Merge branch 'myChanges' into sovereignrealm

This commit is contained in:
WarrentyExpired 2026-09-02 10:17:35 -04:00
commit 2f81086157
43 changed files with 2093 additions and 418 deletions

View file

@ -50,9 +50,6 @@ public static class MovementThrottle
private const int ClientMaxUnackedMovements = 5;
private const int MaxQueueWithUnmodifiedClient = ClientMaxUnackedMovements - 1; // 4
// Debug logging - enable for testing speed hack detection
private static bool _debugLogging = false;
// Track NetStates with queued movements for efficient processing
private static readonly HashSet<NetState> _netStatesWithQueuedMovements = new(256);
@ -83,15 +80,9 @@ public static class MovementThrottle
public static void Configure()
{
_maxCredit = ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.maxCredit",
_maxCredit
);
_hardQueueLimit = ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.hardQueueLimit",
_hardQueueLimit
);
_maxCredit = ServerConfiguration.GetOrUpdateSetting("movementThrottle.maxCredit", _maxCredit);
_maxRttBonus = ServerConfiguration.GetOrUpdateSetting("movementThrottle.maxRttBonus", _maxRttBonus);
_hardQueueLimit = ServerConfiguration.GetOrUpdateSetting("movementThrottle.hardQueueLimit", _hardQueueLimit);
_movementHistorySize = ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.movementHistorySize",
@ -103,6 +94,13 @@ public static class MovementThrottle
_minSamplesForRate
);
_maxChainGap = ServerConfiguration.GetOrUpdateSetting("movementThrottle.maxChainGap", _maxChainGap);
_speedHackNotificationCooldown = ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.speedHackNotificationCooldown",
_speedHackNotificationCooldown
);
_suspiciousRateThreshold = (float)ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.suspiciousRateThreshold",
_suspiciousRateThreshold
@ -112,11 +110,6 @@ public static class MovementThrottle
"movementThrottle.definiteRateThreshold",
_definiteRateThreshold
);
_debugLogging = ServerConfiguration.GetOrUpdateSetting(
"movementThrottle.debugLogging",
_debugLogging
);
}
/// <summary>
@ -191,15 +184,16 @@ public static class MovementThrottle
// Credit can go negative up to -dynamicCredit (debt limit)
if (ns._movementCredit - earlyAmount >= -dynamicCredit)
{
var prevCredit = ns._movementCredit;
// Use credit to cover early arrival
ns._movementCredit -= earlyAmount;
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
var prevCredit = ns._movementCredit + earlyAmount;
logger.Debug(
"[Credit] {Name}: delta={Delta}ms early={Early}ms credit={PrevCredit}->{Credit}/{MaxCredit} action=execute",
mobile.RawName, delta, earlyAmount, prevCredit, ns._movementCredit, dynamicCredit
mobile, delta, earlyAmount, prevCredit, ns._movementCredit, dynamicCredit
);
}
@ -208,11 +202,11 @@ public static class MovementThrottle
return;
}
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
logger.Debug(
"[Credit] {Name}: delta={Delta}ms early={Early}ms credit={Credit}/{MaxCredit} EXHAUSTED -> queue",
mobile.RawName, delta, earlyAmount, ns._movementCredit, dynamicCredit
mobile, delta, earlyAmount, ns._movementCredit, dynamicCredit
);
}
@ -227,11 +221,11 @@ public static class MovementThrottle
var prevCredit = ns._movementCredit;
ns._movementCredit = Math.Min(ns._movementCredit + delta, dynamicCredit);
if (_debugLogging && ns._movementLogging && ns._movementCredit != prevCredit)
if (ns._movementLogging && ns._movementCredit != prevCredit)
{
logger.Debug(
"[Credit] {Name}: delta=+{Delta}ms credit={PrevCredit}->{Credit}/{MaxCredit} action=execute",
mobile.RawName, delta, prevCredit, ns._movementCredit, dynamicCredit
mobile, delta, prevCredit, ns._movementCredit, dynamicCredit
);
}
}
@ -247,12 +241,9 @@ public static class MovementThrottle
{
if (!mobile.Move(dir))
{
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
logger.Debug(
"[Execute] {Name}: Move FAILED dir={Dir} seq={Seq} -> reject+reset",
mobile.RawName, dir, seq
);
logger.Debug("[Execute] {Name}: Move FAILED dir={Dir} seq={Seq} -> reject+reset", mobile, dir, seq);
}
// Movement failed (blocked, paralyzed, frozen, etc.)
