deltavr multiplayer 2.0

Assets/FishNet/Runtime/Connection/NetworkConnection.PingPong.cs

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+using FishNet.Managing;
+using FishNet.Managing.Timing;
+using System;
+using UnityEngine;
+
+namespace FishNet.Connection
+{
+
+    /// <summary>
+    /// A container for a connected client used to perform actions on and gather information for the declared client.
+    /// </summary>
+    public partial class NetworkConnection : IEquatable<NetworkConnection>
+    {
+#pragma warning disable CS0414
+        #region Private.
+        /// <summary>
+        /// Last tick this connection sent a ping.
+        /// </summary>
+        private uint _lastPingTick;
+        /// <summary>
+        /// Number of times client has excessively sent a ping.
+        /// </summary>
+        private float _excessivePingCount;
+        /// <summary>
+        /// Ticks expected between each ping.
+        /// </summary>
+        private uint _requiredPingTicks;
+        #endregion
+
+        #region Const.
+        /// <summary>
+        /// Number of times a ping may occur excessively before server will punish connection.
+        /// </summary>
+        private const byte EXCESSIVE_PING_LIMIT = 10;
+        #endregion
+#pragma warning restore CS0414
+        /// <summary>
+        /// Initializes for ping.
+        /// </summary>
+        private void InitializePing()
+        {
+            //Give the client some room for error.
+            float requiredInterval = (NetworkManager.TimeManager.PingInterval * 0.85f);
+            //Round down so required ticks is lower.
+            _requiredPingTicks = NetworkManager.TimeManager.TimeToTicks(requiredInterval, TickRounding.RoundDown);
+        }
+
+
+        /// <summary>
+        /// Resets PingPong values.
+        /// </summary>
+        private void ResetPingPong()
+        {
+            _excessivePingCount = 0;
+            _lastPingTick = 0;
+        }
+
+        /// <summary>
+        /// Called when a ping is received from this connection. Returns if can respond to ping.
+        /// </summary>
+        /// <returns>True to respond to ping, false to kick connection.</returns>
+        internal bool CanPingPong()
+        {
+            /* Only check ping conditions in build. Editors are prone to pausing which can
+             * improperly kick clients. */
+#if UNITY_EDITOR
+            return true;
+#else
+            TimeManager tm = (NetworkManager == null) ? InstanceFinder.TimeManager : NetworkManager.TimeManager;
+            //Server FPS is running low, timing isn't reliable enough to kick clients.
+            if (tm.LowFrameRate)
+                return true;
+
+            uint currentTick = tm.Tick;
+            uint difference = (currentTick - _lastPingTick);
+            _lastPingTick = currentTick;
+
+            //Ping sent too quickly.
+            if (difference < _requiredPingTicks)
+            {
+                _excessivePingCount += 1f;
+                //Ping limit hit.
+                if (_excessivePingCount >= EXCESSIVE_PING_LIMIT)
+                {
+                    NetworkManager.LogWarning($"Kicked connectionId {ClientId} for excessive pings.");
+                    Disconnect(true);
+                }
+
+                //Return to not send pong back.
+                return false;
+            }
+            //Ping isnt too fast.
+            else
+            {
+                _excessivePingCount = UnityEngine.Mathf.Max(0f, _excessivePingCount - 0.5f);
+                return true;
+            }
+#endif
+        }
+    }
+
+
+}