Add WebAssembly session
This commit is contained in:
Frank A. Krueger
parent
a0e45ab61a
commit
91627643e2
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@ -97,7 +97,7 @@ namespace Ooui.AspNetCore
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//
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//
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var token = CancellationToken.None;
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var token = CancellationToken.None;
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var webSocket = await context.WebSockets.AcceptWebSocketAsync ("ooui");
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var webSocket = await context.WebSockets.AcceptWebSocketAsync ("ooui");
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var session = new Ooui.UI.Session (webSocket, activeSession.Element, w, h, token);
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var session = new Ooui.WebSocketSession (webSocket, activeSession.Element, w, h, token);
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await session.RunAsync ().ConfigureAwait (false);
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await session.RunAsync ().ConfigureAwait (false);
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}
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}
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@ -133,7 +133,7 @@ namespace Xamarin.Forms
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{
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{
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if (timer != null)
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if (timer != null)
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return;
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return;
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var interval = TimeSpan.FromSeconds (1.0 / Ooui.UI.Session.MaxFps);
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var interval = TimeSpan.FromSeconds (1.0 / Ooui.UI.MaxFps);
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timer = new Timer ((_ => {
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timer = new Timer ((_ => {
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this.SendSignals ();
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this.SendSignals ();
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}), null, (int)interval.TotalMilliseconds, (int)interval.TotalMilliseconds);
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}), null, (int)interval.TotalMilliseconds, (int)interval.TotalMilliseconds);
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@ -0,0 +1,103 @@
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using System;
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using System.Collections.Generic;
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namespace Ooui
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{
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public abstract class Session
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{
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protected readonly Element element;
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protected readonly double initialWidth;
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protected readonly double initialHeight;
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protected readonly HashSet<string> createdIds;
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protected readonly List<Message> queuedMessages = new List<Message> ();
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public Session (Element element, double initialWidth, double initialHeight)
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{
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this.element = element;
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this.initialWidth = initialWidth;
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this.initialHeight = initialHeight;
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//
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// Keep a list of all the elements for which we've transmitted the initial state
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//
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createdIds = new HashSet<string> {
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"window",
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"document",
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"document.body",
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};
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}
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void QueueStateMessagesLocked (EventTarget target)
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{
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if (target == null) return;
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var created = false;
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foreach (var m in target.StateMessages) {
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if (m.MessageType == MessageType.Create) {
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createdIds.Add (m.TargetId);
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created = true;
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}
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if (created) {
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QueueMessageLocked (m);
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}
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}
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}
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void QueueMessageLocked (Message message)
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{
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//
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// Make sure all the referenced objects have been created
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//
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if (!createdIds.Contains (message.TargetId)) {
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QueueStateMessagesLocked (element.GetElementById (message.TargetId));
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}
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if (message.Value is EventTarget ve) {
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if (!createdIds.Contains (ve.Id)) {
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QueueStateMessagesLocked (ve);
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}
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}
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else if (message.Value is Array a) {
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for (var i = 0; i < a.Length; i++) {
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// Console.WriteLine ($"A{i} = {a.GetValue(i)}");
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if (a.GetValue (i) is EventTarget e && !createdIds.Contains (e.Id)) {
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QueueStateMessagesLocked (e);
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}
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}
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}
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//
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// Add it to the queue
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//
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//Console.WriteLine ($"QM {message.MessageType} {message.TargetId} {message.Key} {message.Value}");
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queuedMessages.Add (message);
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}
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protected virtual void QueueMessage (Message message)
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{
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lock (queuedMessages) {
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QueueMessageLocked (message);
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}
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}
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protected void Error (string message, Exception ex)
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{
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#if PCL
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System.Diagnostics.Debug.WriteLine (string.Format ("{0}: {1}", message, ex));
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#else
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Console.ForegroundColor = ConsoleColor.Red;
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Console.WriteLine ("{0}: {1}", message, ex);
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Console.ResetColor ();
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#endif
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}
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protected void Info (string message)
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{
