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How to use BecomeHead method of Microsoft.Coyote.Actors.BugFinding.Tests.Ping class

Best Coyote code snippet using Microsoft.Coyote.Actors.BugFinding.Tests.Ping.BecomeHead

ChainReplicationTests.cs

Source:ChainReplicationTests.cs

...240                    this.Servers = servers;241                    this.Clients = clients;242                }243            }244            internal class BecomeHead : Event245            {246                public ActorId Target;247                public BecomeHead(ActorId target)248                    : base()249                {250                    this.Target = target;251                }252            }253            internal class BecomeTail : Event254            {255                public ActorId Target;256                public BecomeTail(ActorId target)257                    : base()258                {259                    this.Target = target;260                }261            }262            internal class Success : Event263            {264            }265            internal class HeadChanged : Event266            {267            }268            internal class TailChanged : Event269            {270            }271            private class HeadFailed : Event272            {273            }274            private class TailFailed : Event275            {276            }277            private class ServerFailed : Event278            {279            }280            private class FixSuccessor : Event281            {282            }283            private class FixPredecessor : Event284            {285            }286            private class Local : Event287            {288            }289            private class Done : Event290            {291            }292            private List<ActorId> Servers;293            private List<ActorId> Clients;294            private ActorId FailureDetector;295            private ActorId Head;296            private ActorId Tail;297            private int FaultyNodeIndex;298            private int LastUpdateReceivedSucc;299            private int LastAckSent;300            [Start]301            [OnEntry(nameof(InitOnEntry))]302            [OnEventGotoState(typeof(Local), typeof(WaitForFailure))]303            private class Init : State304            {305            }306            private void InitOnEntry(Event e)307            {308                this.Servers = (e as SetupEvent).Servers;309                this.Clients = (e as SetupEvent).Clients;310                this.FailureDetector = this.CreateActor(311                    typeof(FailureDetector),312                    new FailureDetector.SetupEvent(this.Id, this.Servers));313                this.Head = this.Servers[0];314                this.Tail = this.Servers[this.Servers.Count - 1];315                this.RaiseEvent(new Local());316            }317            [OnEventGotoState(typeof(HeadFailed), typeof(CorrectHeadFailure))]318            [OnEventGotoState(typeof(TailFailed), typeof(CorrectTailFailure))]319            [OnEventGotoState(typeof(ServerFailed), typeof(CorrectServerFailure))]320            [OnEventDoAction(typeof(FailureDetector.FailureDetected), nameof(CheckWhichNodeFailed))]321            private class WaitForFailure : State322            {323            }324            private void CheckWhichNodeFailed(Event e)325            {326                this.Assert(this.Servers.Count > 1, "All nodes have failed.");327                var failedServer = (e as FailureDetector.FailureDetected).Server;328                if (this.Head.Equals(failedServer))329                {330                    this.RaiseEvent(new HeadFailed());331                }332                else if (this.Tail.Equals(failedServer))333                {334                    this.RaiseEvent(new TailFailed());335                }336                else337                {338                    for (int i = 0; i < this.Servers.Count - 1; i++)339                    {340                        if (this.Servers[i].Equals(failedServer))341                        {342                            this.FaultyNodeIndex = i;343                        }344                    }345                    this.RaiseEvent(new ServerFailed());346                }347            }348            [OnEntry(nameof(CorrectHeadFailureOnEntry))]349            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]350            [OnEventDoAction(typeof(HeadChanged), nameof(UpdateClients))]351            private class CorrectHeadFailure : State352            {353            }354            private void CorrectHeadFailureOnEntry()355            {356                this.Servers.RemoveAt(0);357                this.Monitor<InvariantMonitor>(358                    new InvariantMonitor.UpdateServers(this.Servers));359                this.Monitor<ServerResponseSeqMonitor>(360                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));361                this.Head = this.Servers[0];362                this.SendEvent(this.Head, new BecomeHead(this.Id));363            }364            private void UpdateClients()365            {366                for (int i = 0; i < this.Clients.Count; i++)367                {368                    this.SendEvent(this.Clients[i], new Client.UpdateHeadTail(this.Head, this.Tail));369                }370                this.RaiseEvent(new Done());371            }372            private void UpdateFailureDetector()373            {374                