@ -260,11 +251,11 @@ public static class MovementThrottle
return;
}
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
logger.Debug(
"[Execute] {Name}: Move OK dir={Dir} seq={Seq} nextMove={NextMove}ms",
mobile.RawName, dir, seq, ns._nextMovementTime - Core.TickCount
mobile, dir, seq, ns._nextMovementTime - Core.TickCount
);
}
@ -304,11 +295,11 @@ public static class MovementThrottle
ns._hasQueuedMovements = true;
_netStatesWithQueuedMovements.Add(ns);
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
logger.Debug(
"[Queue] {Name}: enqueued dir={Dir} seq={Seq} (depth={Depth})",
ns.Mobile?.RawName, dir, seq, ns._movementQueue.Count
ns.Mobile, dir, seq, ns._movementQueue.Count
);
}
}
@ -320,7 +311,6 @@ public static class MovementThrottle
{
ns.SendMovementRej(seq, mobile);
ns.ResetMovementState();
_netStatesWithQueuedMovements.Remove(ns);
}
/// <summary>
@ -333,20 +323,18 @@ public static class MovementThrottle
return;
}
// Process each NetState with queued movements
// Use a snapshot to avoid modification during iteration
var toProcess = new List<NetState>(_netStatesWithQueuedMovements);
for (var i = 0; i < toProcess.Count; i++)
foreach (var ns in _netStatesWithQueuedMovements)
{
var ns = toProcess[i];
if (!ns.Running)
if (ns.Running)
{
_netStatesWithQueuedMovements.Remove(ns);
continue;
ProcessMovementQueue(ns);
if (ns._hasQueuedMovements)
{
continue;
}
}
ProcessMovementQueue(ns);
_netStatesWithQueuedMovements.Remove(ns);
}
}
@ -356,6 +344,7 @@ public static class MovementThrottle
public static void ProcessMovementQueue(NetState ns)
{
var mobile = ns.Mobile;
if (mobile?.Deleted != false)
{
ClearQueue(ns);
@ -374,7 +363,7 @@ public static class MovementThrottle
while (ns._movementQueue?.Count > 0)
{
// Check if it's time to execute
if (now < ns._nextMovementTime)
if (now - ns._nextMovementTime < 0)
{
// Not yet - leave remaining items in queue for next Slice
break;
@ -394,11 +383,11 @@ public static class MovementThrottle
// Execute the move
if (!mobile.Move(movement.Direction))
{
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
logger.Debug(
"[Queue] {Name}: dequeued FAILED dir={Dir} (remaining={Remaining})",
mobile.RawName, movement.Direction, remaining
mobile, movement.Direction, remaining
);
}
@ -407,12 +396,12 @@ public static class MovementThrottle
return;
}
if (_debugLogging && ns._movementLogging)
if (ns._movementLogging)
{
var waited = now - ns._nextMovementTime;
logger.Debug(
"[Queue] {Name}: dequeued OK dir={Dir} (remaining={Remaining}, waited={Waited}ms)",
mobile.RawName, movement.Direction, remaining, waited >= 0 ? waited : 0
mobile, movement.Direction, remaining, waited >= 0 ? waited : 0
);
}
@ -430,10 +419,6 @@ public static class MovementThrottle
// Update tracking
ns._hasQueuedMovements = ns._movementQueue?.Count > 0;
if (!ns._hasQueuedMovements)
{
_netStatesWithQueuedMovements.Remove(ns);
}
}
/// <summary>
@ -469,7 +454,6 @@ public static class MovementThrottle
{
ns._movementQueue?.Clear();
ns._hasQueuedMovements = false;
_netStatesWithQueuedMovements.Remove(ns);
}
// Maximum expected packets per second (mounted running = 100ms = 10/sec, plus tolerance)
@ -484,7 +468,7 @@ public static class MovementThrottle
