (len < length)
|
|
_logger.Warn (
|
|
String.Format (
|
|
"A data with 'length' cannot be read from 'stream'.\nexpected: {0} actual: {1}",
|
|
length,
|
|
len));
|
|
|
|
if (len <= WebSocket.FragmentLength)
|
|
broadcast (Opcode.BINARY, data, completed);
|
|
else
|
|
broadcast (Opcode.BINARY, new MemoryStream (data), completed);
|
|
},
|
|
ex => _logger.Fatal (ex.ToString ()));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping to every client in the WebSocket service.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A Dictionary<string, bool> that contains the collection of pairs of session ID and
|
|
/// value indicating whether the manager received a Pong from every client in a time.
|
|
/// </returns>
|
|
public Dictionary<string, bool> Broadping ()
|
|
{
|
|
var msg = _state.CheckIfStart ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return null;
|
|
}
|
|
|
|
return Broadping (WsFrame.EmptyUnmaskPingData, 1000);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping with the specified <paramref name="message"/> to every client in the WebSocket
|
|
/// service.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A Dictionary<string, bool> that contains the collection of pairs of session ID and
|
|
/// value indicating whether the manager received a Pong from every client in a time.
|
|
/// </returns>
|
|
/// <param name="message">
|
|
/// A <see cref="string"/> that represents the message to send.
|
|
/// </param>
|
|
public Dictionary<string, bool> Broadping (string message)
|
|
{
|
|
if (message == null || message.Length == 0)
|
|
return Broadping ();
|
|
|
|
byte [] data = null;
|
|
var msg = _state.CheckIfStart () ??
|
|
(data = Encoding.UTF8.GetBytes (message)).CheckIfValidControlData ("message");
|
|
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
return null;
|
|
}
|
|
|
|
return Broadping (
|
|
WsFrame.CreatePingFrame (Mask.Unmask, data).ToByteArray (), 1000);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the session with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to close.
|
|
/// </param>
|
|
public void CloseSession (string id)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.Close ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the session with the specified <paramref name="id"/>, <paramref name="code"/>, and
|
|
/// <paramref name="reason"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to close.
|
|
/// </param>
|
|
/// <param name="code">
|
|
/// A <see cref="ushort"/> that represents the status code indicating the reason for closure.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that represents the reason for closure.
|
|
/// </param>
|
|
public void CloseSession (string id, ushort code, string reason)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.Close (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Closes the session with the specified <paramref name="id"/>, <paramref name="code"/>, and
|
|
/// <paramref name="reason"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to close.
|
|
/// </param>
|
|
/// <param name="code">
|
|
/// One of the <see cref="CloseStatusCode"/> enum values, represents the status code indicating
|
|
/// the reason for closure.
|
|
/// </param>
|
|
/// <param name="reason">
|
|
/// A <see cref="string"/> that represents the reason for closure.
|
|
/// </param>
|
|
public void CloseSession (string id, CloseStatusCode code, string reason)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.Close (code, reason);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping to the client on the session with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the manager receives a Pong from the client in a time; otherwise,
|
|
/// <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
public bool PingTo (string id)
|
|
{
|
|
IWebSocketSession session;
|
|
return TryGetSession (id, out session) &&
|
|
session.Context.WebSocket.Ping ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a Ping with the specified <paramref name="message"/> to the client on the session
|
|
/// with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the manager receives a Pong from the client in a time; otherwise,
|
|
/// <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="message">
|
|
/// A <see cref="string"/> that represents the message to send.
|
|
/// </param>
|
|
public bool PingTo (string id, string message)
|
|
{
|
|
IWebSocketSession session;
|
|
return TryGetSession (id, out session) &&
|
|
session.Context.WebSocket.Ping (message);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a binary <paramref name="data"/> to the client on the session with the specified
|
|
/// <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that represents the binary data to send.
|
|
/// </param>
|
|
public void SendTo (string id, byte [] data)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.Send (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a text <paramref name="data"/> to the client on the session with the specified
|
|
/// <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that represents the text data to send.
|
|
/// </param>
|
|
public void SendTo (string id, string data)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.Send (data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a binary <paramref name="data"/> asynchronously to the client on the session with the
|
|
/// specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="data">
|
|
/// An array of <see cref="byte"/> that represents the binary data to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// An Action<bool> delegate that references the method(s) called when the send is
|
|
/// complete. A <see cref="bool"/> passed to this delegate is <c>true</c> if the send is
|
|
/// complete successfully; otherwise, <c>false</c>.
|
|
/// </param>
|
|
public void SendToAsync (string id, byte [] data, Action<bool> completed)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.SendAsync (data, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a text <paramref name="data"/> asynchronously to the client on the session with the
|
|
/// specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="data">
|
|
/// A <see cref="string"/> that represents the text data to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// An Action<bool> delegate that references the method(s) called when the send is
|
|
/// complete. A <see cref="bool"/> passed to this delegate is <c>true</c> if the send is
|
|
/// complete successfully; otherwise, <c>false</c>.
|
|
/// </param>
|
|
public void SendToAsync (string id, string data, Action<bool> completed)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.SendAsync (data, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a binary data from the specified <see cref="Stream"/> asynchronously to the client on
|
|
/// the session with the specified <paramref name="id"/>.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This method doesn't wait for the send to be complete.
|
|
/// </remarks>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="stream">
|
|
/// A <see cref="Stream"/> from which contains the binary data to send.
|
|
/// </param>
|
|
/// <param name="length">
|
|
/// An <see cref="int"/> that represents the number of bytes to send.
|
|
/// </param>
|
|
/// <param name="completed">
|
|
/// An Action<bool> delegate that references the method(s) called when the send is
|
|
/// complete. A <see cref="bool"/> passed to this delegate is <c>true</c> if the send is
|
|
/// complete successfully; otherwise, <c>false</c>.
|
|
/// </param>
|
|
public void SendToAsync (
|
|
string id, Stream stream, int length, Action<bool> completed)
|
|
{
|
|
IWebSocketSession session;
|
|
if (TryGetSession (id, out session))
|
|
session.Context.WebSocket.SendAsync (stream, length, completed);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Cleans up the inactive sessions in the WebSocket service.
|
|
/// </summary>
|
|
public void Sweep ()
|
|
{
|
|
if (_state != ServerState.Start || _sweeping || Count == 0)
|
|
return;
|
|
|
|
lock (_forSweep) {
|
|
_sweeping = true;
|
|
foreach (var id in InactiveIDs) {
|
|
if (_state != ServerState.Start)
|
|
break;
|
|
|
|
lock (_sync) {
|
|
IWebSocketSession session;
|
|
if (_sessions.TryGetValue (id, out session)) {
|
|
var state = session.State;
|
|
if (state == WebSocketState.OPEN)
|
|
session.Context.WebSocket.Close (CloseStatusCode.ABNORMAL);
|
|
else if (state == WebSocketState.CLOSING)
|
|
continue;
|
|
else
|
|
_sessions.Remove (id);
|
|
}
|
|
}
|
|
}
|
|
|
|
_sweeping = false;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Tries to get the information in a session with the specified <paramref name="id"/> in the
|
|
/// WebSocket service.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// <c>true</c> if the session is successfully found; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
/// <param name="id">
|
|
/// A <see cref="string"/> that represents the ID of the session to find.
|
|
/// </param>
|
|
/// <param name="session">
|
|
/// When this method returns, a <see cref="IWebSocketSession"/> instance that provides the
|
|
/// access to the session if it's successfully found; otherwise, <see langword="null"/>. This
|
|
/// parameter is passed uninitialized.
|
|
/// </param>
|
|
public bool TryGetSession (string id, out IWebSocketSession session)
|
|
{
|
|
var msg = _state.CheckIfStart () ?? id.CheckIfValidSessionID ();
|
|
if (msg != null) {
|
|
_logger.Error (msg);
|
|
session = null;
|
|
|
|
return false;
|
|
}
|
|
|
|
return tryGetSession (id, out session);
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|