this.SendEvent(this.FailureDetector, new FailureDetector.FailureCorrected(this.Servers));375            }376            [OnEntry(nameof(CorrectTailFailureOnEntry))]377            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]378            [OnEventDoAction(typeof(TailChanged), nameof(UpdateClients))]379            private class CorrectTailFailure : State380            {381            }382            private void CorrectTailFailureOnEntry()383            {384                this.Servers.RemoveAt(this.Servers.Count - 1);385                this.Monitor<InvariantMonitor>(386                    new InvariantMonitor.UpdateServers(this.Servers));387                this.Monitor<ServerResponseSeqMonitor>(388                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));389                this.Tail = this.Servers[this.Servers.Count - 1];390                this.SendEvent(this.Tail, new BecomeTail(this.Id));391            }392            [OnEntry(nameof(CorrectServerFailureOnEntry))]393            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]394            [OnEventDoAction(typeof(FixSuccessor), nameof(UpdateClients))]395            [OnEventDoAction(typeof(FixPredecessor), nameof(ProcessFixPredecessor))]396            [OnEventDoAction(typeof(ChainReplicationServer.NewSuccInfo), nameof(SetLastUpdate))]397            [OnEventDoAction(typeof(Success), nameof(ProcessSuccess))]398            private class CorrectServerFailure : State399            {400            }401            private void CorrectServerFailureOnEntry()402            {403                this.Servers.RemoveAt(this.FaultyNodeIndex);404                this.Monitor<InvariantMonitor>(405                    new InvariantMonitor.UpdateServers(this.Servers));406                this.Monitor<ServerResponseSeqMonitor>(407                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));408                this.RaiseEvent(new FixSuccessor());409            }410            private void ProcessFixPredecessor()411            {412                this.SendEvent(this.Servers[this.FaultyNodeIndex - 1], new ChainReplicationServer.NewSuccessor(413                    this.Id, this.Servers[this.FaultyNodeIndex], this.LastAckSent, this.LastUpdateReceivedSucc));414            }415            private void SetLastUpdate(Event e)416            {417                this.LastUpdateReceivedSucc = (e as418                    ChainReplicationServer.NewSuccInfo).LastUpdateReceivedSucc;419                this.LastAckSent = (e as420                    ChainReplicationServer.NewSuccInfo).LastAckSent;421                this.RaiseEvent(new FixPredecessor());422            }423            private void ProcessSuccess() => this.RaiseEvent(new Done());424        }425        private class ChainReplicationServer : StateMachine426        {427            internal class SetupEvent : Event428            {429                public int Id;430                public bool IsHead;431                public bool IsTail;432                public SetupEvent(int id, bool isHead, bool isTail)433                    : base()434                {435                    this.Id = id;436                    this.IsHead = isHead;437                    this.IsTail = isTail;438                }439            }440            internal class PredSucc : Event441            {442                public ActorId Predecessor;443                public ActorId Successor;444                public PredSucc(ActorId pred, ActorId succ)445                    : base()446                {447                    this.Predecessor = pred;448                    this.Successor = succ;449                }450            }451            internal class ForwardUpdate : Event452            {453                public ActorId Predecessor;454                public int NextSeqId;455                public ActorId Client;456                public int Key;457                public int Value;458                public ForwardUpdate(ActorId pred, int nextSeqId, ActorId client, int key, int val)459                    : base()460                {461                    this.Predecessor = pred;462                    this.NextSeqId = nextSeqId;463                    this.Client = client;464                    this.Key = key;465                    this.Value = val;466                }467            }468            internal class BackwardAck : Event469            {470                public int NextSeqId;471                public BackwardAck(int nextSeqId)472                    : base()473                {474                    this.NextSeqId = nextSeqId;475                }476            }477            internal class NewPredecessor : Event478            {479                public ActorId Main;480                public ActorId Predecessor;481                public NewPredecessor(ActorId main, ActorId pred)482                    : base()483                {484                    this.Main = main;485                    this.Predecessor = pred;486                }487            }488            internal class NewSuccessor : Event489            {490                public ActorId Main;491                public ActorId Successor;492                public int LastUpdateReceivedSucc;493                public int LastAckSent;494                public NewSuccessor(ActorId main, ActorId succ,495                    int lastUpdateReceivedSucc, int lastAckSent)496                    : base()497                {498                    this.Main = main;499                    this.Successor = succ;500                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;501                    this.LastAckSent = lastAckSent;502                }503            }504            internal class NewSuccInfo : Event505            {506                public int LastUpdateReceivedSucc;507                public int LastAckSent;508                public NewSuccInfo(int lastUpdateReceivedSucc, int lastAckSent)509                    : base()510                {511                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;512                    this.LastAckSent = lastAckSent;513                }514            }515            internal class ResponseToQuery : Event516            {517                public int Value;518                public ResponseToQuery(int val)519                    : base()520                {521                    this.Value = val;522                }523            }524            internal class ResponseToUpdate : Event525            {526            }527            private class Local : Event528            {529            }530            private int ServerId;531            private bool IsHead;532            private bool IsTail;533            private ActorId Predecessor;534            private ActorId Successor;535            private Dictionary<int, int> KeyValueStore;536            private List<int> History;537            private List<SentLog> SentHistory;538            private int NextSeqId;539            [Start]540            [OnEntry(nameof(InitOnEntry))]541            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]542            [OnEventDoAction(typeof(PredSucc), nameof(SetupPredSucc))]543            [DeferEvents(typeof(Client.Update), typeof(Client.Query),544                typeof(BackwardAck), typeof(ForwardUpdate))]545            private class Init : State546            {547            }548            private void InitOnEntry(Event e)549            {550                this.ServerId = (e as SetupEvent).Id;551                this.IsHead = (e as SetupEvent).IsHead;552                this.IsTail = (e as SetupEvent).IsTail;553                this.KeyValueStore = new Dictionary<int, int>();554                this.History = new List<int>();555                this.SentHistory = new List<SentLog>();556                this.NextSeqId = 0;557            }558            private void SetupPredSucc(Event e)559            {560                this.Predecessor = (e as PredSucc).Predecessor;561                this.Successor = (e as PredSucc).Successor;562                this.RaiseEvent(new Local());563            }564            [OnEventGotoState(typeof(Client.Update), typeof(ProcessUpdate), nameof(ProcessUpdateAction))]565            [OnEventGotoState(typeof(ForwardUpdate), typeof(ProcessFwdUpdate))]566            [OnEventGotoState(typeof(BackwardAck), typeof(ProcessBckAck))]567            [OnEventDoAction(typeof(Client.Query), nameof(ProcessQueryAction))]568            [OnEventDoAction(typeof(NewPredecessor), nameof(UpdatePredecessor))]569            [OnEventDoAction(typeof(NewSuccessor), nameof(UpdateSuccessor))]570            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeHead), nameof(ProcessBecomeHead))]571            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeTail), nameof(ProcessBecomeTail))]572            [OnEventDoAction(typeof(FailureDetector.Ping), nameof(SendPong))]573            private class WaitForRequest : State574            {575            }576            private void ProcessUpdateAction()577            {578                this.NextSeqId++;579                this.Assert(this.IsHead, "Server {0} is not head", this.ServerId);580            }581            private void ProcessQueryAction(Event e)582            {583                var client = (e as Client.Query).Client;584                var key = (e as Client.Query).Key;585                this.Assert(this.IsTail, "Server {0} is not tail", this.Id);586                if (this.KeyValueStore.ContainsKey(key))587                {588                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToQuery(589                        this.Id, key, this.KeyValueStore[key]));590                    this.SendEvent(client, new ResponseToQuery(this.KeyValueStore[key]));591                }592                else593                {594                    this.SendEvent(client, new ResponseToQuery(-1));595                }596            }597            private void ProcessBecomeHead(Event e)598            {599                this.IsHead = true;600                this.Predecessor = this.Id;601                var target = (e as ChainReplicationMaster.BecomeHead).Target;602                this.SendEvent(target, new ChainReplicationMaster.HeadChanged());603            }604            private void ProcessBecomeTail(Event e)605            {606                this.IsTail = true;607                this.Successor = this.Id;608                for (int i = 0; i < this.SentHistory.Count; i++)609                {610                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToUpdate(611                        this.Id, this.SentHistory[i].Key, this.SentHistory[i].Value));612                    this.SendEvent(this.SentHistory[i].Client, new ResponseToUpdate());613                    this.SendEvent(this.Predecessor, new BackwardAck(this.SentHistory[i].NextSeqId));614                }615                var target = (e as ChainReplicationMaster.BecomeTail).Target;...