logger.Information(
"Movement queue overflow: {Character} ({Account}) | " +
"Queue reached hard limit: {Limit} | IP: {IP}",
mobile?.RawName ?? "Unknown",
mobile,
ns.Account?.Username ?? "Unknown",
_hardQueueLimit,
ns.Address
@ -516,7 +500,7 @@ public static class MovementThrottle
private static void RecordMovement(NetState ns, long now, int cost, Direction dir, Mobile mobile)
{
// Calculate interval since last movement
var interval = ns._lastMovementRecordTime > 0
var interval = ns._hasMovementRecord
? (int)(now - ns._lastMovementRecordTime)
: -1; // -1 indicates first movement (no previous time)
@ -525,6 +509,7 @@ public static class MovementThrottle
if (interval <= 0 || interval > _maxChainGap)
{
ns._lastMovementRecordTime = now;
ns._hasMovementRecord = true;
// Use RTT to distinguish "stopped moving" vs "lagged"
// - Stable low-latency connection with gap >> RTT → player stopped, reset history
@ -544,19 +529,19 @@ public static class MovementThrottle
// A large gap followed by a burst of packets = likely lag recovery, not speed hack
ns._lastGapDuration = interval;
if (_debugLogging && mobile?.RawName != null)
if (ns._movementLogging)
{
var action = shouldReset ? "history reset" : "history preserved (possible lag)";
logger.Debug(
"[Movement] {Name}: SKIP recording (gap {Gap}ms > {MaxGap}ms, " +
"RTT={RTT}ms stable={Stable} → {Action})",
mobile.RawName, interval, _maxChainGap, avgRtt, ns.HasStableConnection, action
mobile, interval, _maxChainGap, avgRtt, ns.HasStableConnection, action
);
}
}
else if (_debugLogging && mobile?.RawName != null)
else if (ns._movementLogging)
{
logger.Debug("[Movement] {Name}: SKIP recording (first in chain)", mobile.RawName);
logger.Debug("[Movement] {Name}: SKIP recording (first in chain)", mobile);
}
return;
@ -572,12 +557,9 @@ public static class MovementThrottle
// the next real move's interval artificially short, inflating rate.
if (cost == 0)
{
if (_debugLogging && mobile?.RawName != null)
if (ns._movementLogging)
{
logger.Debug(
"[Movement] {Name}: SKIP direction-only change (preserves interval measurement)",
mobile.RawName
);
logger.Debug("[Movement] {Name}: SKIP direction-only change (preserves interval measurement)", mobile);
}
return;
}
@ -613,15 +595,16 @@ public static class MovementThrottle
}
ns._lastMovementRecordTime = now;
ns._hasMovementRecord = true;
// Debug logging
if (_debugLogging && mobile?.RawName != null)
if (ns._movementLogging)
{
var historyCount = ns._movementHistoryFull ? _movementHistorySize : ns._movementHistoryIndex;
logger.Debug(
"[Movement] {Name}: interval={Interval}ms target={Target}ms queue={Queue} " +
"flags={Flags} history={History}/{MaxHistory} RTT={RTT}ms",
mobile.RawName, interval, cost, record.QueueDepth,
mobile, interval, cost, record.QueueDepth,
flags, historyCount, _movementHistorySize, ns.AverageRtt
);
}
@ -814,7 +797,7 @@ public static class MovementThrottle
var averageRtt = ns.AverageRtt;
// Detailed rate breakdown for debugging
if (_debugLogging)
if (ns._movementLogging)
{
logger.Debug("[MovementAnalysis] Rate={Rate:F3}, Samples={Samples}, RTT={RTT}ms",
rate, sampleCount, averageRtt);
@ -977,19 +960,19 @@ public static class MovementThrottle