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#if PCL
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System.Diagnostics.Debug.WriteLine (message);
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#else
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Console.WriteLine (message);
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#endif
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}
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}
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}
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255
Ooui/UI.cs
255
Ooui/UI.cs
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@ -7,16 +7,13 @@ using System.Threading;
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using System.Threading.Tasks;
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using System.Threading.Tasks;
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using System.Net;
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using System.Net;
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#if !PCL
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using System.Net.WebSockets;
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#endif
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namespace Ooui
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namespace Ooui
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{
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{
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public static class UI
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public static class UI
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{
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{
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#if !PCL
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public const int MaxFps = 30;
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#if !PCL
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static readonly ManualResetEvent started = new ManualResetEvent (false);
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static readonly ManualResetEvent started = new ManualResetEvent (false);
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[ThreadStatic]
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[ThreadStatic]
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@ -538,8 +535,8 @@ namespace Ooui
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//
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//
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// Connect the web socket
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// Connect the web socket
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//
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//
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WebSocketContext webSocketContext = null;
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System.Net.WebSockets.WebSocketContext webSocketContext = null;
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WebSocket webSocket = null;
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System.Net.WebSockets.WebSocket webSocket = null;
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try {
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try {
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webSocketContext = await listenerContext.AcceptWebSocketAsync (subProtocol: "ooui").ConfigureAwait (false);
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webSocketContext = await listenerContext.AcceptWebSocketAsync (subProtocol: "ooui").ConfigureAwait (false);
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webSocket = webSocketContext.WebSocket;
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webSocket = webSocketContext.WebSocket;
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@ -577,10 +574,10 @@ namespace Ooui
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// Create a new session and let it handle everything from here
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// Create a new session and let it handle everything from here
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//
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//
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try {
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try {
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var session = new Session (webSocket, element, w, h, serverToken);
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var session = new WebSocketSession (webSocket, element, w, h, serverToken);
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await session.RunAsync ().ConfigureAwait (false);
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await session.RunAsync ().ConfigureAwait (false);
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}
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}
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catch (WebSocketException ex) when (ex.WebSocketErrorCode == WebSocketError.ConnectionClosedPrematurely) {
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catch (System.Net.WebSockets.WebSocketException ex) when (ex.WebSocketErrorCode == System.Net.WebSockets.WebSocketError.ConnectionClosedPrematurely) {
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// The remote party closed the WebSocket connection without completing the close handshake.
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// The remote party closed the WebSocket connection without completing the close handshake.
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}
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}
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catch (Exception ex) {
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catch (Exception ex) {
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@ -598,217 +595,43 @@ namespace Ooui
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Console.ResetColor ();
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Console.ResetColor ();
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}
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}
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public class Session
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#endif
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static readonly Dictionary<string, Element> globalElements = new Dictionary<string, Element> ();
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static readonly Dictionary<string, WebAssemblySession> globalElementSessions = new Dictionary<string, WebAssemblySession> ();
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public static void SetGlobalElement (string globalElementId, Element element)
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{
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{
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readonly WebSocket webSocket;
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lock (globalElements) {
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readonly Element element;
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globalElements[globalElementId] = element;
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readonly Action<Message> handleElementMessageSent;
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readonly CancellationTokenSource sessionCts = new CancellationTokenSource ();
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readonly CancellationTokenSource linkedCts;
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readonly CancellationToken token;
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readonly HashSet<string> createdIds;
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readonly List<Message> queuedMessages = new List<Message> ();
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public const int MaxFps = 30;
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readonly System.Timers.Timer sendThrottle;
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DateTime lastTransmitTime = DateTime.MinValue;
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readonly TimeSpan throttleInterval = TimeSpan.FromSeconds (1.0 / MaxFps);
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readonly double initialWidth;
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readonly double initialHeight;
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public Session (WebSocket webSocket, Element element, double initialWidth, double initialHeight, CancellationToken serverToken)
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{
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this.webSocket = webSocket;
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this.element = element;
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this.initialWidth = initialWidth;
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this.initialHeight = initialHeight;
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//
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// Create a new session cancellation token that will trigger
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// automatically if the server shutsdown or the session shutsdown.
