private FPData CommonPeekHead(byte[] bytes)
{
if (bytes.Length == 12)
{
FPData data = this._pkg.PeekHead(bytes);
if (!this.CheckHead(data))
{
return(null);
}
if (this._pkg.IsOneWay(data))
{
data.SetPkgLen(12 + data.GetSS() + data.GetPsize());
}
if (this._pkg.IsTwoWay(data))
{
data.SetPkgLen(16 + data.GetSS() + data.GetPsize());
}
if (this._pkg.IsAnswer(data))
{
data.SetPkgLen(16 + data.GetPsize());
}
data.Bytes = this._pkg.GetByteArrayRange(bytes, 0, bytes.Length - 1);
return(data);
}
return(null);
}
private FPData CryptoPeekHead(byte[] bytes)
{
if (bytes != null && bytes.Length >= 4)
{
FPData data = new FPData();
data.SetPkgLen((int)BitConverter.ToUInt32(this._pkg.GetByteArrayRange(bytes, 0, 3), 0));
data.Bytes = this._pkg.GetByteArrayRange(bytes, 4, bytes.Length - 1);
if (data.GetPkgLen() > 8 * 1024 * 1024)
{
return(null);
}
return(data);
}
return(null);
}