var verdict = AnalyzeMovement(ns, out var rate, out var sampleCount, out var confidence);
// Debug logging
if (_debugLogging && ns.Mobile?.RawName != null)
if (ns._movementLogging)
{
var (burstSize, _) = DetectRecentBurst(ns);
var probeStatus = ns._rttProbeTime > 0 ? "pending" : "idle";
var probeStatus = ns._rttProbePending ? "pending" : "idle";
var queueDepth = ns._movementQueue?.Count ?? 0;
logger.Debug(
"[RateCheck] {Name}: rate={Rate:F3} samples={Samples} verdict={Verdict} " +
"confidence={Confidence:P0} queue={Queue} burst={Burst} sustained={Sustained}s",
ns.Mobile.RawName, rate, sampleCount, verdict, confidence, queueDepth, burstSize, ns._consecutiveHighRateSeconds
ns.Mobile, rate, sampleCount, verdict, confidence, queueDepth, burstSize, ns._consecutiveHighRateSeconds
);
logger.Debug(
" RTT: avg={Avg}ms last={Last}ms var={Var} samples={RttSamples} stable={Stable} probe={Probe}",
ns.AverageRtt, ns._lastRtt, ns._rttVariance, ns._rttSampleCount, ns.HasStableConnection, probeStatus
ns.AverageRtt, ns.LastRtt, ns._rttVariance, ns._rttSampleCount, ns.HasStableConnection, probeStatus
);
}
@ -1025,11 +1008,11 @@ public static class MovementThrottle
if (shouldNotify)
{
if (_debugLogging)
if (ns._movementLogging)
{
logger.Debug(
"[ALERT] {Urgency} - {Name}: rate={Rate:F3} verdict={Verdict} confidence={Confidence:P0}",
urgency, ns.Mobile?.RawName, rate, verdict, confidence
urgency, ns.Mobile, rate, verdict, confidence
);
}
NotifyStaff(ns, rate, sampleCount, confidence, verdict, urgency);
@ -1054,11 +1037,12 @@ public static class MovementThrottle
var now = Core.TickCount;
// Rate-limit notifications per player
if (now - ns._lastSpeedHackNotification < _speedHackNotificationCooldown)
if (ns._speedHackNotified && now - ns._lastSpeedHackNotification < _speedHackNotificationCooldown)
{
return;
}
ns._speedHackNotified = true;
ns._lastSpeedHackNotification = now;
var mobile = ns.Mobile;
@ -1070,7 +1054,7 @@ public static class MovementThrottle
"PacketRate: {PacketRate}/s (peak: {PeakRate}/s) | RTT: {Rtt}ms (stable: {Stable}) | " +
"Sustained: {Sustained}s | Queue: {Queue} | Location: {Location} Map: {Map} | IP: {IP}",
urgency,
mobile?.RawName ?? "Unknown",
mobile,
ns.Account?.Username ?? "Unknown",
rate,
sampleCount,
@ -1138,7 +1122,7 @@ public static class MovementThrottle
Verdict = verdict,
Confidence = confidence,
AverageRtt = ns.AverageRtt,
LastRtt = ns._lastRtt,
LastRtt = ns.LastRtt,
RttVariance = ns._rttVariance,
StableConnection = ns.HasStableConnection,
RttSampleCount = ns._rttSampleCount,

View file

@ -15,7 +15,6 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.InteropServices;
using Server.Logging;
@ -70,23 +69,24 @@ public partial class NetState
internal Queue<QueuedMovement> _movementQueue; // Lazy initialized
internal long _movementCredit; // Credit buffer for timing jitter
internal long _nextMovementTime = Core.TickCount; // When next movement is allowed
internal int _sustainedQueueDepth; // Tracks sustained high queue depth
internal long _lastQueueDepthCheck; // Throttle depth check frequency
internal long _lastQueueDepthCheck = Core.TickCount; // Throttle depth check frequency
internal bool _hasQueuedMovements; // Fast check for Slice()