BecomeHead

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6{7    {8        static async Task Main(string[] args)9        {10            var config = Configuration.Create();11            config.MaxSchedulingSteps = 1000;12            config.MaxFairSchedulingSteps = 1000;13            config.MaxUnfairSchedulingSteps = 1000;14            config.MaxStepsFromBugFinding = 1000;15            config.MaxFairStepsFromBugFinding = 1000;16            config.MaxUnfairStepsFromBugFinding = 1000;17            config.MaxInterleavings = 1000;18            config.MaxFairInterleavings = 1000;19            config.MaxUnfairInterleavings = 1000;20            config.MaxProgramSteps = 1000;21            config.MaxFairProgramSteps = 1000;22            config.MaxUnfairProgramSteps = 1000;23            config.MaxAsynchronousSteps = 1000;24            config.MaxFairAsynchronousSteps = 1000;25            config.MaxUnfairAsynchronousSteps = 1000;26            config.MaxStepsFromRandomExploration = 1000;27            config.MaxFairStepsFromRandomExploration = 1000;28            config.MaxUnfairStepsFromRandomExploration = 1000;29            config.EnableCycleDetection = true;30            config.EnableDataRaceDetection = true;31            config.EnableDeadlockDetection = true;32            config.EnableLivelockDetection = true;33            config.EnableOperationCanceledException = true;34            config.EnableObjectDisposedException = true;35            config.EnableIndexOutOfRangeException = true;36            config.EnableNullReferenceException = true;37            config.EnableDivideByZeroException = true;38            config.EnableActorDeadlockDetection = true;39            config.EnableStateGraph = true;40            config.EnableActorStateGraph = true;41            config.EnableStateGraphScheduling = true;42            config.EnableActorStateGraphScheduling = true;43            config.EnableHotStateDetection = true;44            config.EnableHotStateDetectionInActors = true;45            config.EnableHotStateDetectionInControlledActors = true;46            config.EnableHotStateDetectionInMonitors = true;47            config.EnableHotStateDetectionInControlledMonitors = true;48            config.EnableHotStateDetectionInTasks = true;

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2{3    {4    }5    {6    }7    {8    }9    {10        {11            protected override void OnEntry()12            {13                Become(new Tail(this.Actor));14            }15        }16        {17            public Tail(Actor actor)18            {19                this.Actor = actor;20            }21            protected override void OnEntry()22            {23                Become(new Head(this.Actor));24            }25        }26        protected override void OnInitialize(Event initialEvent)27        {28            this.Become(new Head(this));29        }30        protected override void OnReceive(Event e)31        {32            if (e is BecomeHeadEvent)33            {34                Become(new Head(this));35            }36            else if (e is BecomeTailEvent)37            {38                Become(new Tail(this));39            }40            else if (e is MoveEvent)41            {42                this.Send(this.Id, new MoveEvent());43            }44        }45    }46}47using Microsoft.Coyote;48using Microsoft.Coyote.Actors;49using Microsoft.Coyote.Testing;50using System;51using System.Collections.Generic;52using System.Linq;53using System.Text;54using System.Threading.Tasks;55{56    {57        {58            {59                protected override bool IsFairScheduler => true;60                protected override bool IsReplayEnabled => true;61                protected override int MaxSchedulingSteps => 1000;62                protected override IEnumerable<ISchedulable> GetOperations(ISchedulingStrategy strategy)63                {64                    return base.GetOperations(strategy).Concat(new ISchedulable[]65                    {66                        new BecomeHeadEvent(),67                        new BecomeTailEvent(),68                        new MoveEvent()69                    });70                }