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//
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linkedCts = CancellationTokenSource.CreateLinkedTokenSource (serverToken, sessionCts.Token);
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token = linkedCts.Token;
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//
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// Keep a list of all the elements for which we've transmitted the initial state
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//
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createdIds = new HashSet<string> {
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"window",
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"document",
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"document.body",
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};
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//
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// Preparse handlers for the element
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//
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handleElementMessageSent = QueueMessage;
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//
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// Create a timer to use as a throttle when sending messages
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//
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sendThrottle = new System.Timers.Timer (throttleInterval.TotalMilliseconds);
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sendThrottle.Elapsed += (s, e) => {
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// System.Console.WriteLine ("TICK SEND THROTTLE FOR {0}", element);
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if ((e.SignalTime - lastTransmitTime) >= throttleInterval) {
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sendThrottle.Enabled = false;
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lastTransmitTime = e.SignalTime;
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TransmitQueuedMessages ();
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}
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};
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}
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public async Task RunAsync ()
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{
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//
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// Start watching for changes in the element
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//
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element.MessageSent += handleElementMessageSent;
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try {
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//
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// Add it to the document body
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//
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if (element.WantsFullScreen) {
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element.Style.Width = initialWidth;
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element.Style.Height = initialHeight;
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}
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QueueMessage (Message.Call ("document.body", "appendChild", element));
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//
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// Start the Read Loop
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//
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var receiveBuffer = new byte[64*1024];
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while (webSocket.State == WebSocketState.Open && !token.IsCancellationRequested) {
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var receiveResult = await webSocket.ReceiveAsync(new ArraySegment<byte>(receiveBuffer), token).ConfigureAwait (false);
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if (receiveResult.MessageType == WebSocketMessageType.Close) {
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await webSocket.CloseAsync (WebSocketCloseStatus.NormalClosure, "", token).ConfigureAwait (false);
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sessionCts.Cancel ();
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}
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else if (receiveResult.MessageType == WebSocketMessageType.Binary) {
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await webSocket.CloseAsync (WebSocketCloseStatus.InvalidMessageType, "Cannot accept binary frame", token).ConfigureAwait (false);
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sessionCts.Cancel ();
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}
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else {
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var size = receiveResult.Count;
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while (!receiveResult.EndOfMessage) {
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if (size >= receiveBuffer.Length) {
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await webSocket.CloseAsync (WebSocketCloseStatus.MessageTooBig, "Message too big", token).ConfigureAwait (false);
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return;
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}
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receiveResult = await webSocket.ReceiveAsync (new ArraySegment<byte>(receiveBuffer, size, receiveBuffer.Length - size), token).ConfigureAwait (false);
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size += receiveResult.Count;
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}
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var receivedString = Encoding.UTF8.GetString (receiveBuffer, 0, size);
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try {
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// Console.WriteLine ("RECEIVED: {0}", receivedString);
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var message = Newtonsoft.Json.JsonConvert.DeserializeObject<Message> (receivedString);
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element.Receive (message);