// Movement history for rate-based speed hack detection (lazy initialized)
internal MovementRecord[] _movementHistory; // Circular buffer
internal int _movementHistoryIndex; // Next write position (also serves as count until full)
internal bool _movementHistoryFull; // True once buffer has wrapped
internal long _lastMovementRecordTime; // For calculating intervals
internal long _lastMovementRecordTime; // For calculating intervals (valid only when _hasMovementRecord)
internal bool _hasMovementRecord; // False until the first movement in a chain is seen
// Detection state
internal int _consecutiveHighRateSeconds; // Sustained detection counter
internal long _lastSpeedHackNotification; // Rate-limit notifications
internal long _lastSpeedHackNotification; // Rate-limit notifications (valid only when _speedHackNotified)
internal bool _speedHackNotified; // False until the first notification is sent
internal int _lastGapDuration; // Duration of last gap > maxChainGap (for burst forgiveness)
// Movement packet rate tracking (for speed hack detection)
internal long _movementWindowStart; // Start of current 1-second window
internal long _movementWindowStart = Core.TickCount; // Start of current 1-second window
internal int _movementsInWindow; // Count in current window
internal int _peakMovementRate; // Highest rate seen (packets/sec)
@ -100,10 +100,9 @@ public partial class NetState
_nextMovementTime = Core.TickCount;
_movementCredit = 0;
_hasQueuedMovements = false;
_sustainedQueueDepth = 0;
// Reset movement history - next movement starts a new chain
_lastMovementRecordTime = 0;
_hasMovementRecord = false;
_movementHistoryIndex = 0;
_movementHistoryFull = false;
@ -113,7 +112,7 @@ public partial class NetState
_rttProbeInterval = RttProbeIntervalNormal;
// Reset packet rate window
_movementWindowStart = 0;
_movementWindowStart = Core.TickCount;
_movementsInWindow = 0;
}
@ -165,17 +164,19 @@ public partial class NetState
private const long MaxStableLatency = 200; // Max RTT (ms) for "stable" connection
// RTT state
internal long _rttProbeTime; // When we sent the probe (0 = not waiting)
internal long _lastRtt; // Most recent RTT measurement
internal bool _rttProbePending; // True while waiting for a probe response
internal long _rttProbeTime; // When we sent the probe (valid only when _rttProbePending)
internal long[] _rttHistory; // Rolling history (lazy init)
internal int _rttHistoryIndex; // Current position in history
internal int _rttSampleCount; // Number of samples collected (saturates at RttHistorySize)
internal long _rttVariance; // Calculated variance for stability
internal long _nextRttProbe; // When to send next probe
internal long _nextRttProbe = Core.TickCount; // When to send next probe
internal int _rttProbeInterval = RttProbeIntervalNormal; // Current probe interval
// High-resolution timestamp for RTT measurement (Stopwatch ticks, not game loop ticks)
private long _rttProbeTimestampHiRes;
/// <summary>
/// Gets the most recent RTT measurement, or 0 if none has been recorded.
/// </summary>
public long LastRtt => _rttSampleCount > 0 ? _rttHistory[(_rttHistoryIndex - 1) & (RttHistorySize - 1)] : 0;
/// <summary>
/// Sets the RTT probe interval based on suspicion level.