BecomeHead

Using AI Code Generation

1    using System;2    using System.Threading.Tasks;3    using Microsoft.Coyote.Actors;4    using Microsoft.Coyote.Actors.BugFinding.Tests;5    {6        {7            private ActorId pong;8            protected override async Task OnInitializeAsync(Event initialEvent)9            {10                this.pong = (initialEvent as PingEvent).Pong;11                this.SendEvent(this.pong, new PingEvent(this.Id));12            }13            protected override Task OnEventAsync(Event e)14            {15                if (e is PingEvent)16                {17                    this.SendEvent(this.pong, new PingEvent(this.Id));18                }19                else if (e is PongEvent)20                {21                    BecomeHead();22                }23                return Task.CompletedTask;24            }25        }26    }27    {28        {29            private ActorId ping;30            protected override async Task OnInitializeAsync(Event initialEvent)31            {32                this.ping = (initialEvent as PongEvent).Ping;33                this.SendEvent(this.ping, new PongEvent(this.Id));34            }35            protected override Task OnEventAsync(Event e)36            {37                if (e is PongEvent)38                {39                    this.SendEvent(this.ping, new PongEvent(this.Id));40                }41                return Task.CompletedTask;42            }43        }44    }45    {46        {47        }48    }49    {50        {51            public PingEvent(ActorId pong)52            {53                this.Pong = pong;54            }55            public ActorId Pong { get; private set; }56        }57    }58    {59        {60            public PongEvent(ActorId ping)61            {62                this.Ping = ping;63            }64            public ActorId Ping { get; private set; }65        }66    }67    {68        {69        }70    }

BecomeHead

Using AI Code Generation

1using Microsoft.Coyote.Actors;2using Microsoft.Coyote.Actors.BugFinding.Tests;3using System;4using System.Threading.Tasks;5{6    {7        static void Main(string[] args)8        {9            var runtime = RuntimeFactory.Create();10            runtime.RegisterMonitor(typeof(PingMonitor));11            runtime.CreateActor(typeof(Ping), new Ping.PingConfig());12            runtime.Wait();13        }14    }15}16[pingpong.zip](

BecomeHead

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote.Actors;4using Microsoft.Coyote.Actors.BugFinding.Tests;5{6    {7        static void Main(string[] args)8        {9            var runtime = RuntimeFactory.Create();10            runtime.CreateActor(typeof(Ping));11            Console.WriteLine("Hello World!");12        }13    }14}

BecomeHead

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6{7    {8        private Event PongEvent;9        protected override Task OnInitializeAsync(Event initialEvent)10        {11            this.PongEvent = new Event();12            return Task.CompletedTask;13        }14        protected override Task OnEventAsync(Event e)15        {16            if (e is PingEvent)17            {18                Console.WriteLine("Ping");19                this.SendEvent(this.Id, this.PongEvent);20            }21            else if (e is BecomeHeadEvent)22            {23                BecomeHead();24            }25            return Task.CompletedTask;26        }27        private void BecomeHead()28        {29            Console.WriteLine("BecomeHead");30            this.BecomeHead(this.PongEvent);31        }32    }33}34using System;35using System.Threading.Tasks;36using Microsoft.Coyote;37using Microsoft.Coyote.Actors;38using Microsoft.Coyote.Actors.BugFinding.Tests;39{40    {41        private Event PingEvent;42        protected override Task OnInitializeAsync(Event initialEvent)43        {44            this.PingEvent = new Event();45            return Task.CompletedTask;46        }47        protected override Task OnEventAsync(Event e)48        {49            if (e is PongEvent)50            {51                Console.WriteLine("Pong");52                this.SendEvent(this.Id, this.PingEvent);53            }54            else if (e is BecomeHeadEvent)55            {56                BecomeHead();57            }58            return Task.CompletedTask;59        }60        private void BecomeHead()61        {62            Console.WriteLine("BecomeHead");63            this.BecomeHead(this.PingEvent);64        }65    }66}67using System;68using System.Threading.Tasks;69using Microsoft.Coyote;70using Microsoft.Coyote.Actors;71using Microsoft.Coyote.Actors.BugFinding.Tests;72{73    {74        private Event PingEvent;75        protected override Task OnInitializeAsync(Event initialEvent)

