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.
//
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// agreements granting a non-assignable, non-transferable and non-exclusive license
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// in the Agreement.
//
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#pragma once
 
#include <OnixS/CME/ConflatedTCP/ABI.h>
#include <OnixS/CME/ConflatedTCP/Compiler.h>
 
#include <OnixS/CME/ConflatedTCP/messaging/Composites.h>
#include <OnixS/CME/ConflatedTCP/messaging/Forwards.h>
 
 
ONIXS_CONFLATEDTCP_MESSAGING_NAMESPACE_BEGIN
 
#if defined(ONIXS_CONFLATEDTCP_COMPILER_CXX_CONSTEXPR) && ONIXS_CONFLATEDTCP_COMPILER_CXX_CONSTEXPR

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<Negotiate200> : HasEmptyCredentials<Negotiate200> {};

template <>
struct MaxMessageSizeTraits<Terminate203> : HasNoVariableFieldsOrGroups<Terminate203> {};
 
#endif
 
ONIXS_CONFLATEDTCP_MESSAGING_NAMESPACE_END