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Riptide/Utils/DelayedEvents.cs

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+// This file is provided under The MIT License as part of RiptideNetworking.
+// Copyright (c) Tom Weiland
+// For additional information please see the included LICENSE.md file or view it on GitHub:
+// https://github.com/RiptideNetworking/Riptide/blob/main/LICENSE.md
+
+using Riptide.Transports;
+
+namespace Riptide.Utils
+{
+    /// <summary>Executes an action when invoked.</summary>
+    internal abstract class DelayedEvent
+    {
+        /// <summary>Executes the action.</summary>
+        public abstract void Invoke();
+    }
+
+    /// <summary>Resends a <see cref="PendingMessage"/> when invoked.</summary>
+    internal class ResendEvent : DelayedEvent
+    {
+        /// <summary>The message to resend.</summary>
+        private readonly PendingMessage message;
+        /// <summary>The time at which the resend event was queued.</summary>
+        private readonly long initiatedAtTime;
+
+        /// <summary>Initializes the event.</summary>
+        /// <param name="message">The message to resend.</param>
+        /// <param name="initiatedAtTime">The time at which the resend event was queued.</param>
+        public ResendEvent(PendingMessage message, long initiatedAtTime)
+        {
+            this.message = message;
+            this.initiatedAtTime = initiatedAtTime;
+        }
+
+        /// <inheritdoc/>
+        public override void Invoke()
+        {
+            if (initiatedAtTime == message.LastSendTime) // If this isn't the case then the message has been resent already
+                message.RetrySend();
+        }
+    }
+
+    /// <summary>Executes a heartbeat when invoked.</summary>
+    internal class HeartbeatEvent : DelayedEvent
+    {
+        /// <summary>The peer whose heart to beat.</summary>
+        private readonly Peer peer;
+
+        /// <summary>Initializes the event.</summary>
+        /// <param name="peer">The peer whose heart to beat.</param>
+        public HeartbeatEvent(Peer peer)
+        {
+            this.peer = peer;
+        }
+
+        /// <inheritdoc/>
+        public override void Invoke()
+        {
+            peer.Heartbeat();
+        }
+    }
+}