BecomeHead

Using AI Code Generation

1using System;2using Microsoft.Coyote.Actors;3{4    {5        static void Main(string[] args)6        {7            var runtime = RuntimeFactory.Create();8            var ping = runtime.CreateActor(typeof(Ping));9            ping.SendEvent(new BecomeHead());10        }11    }12}13using System;14using Microsoft.Coyote.Actors;15{16    {17        static void Main(string[] args)18        {19            var runtime = RuntimeFactory.Create();20            var ping = runtime.CreateActor(typeof(Ping));21            ping.SendEvent(new BecomeHead());22        }23    }24}25using System;26using Microsoft.Coyote.Actors;27{28    {29        static void Main(string[] args)30        {31            var runtime = RuntimeFactory.Create();32            var ping = runtime.CreateActor(typeof(Ping));33            ping.SendEvent(new BecomeHead());34        }35    }36}37using System;38using Microsoft.Coyote.Actors;39{40    {41        static void Main(string[] args)42        {43            var runtime = RuntimeFactory.Create();44            var ping = runtime.CreateActor(typeof(Ping));45            ping.SendEvent(new BecomeHead());46        }47    }48}49using System;50using Microsoft.Coyote.Actors;51{52    {53        static void Main(string[] args)54        {55            var runtime = RuntimeFactory.Create();56            var ping = runtime.CreateActor(typeof(Ping));57            ping.SendEvent(new BecomeHead());58        }59    }60}61using System;62using Microsoft.Coyote.Actors;63{64    {65        static void Main(string

BecomeHead

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6using Microsoft.Coyote.Specifications;7using Microsoft.Coyote.Tasks;8using Microsoft.Coyote.TestingServices;9using Microsoft.Coyote.TestingServices.Coverage;10using Microsoft.Coyote.TestingServices.SchedulingStrategies;11using Microsoft.Coyote.TestingServices.Tracing.Schedule;12using Microsoft.Coyote.TestingServices.Tracing.Schedule;13using Microsoft.Coyote.TestingServices.Tracing.Schedule;14using Microsoft.Coyote.TestingServices.Tracing.Schedule;15{16    {17        private readonly int id;18        private readonly int numPings;19        private readonly ActorId pong;20        private int count;21        public Ping(int id, int numPings, ActorId pong)22        {23            this.id = id;24            this.numPings = numPings;25            this.pong = pong;26            this.count = 0;27        }28        protected override async Task OnInitializeAsync(Event initialEvent)29        {30            if (this.id == 1)31            {32                this.SendEvent(this.pong, new PingEvent(this.id));33            }34        }35        protected override async Task OnEventAsync(Event e)36        {37            if (e is PingEvent ping)38            {39                this.count++;40                this.SendEvent(this.pong, new PingEvent(this.id));41                if (this.count == this.numPings)42                {43                    this.BecomeHead();44                }45            }46        }47    }48    {49        private readonly int id;50        private readonly int numPings;51        private int count;52        public Pong(int id, int numPings)53        {54            this.id = id;55            this.numPings = numPings;56            this.count = 0;57        }58        protected override async Task OnEventAsync(Event e)59        {60            if (e is PingEvent ping)61            {62                this.count++;63                this.SendEvent(ping.Pid, new PongEvent(this.id));64                if (this.count == this.numPings)65                {66                    this.BecomeHead();67                }68            }69        }70    }

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