MessageSizeTraits.h

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// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
// This software owned by Onix Solutions Limited [OnixS] and is
// protected by copyright law and international copyright treaties.
//
// Access to and use of the software is governed by the terms of the applicable
// OnixS Software Services Agreement (the Agreement) and Customer end user license
// agreements granting a non-assignable, non-transferable and non-exclusive license
// to use the software for it's own data processing purposes under the terms defined
// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or
// reproduction of any part of this source code or associated reference material
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// amendments to this copyright notice, are expressly prohibited.
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#pragma once
 
#include <OnixS/CME/iLink3/ABI.h>
#include <OnixS/CME/iLink3/Compiler.h>
 
#include <OnixS/CME/iLink3/messaging/Composites.h>
#include <OnixS/CME/iLink3/messaging/Forwards.h>
 
 
ONIXS_ILINK3_MESSAGING_NAMESPACE_BEGIN
 
#if defined(ONIXS_ILINK3_CXX11)

template <typename Message>
struct HasEmptyCredentials
{
    static constexpr bool UseCustomValue = true;
 
    static constexpr
    UInt16 calculateMaxMessageSize()
    {
        return
            Message::blockLength(Message::Schema::Version)
            + MessageHeader::Size
            + Message::getMinimalVariableFieldsSize(Message::Schema::Version);
    }
};

template <typename Message>
struct HasNoVariableFieldsOrGroups
{
    static constexpr bool UseCustomValue = true;
 
    static constexpr
        UInt16 calculateMaxMessageSize()
    {
        return
            Message::blockLength(Message::Schema::Version)
            + MessageHeader::Size;
    }
};

template <typename Message> struct MaxMessageSizeTraits;

template <>
struct MaxMessageSizeTraits<Negotiate500> : HasEmptyCredentials<Negotiate500> {};

template <>
struct MaxMessageSizeTraits<Establish503> : HasEmptyCredentials<Establish503> {};

template <>
struct MaxMessageSizeTraits<Sequence506> : HasNoVariableFieldsOrGroups<Sequence506> {};

template <>
struct MaxMessageSizeTraits<Terminate507> : HasNoVariableFieldsOrGroups<Terminate507> {};

template <>
struct MaxMessageSizeTraits<Retransmission509> : HasNoVariableFieldsOrGroups<Retransmission509> {};
 
#endif
 
ONIXS_ILINK3_MESSAGING_NAMESPACE_END