MaxMessageSize.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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// 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
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// amendments to this copyright notice, are expressly prohibited.
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#pragma once
 
#include <OnixS/CME/MDH/ABI.h>
#include <OnixS/CME/MDH/Compiler.h>
 
#include <OnixS/CME/MDH/PacketTraits.h>
 
#include <OnixS/CME/MDH/messaging/Aliases.h>
#include <OnixS/CME/MDH/messaging/Fields.h>
#include <OnixS/CME/MDH/messaging/Composites.h>
 
ONIXS_CMEMDH_MESSAGING_NAMESPACE_BEGIN

constexpr MessageSize MaxMessageSize = 1452 - sizeof(PacketHeader) - sizeof(MessagePrefix);

template <typename Message>
constexpr MessageSize getMaxMessageSize(UInt8 maxGroupItems)
{
    return static_cast<MessageSize>(Message::getMaxMessageSize(maxGroupItems));
}

template <typename Message, UInt8 MaxGroupItems>
struct GetMaxMessageSize
{
    static constexpr MessageSize Size = getMaxMessageSize<Message>(MaxGroupItems);
};

template <typename Message>
constexpr UInt16 getMinMessageSize()
{
    return Message::blockLength(Message::Schema::Version) + MessageHeader::Size
         + Message::getMinimalVariableFieldsSize(Message::Schema::Version);
}

template <typename Message>
struct GetMinMessageSize
{
    static constexpr MessageSize Size = getMinMessageSize<Message>();
};
 
ONIXS_CMEMDH_MESSAGING_NAMESPACE_END