public override object Handle(IMessage message, object target)
{
if (ReplayToken.IsReplay(message))
{
return(null);
}
return(base.Handle(message, target));
}
private void CleanOldTokens()
{
DateTime staleBarrier = DateTime.Now.AddSeconds(-Settings.ReplayDetectionWindowSeconds);
while (_queue.Count > 0 && _queue.Peek().UseTime < staleBarrier)
{
ReplayToken token = _queue.Dequeue();
_set.Remove(token);
}
}
public override bool Equals(object obj)
{
ReplayToken that = obj as ReplayToken;
if (that == null)
{
return(false);
}
return(this.Hash == that.Hash);
}
public override bool Equals(object obj)
{
ReplayToken that = obj as ReplayToken;
if (that == null)
{
return(false);
}
return(this.SessionId == that.SessionId &&
this.SequenceNumber == that.SequenceNumber);
}
public void CheckAndStore(string hash)
{
ReplayToken token = new ReplayToken(hash);
if (_set.Contains(token))
{
throw new AuthException("Message replay detected.");
}
_set.Add(token);
_queue.Enqueue(token);
CleanOldTokens();
}
public void CheckAndStore(int sessionId, int sequenceNumber)
{
ReplayToken token = new ReplayToken(sessionId, sequenceNumber);
if (_set.Contains(token))
{
throw new AuthException("Session message sequence replay detected.");
}
_set.Add(token);
_queue.Enqueue(token);
cleanOldTokens();
}
public new object?Handle(IMessage <object> message, T target)
{
return(ReplayToken.IsReplay(message) ? null : base.Handle(message, target));
}