@ -206,23 +207,22 @@ public partial class NetState
var now = Core.TickCount;
// Don't send if we're still waiting for a response
if (_rttProbeTime > 0)
if (_rttProbePending)
{
// Timeout after 10 seconds - connection is probably dead or very laggy
if (now - _rttProbeTime > 10000)
{
_rttProbeTime = 0;
_rttProbeTimestampHiRes = 0;
_rttProbePending = false;
}
return;
}
// First probe: send immediately when player starts moving
// Subsequent probes: send when interval has passed
if (_nextRttProbe == 0 || now >= _nextRttProbe)
if (now - _nextRttProbe >= 0)
{
_rttProbePending = true;
_rttProbeTime = now;
_rttProbeTimestampHiRes = Stopwatch.GetTimestamp();
_nextRttProbe = now + _rttProbeInterval + Utility.Random(RttProbeJitter);
if (_movementLogging)
@ -242,10 +242,9 @@ public partial class NetState
/// </summary>
public void RecordRttMeasurement()
{
var nowHiRes = Stopwatch.GetTimestamp();
var now = Core.TickCount;
if (_rttProbeTime <= 0)
if (!_rttProbePending)
{
// Not expecting a response (client-initiated version send) - ignore silently
return;
@ -253,19 +252,15 @@ public partial class NetState
var rtt = now - _rttProbeTime;
// High-resolution RTT in microseconds
var rttHiResUs = (nowHiRes - _rttProbeTimestampHiRes) * 1_000_000 / Stopwatch.Frequency;
if (_movementLogging)
{
movementLogger.Debug(
"[RTT-Response] {Account}: {Rtt}ms (HiRes: {RttHiRes:F2}ms)",
Account?.Username ?? _toString, rtt, rttHiResUs / 1000.0
"[RTT-Response] {Account}: {Rtt}ms",
Account?.Username ?? _toString, rtt
);
}
_rttProbeTime = 0;
_rttProbeTimestampHiRes = 0;
_rttProbePending = false;
// Sanity check - RTT should be positive and reasonable
if (rtt is <= 0 or > 10000)
@ -285,7 +280,6 @@ public partial class NetState
// Update history
_rttHistory[_rttHistoryIndex++ & (RttHistorySize - 1)] = rtt;
_lastRtt = rtt;
// Track sample count (saturates at buffer size)
if (_rttSampleCount < RttHistorySize)

View file

@ -44,7 +44,7 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
private static readonly Queue<NetState> _connectingQueue = new(2048);
private static readonly HashSet<NetState> _instances = new(2048);
public static IReadOnlySet<NetState> Instances => _instances;
public static HashSet<NetState> Instances => _instances;
private readonly string _toString;
private ClientVersion _version;
@ -109,9 +109,6 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
Address = address;
Seeded = false;
HuePickers = [];
Menus = [];
Trades = [];
NextActivityCheck = Core.TickCount + 30000;
ConnectedOn = Core.Now;
_toString = address?.ToString() ?? "(error)";
@ -166,7 +163,7 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
public bool BlockAllPackets { get; set; }
public List<SecureTrade> Trades { get; }
public List<SecureTrade> Trades { get; private set; }
public bool Seeded { get; set; }
@ -260,8 +257,18 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
public void ValidateAllTrades()
{
if (Trades == null)
{
return;
}
for (var i = Trades.Count - 1; i >= 0; --i)
{
if (Trades == null)
{
break;
}
if (i >= Trades.Count)
{
continue;
@ -280,8 +287,18 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
public void CancelAllTrades()
{
if (Trades == null)
{
return;
}
for (var i = Trades.Count - 1; i >= 0; --i)
{
if (Trades != null)
{
break;
}
if (i < Trades.Count)
{
Trades[i].Cancel();
@ -291,11 +308,21 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
public void RemoveTrade(SecureTrade trade)
{
Trades.Remove(trade);
Trades?.Remove(trade);
if (Trades?.Count == 0)
{
Trades = null;
}
}
public SecureTrade FindTrade(Mobile m)
{
if (Trades == null)
{
return null;
}
for (var i = 0; i < Trades.Count; ++i)
{
var trade = Trades[i];
@ -311,6 +338,11 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
public SecureTradeContainer FindTradeContainer(Mobile m)
{
if (Trades == null)
{
return null;
}
for (var i = 0; i < Trades.Count; ++i)
{
var trade = Trades[i];
@ -336,7 +368,11 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
{
var newTrade = new SecureTrade(Mobile, state.Mobile);
Trades ??= [];
Trades.Add(newTrade);
state.Trades ??= [];
state.Trades.Add(newTrade);
return newTrade.From.Container;
@ -1176,8 +1212,16 @@ public partial class NetState : IComparable<NetState>, IValueLinkListNode<NetSta
var a = Account;
Menus.Clear();
HuePickers.Clear();
Menus?.Clear();
Menus = null;
HuePickers?.Clear();
HuePickers = null;
// Just in case, but should already be nulled when Mobile.NetState is set to null and CancelAllTrades is called.
Trades?.Clear();
Trades = null;
Account = null;
ServerInfo = null;
CityInfo = null;