private static Dictionary <IcmpMessageType, IcmpDatagram> InitializeComplexOptions()
{
return(Enumerable.ToDictionary(Enumerable.Select(Enumerable.Select(Enumerable.Where <Type>((IEnumerable <Type>)Assembly.GetExecutingAssembly().GetTypes(), (Func <Type, bool>)(type =>
{
if (typeof(IcmpDatagram).IsAssignableFrom(type))
{
return IcmpDatagramFactory.GetRegistrationAttribute(type) != null;
}
return false;
})), type => new
{
type = type,
constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, (Binder)null, new Type[3]
{
typeof(byte[]),
typeof(int),
typeof(int)
}, (ParameterModifier[])null)
}), param0 => new
{
MessageType = IcmpDatagramFactory.GetRegistrationAttribute(param0.type).MessageType,
Datagram = (IcmpDatagram)param0.constructor.Invoke(new object[3]
{
null,
(object)0,
(object)0
})
}), prototype => prototype.MessageType, prototype => prototype.Datagram));
}
public static IcmpDatagram CreateDatagram(byte[] buffer, int offset, int length)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (length <= 0)
{
return((IcmpDatagram) new IcmpUnknownDatagram(buffer, offset, length));
}
return(IcmpDatagramFactory.CreateInstance((IcmpMessageType)buffer[offset], buffer, offset, length));
}