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}
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catch (Exception ex) {
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Error ("Failed to process received message", ex);
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}
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}
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}
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}
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finally {
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element.MessageSent -= handleElementMessageSent;
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}
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}
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void QueueStateMessagesLocked (EventTarget target)
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{
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if (target == null) return;
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var created = false;
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foreach (var m in target.StateMessages) {
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if (m.MessageType == MessageType.Create) {
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createdIds.Add (m.TargetId);
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created = true;
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}
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if (created) {
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QueueMessageLocked (m);
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}
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}
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}
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void QueueMessageLocked (Message message)
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{
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//
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// Make sure all the referenced objects have been created
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//
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if (!createdIds.Contains (message.TargetId)) {
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QueueStateMessagesLocked (element.GetElementById (message.TargetId));
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}
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if (message.Value is EventTarget ve) {
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if (!createdIds.Contains (ve.Id)) {
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QueueStateMessagesLocked (ve);
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}
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}
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else if (message.Value is Array a) {
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for (var i = 0; i < a.Length; i++) {
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// Console.WriteLine ($"A{i} = {a.GetValue(i)}");
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if (a.GetValue (i) is EventTarget e && !createdIds.Contains (e.Id)) {
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QueueStateMessagesLocked (e);
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}
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}
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}
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//
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// Add it to the queue
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//
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//Console.WriteLine ($"QM {message.MessageType} {message.TargetId} {message.Key} {message.Value}");
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queuedMessages.Add (message);
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}
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void QueueMessage (Message message)
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{
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lock (queuedMessages) {
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QueueMessageLocked (message);
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}
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sendThrottle.Enabled = true;
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}
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async void TransmitQueuedMessages ()
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{
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try {
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//
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// Dequeue as many messages as we can
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//
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var messagesToSend = new List<Message> ();
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System.Runtime.CompilerServices.ConfiguredTaskAwaitable task;
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lock (queuedMessages) {
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messagesToSend.AddRange (queuedMessages);
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queuedMessages.Clear ();
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if (messagesToSend.Count == 0)
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return;
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//
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// Now actually send this message
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// Do this while locked to make sure SendAsync is called in the right order
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//
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var json = Newtonsoft.Json.JsonConvert.SerializeObject (messagesToSend);
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var outputBuffer = new ArraySegment<byte> (Encoding.UTF8.GetBytes (json));
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//Console.WriteLine ("TRANSMIT " + json);
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task = webSocket.SendAsync (outputBuffer, WebSocketMessageType.Text, true, token).ConfigureAwait (false);
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}
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await task;
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}
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catch (Exception ex) {
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Error ("Failed to send queued messages, aborting session", ex);
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element.MessageSent -= handleElementMessageSent;
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sessionCts.Cancel ();
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}
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}
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}
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}
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}
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#endif
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public static void StartWebAssemblySession (string sessionId, string globalElementId)
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{
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Element element;
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lock (globalElements) {
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if (!globalElements.TryGetValue (globalElementId, out element))
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return;
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}
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||||||
|
var g = new WebAssemblySession (sessionId, element, 640, 480);
|
||||||
|
lock (globalElementSessions) {
|
||||||
|
globalElementSessions[sessionId] = g;
|
||||||
|
}
|
||||||
|
g.StartSession ();
|
||||||
|
}
|
||||||
|
|
||||||
|
public static void ReceiveWebAssemblySessionMessageJson (string sessionId, string json)
|
||||||
|
{
|
||||||
|
WebAssemblySession g;
|
||||||
|
lock (globalElementSessions) {
|
||||||
|
if (!globalElementSessions.TryGetValue (sessionId, out g))
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
g.ReceiveMessageJson (json);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static readonly Dictionary<string, Style> styles =
|
static readonly Dictionary<string, Style> styles =
|
||||||
new Dictionary<string, Style> ();
|
new Dictionary<string, Style> ();
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,84 @@
|
||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
|
||||||
|
namespace Ooui
|
||||||
|
{
|
||||||
|
public class WebAssemblySession : Session
|
||||||
|
{
|
||||||
|
readonly string id;
|
||||||
|
readonly Action<Message> handleElementMessageSent;
|
||||||
|
|
||||||
|
public WebAssemblySession (string id, Element element, double initialWidth, double initialHeight)
|
||||||
|
: base (element, initialWidth, initialHeight)
|
||||||
|
{
|
||||||
|
this.id = id;
|
||||||
|
handleElementMessageSent = QueueMessage;
|
||||||
|
}
|
||||||
|
|
||||||
|
void TransmitQueuedMessages ()
|
||||||
|
{
|
||||||
|
//
|
||||||
|
// Dequeue as many messages as we can
|
||||||
|
//
|
||||||
|
var messagesToSend = new List<Message> ();
|
||||||
|
lock (queuedMessages) {
|
||||||
|
messagesToSend.AddRange (queuedMessages);
|
||||||
|
queuedMessages.Clear ();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (messagesToSend.Count == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Now actually send the messages
|
||||||
|
//
|
||||||
|
var json = Newtonsoft.Json.JsonConvert.SerializeObject (messagesToSend);
|
||||||
|
SendMessagesJson (json);
|
||||||
|
}
|
||||||
|
|
||||||
|
protected override void QueueMessage (Message message)
|
||||||
|
{
|
||||||
|
base.QueueMessage (message);
|
||||||
|
TransmitQueuedMessages ();
|
||||||
|
}
|
||||||
|
|
||||||
|
void SendMessagesJson (string json)
|
||||||
|
{
|
||||||
|
Info ("SEND: " + json);
|
||||||
|
}
|
||||||
|
|
||||||
|
public void ReceiveMessageJson (string json)
|
||||||
|
{
|
||||||
|
try {
|
||||||
|
Info ("RECEIVED: " + json);
|
||||||
|
var message = Newtonsoft.Json.JsonConvert.DeserializeObject<Message> (json);
|
||||||
|
element.Receive (message);
|
||||||
|
}
|
||||||
|
catch (Exception ex) {
|
||||||
|
Error ("Failed to process received message", ex);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public void StartSession ()
|
||||||
|
{
|
||||||
|
//
|
||||||
|
// Start watching for changes in the element
|
||||||
|
//
|
||||||
|
element.MessageSent += handleElementMessageSent;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Add it to the document body
|
||||||
|
//
|
||||||
|
if (element.WantsFullScreen) {
|
||||||
|
element.Style.Width = initialWidth;
|
||||||
|
element.Style.Height = initialHeight;
|
||||||
|
}
|
||||||
|
QueueMessage (Message.Call ("document.body", "appendChild", element));
|
||||||
|
}
|
||||||
|
|
||||||
|
public void StopSession ()
|
||||||
|
{
|
||||||
|
element.MessageSent -= handleElementMessageSent;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,205 @@
|
||||||
|
#if !PCL
|
||||||
|
|
||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
using System.IO;
|
||||||
|
using System.Linq;
|
||||||
|
using System.Text;
|
||||||
|
using System.Threading;
|
||||||
|
using System.Threading.Tasks;
|
||||||
|
using System.Net;
|
||||||
|
using System.Net.WebSockets;
|
||||||
|
|
||||||
|
namespace Ooui
|
||||||
|
{
|
||||||
|
public class WebSocketSession : Session
|
||||||
|
{
|
||||||
|
readonly WebSocket webSocket;
|
||||||
|
readonly Action<Message> handleElementMessageSent;
|
||||||
|
|
||||||
|
readonly CancellationTokenSource sessionCts = new CancellationTokenSource ();
|
||||||
|
readonly CancellationTokenSource linkedCts;
|
||||||
|
readonly CancellationToken token;
|
||||||
|
|
||||||
|
readonly System.Timers.Timer sendThrottle;
|
||||||
|
DateTime lastTransmitTime = DateTime.MinValue;
|
||||||
|
readonly TimeSpan throttleInterval = TimeSpan.FromSeconds (1.0 / UI.MaxFps);
|
||||||
|
|
||||||
|
public WebSocketSession (WebSocket webSocket, Element element, double initialWidth, double initialHeight, CancellationToken serverToken)
|
||||||
|
: base (element, initialWidth, initialHeight)
|
||||||
|
{
|
||||||
|
this.webSocket = webSocket;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Create a new session cancellation token that will trigger
|
||||||
|
// automatically if the server shutsdown or the session shutsdown.
|
||||||
|
//
|
||||||
|
linkedCts = CancellationTokenSource.CreateLinkedTokenSource (serverToken, sessionCts.Token);
|
||||||
|
token = linkedCts.Token;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Preparse handlers for the element
|
||||||
|
//
|
||||||
|
handleElementMessageSent = QueueMessage;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Create a timer to use as a throttle when sending messages
|
||||||
|
//
|
||||||
|
sendThrottle = new System.Timers.Timer (throttleInterval.TotalMilliseconds);
|
||||||
|
sendThrottle.Elapsed += (s, e) => {
|
||||||
|
// System.Console.WriteLine ("TICK SEND THROTTLE FOR {0}", element);
|
||||||
|
if ((e.SignalTime - lastTransmitTime) >= throttleInterval) {
|
||||||
|
sendThrottle.Enabled = false;
|
||||||
|
lastTransmitTime = e.SignalTime;
|
||||||
|
TransmitQueuedMessages ();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
public async Task RunAsync ()
|
||||||
|
{
|
||||||
|
//
|
||||||
|
// Start watching for changes in the element
|
||||||
|
//
|
||||||
|
element.MessageSent += handleElementMessageSent;
|
||||||
|
|
||||||
|
try {
|
||||||
|
//
|
||||||
|
// Add it to the document body
|
||||||
|
//
|
||||||
|
if (element.WantsFullScreen) {
|
||||||
|
element.Style.Width = initialWidth;
|
||||||
|
element.Style.Height = initialHeight;
|
||||||
|
}
|
||||||
|
QueueMessage (Message.Call ("document.body", "appendChild", element));
|
||||||
|
|
||||||
|
//
|
||||||
|
// Start the Read Loop
|
||||||
|
//
|
||||||
|
var receiveBuffer = new byte[64 * 1024];
|
||||||
|
|
||||||
|
while (webSocket.State == WebSocketState.Open && !token.IsCancellationRequested) {
|
||||||
|
var receiveResult = await webSocket.ReceiveAsync (new ArraySegment<byte> (receiveBuffer), token).ConfigureAwait (false);
|
||||||
|
|
||||||
|
if (receiveResult.MessageType == WebSocketMessageType.Close) {
|
||||||
|
await webSocket.CloseAsync (WebSocketCloseStatus.NormalClosure, "", token).ConfigureAwait (false);
|
||||||
|
sessionCts.Cancel ();
|
||||||
|
}
|
||||||
|
else if (receiveResult.MessageType == WebSocketMessageType.Binary) {
|
||||||
|
await webSocket.CloseAsync (WebSocketCloseStatus.InvalidMessageType, "Cannot accept binary frame", token).ConfigureAwait (false);
|
||||||
|
sessionCts.Cancel ();
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
var size = receiveResult.Count;
|
||||||
|
while (!receiveResult.EndOfMessage) {
|
||||||
|
if (size >= receiveBuffer.Length) {
|
||||||
|
await webSocket.CloseAsync (WebSocketCloseStatus.MessageTooBig, "Message too big", token).ConfigureAwait (false);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
receiveResult = await webSocket.ReceiveAsync (new ArraySegment<byte> (receiveBuffer, size, receiveBuffer.Length - size), token).ConfigureAwait (false);
|
||||||
|
size += receiveResult.Count;
|
||||||
|
}
|
||||||
|
var receivedString = Encoding.UTF8.GetString (receiveBuffer, 0, size);
|
||||||
|
|
||||||
|
try {
|
||||||
|
// Console.WriteLine ("RECEIVED: {0}", receivedString);
|
||||||
|
var message = Newtonsoft.Json.JsonConvert.DeserializeObject<Message> (receivedString);
|
||||||
|
element.Receive (message);
|
||||||
|
}
|
||||||
|
catch (Exception ex) {
|
||||||
|
Error ("Failed to process received message", ex);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
finally {
|
||||||
|
element.MessageSent -= handleElementMessageSent;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void QueueStateMessagesLocked (EventTarget target)
|
||||||
|
{
|
||||||
|
if (target == null) return;
|
||||||
|
var created = false;
|
||||||
|
foreach (var m in target.StateMessages) {
|
||||||
|
if (m.MessageType == MessageType.Create) {
|
||||||
|
createdIds.Add (m.TargetId);
|
||||||
|
created = true;
|
||||||
|
}
|
||||||
|
if (created) {
|
||||||
|
QueueMessageLocked (m);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void QueueMessageLocked (Message message)
|
||||||
|
{
|
||||||
|
//
|
||||||
|
// Make sure all the referenced objects have been created
|
||||||
|
//
|
||||||
|
if (!createdIds.Contains (message.TargetId)) {
|
||||||
|
QueueStateMessagesLocked (element.GetElementById (message.TargetId));
|
||||||
|
}
|
||||||
|
if (message.Value is EventTarget ve) {
|
||||||
|
if (!createdIds.Contains (ve.Id)) {
|
||||||
|
QueueStateMessagesLocked (ve);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (message.Value is Array a) {
|
||||||
|
for (var i = 0; i < a.Length; i++) {
|
||||||
|
// Console.WriteLine ($"A{i} = {a.GetValue(i)}");
|
||||||
|
if (a.GetValue (i) is EventTarget e && !createdIds.Contains (e.Id)) {
|
||||||
|
QueueStateMessagesLocked (e);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// Add it to the queue
|
||||||
|
//
|
||||||
|
//Console.WriteLine ($"QM {message.MessageType} {message.TargetId} {message.Key} {message.Value}");
|
||||||
|
queuedMessages.Add (message);
|
||||||
|
}
|
||||||
|
|
||||||
|
protected override void QueueMessage (Message message)
|
||||||
|
{
|
||||||
|
base.QueueMessage (message);
|
||||||
|
sendThrottle.Enabled = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
async void TransmitQueuedMessages ()
|
||||||
|
{
|
||||||
|
try {
|
||||||
|
//
|
||||||
|
// Dequeue as many messages as we can
|
||||||
|
//
|
||||||
|
var messagesToSend = new List<Message> ();
|
||||||
|
System.Runtime.CompilerServices.ConfiguredTaskAwaitable task;
|
||||||
|
lock (queuedMessages) {
|
||||||
|
messagesToSend.AddRange (queuedMessages);
|
||||||
|
queuedMessages.Clear ();
|
||||||
|
|
||||||
|
if (messagesToSend.Count == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Now actually send this message
|
||||||
|
// Do this while locked to make sure SendAsync is called in the right order
|
||||||
|
//
|
||||||
|
var json = Newtonsoft.Json.JsonConvert.SerializeObject (messagesToSend);
|
||||||
|
var outputBuffer = new ArraySegment<byte> (Encoding.UTF8.GetBytes (json));
|
||||||
|
//Console.WriteLine ("TRANSMIT " + json);
|
||||||
|
task = webSocket.SendAsync (outputBuffer, WebSocketMessageType.Text, true, token).ConfigureAwait (false);
|
||||||
|
}
|
||||||
|
await task;
|
||||||
|
}
|
||||||
|
catch (Exception ex) {
|
||||||
|
Error ("Failed to send queued messages, aborting session", ex);
|
||||||
|
element.MessageSent -= handleElementMessageSent;
|
||||||
|
sessionCts.Cancel ();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue