CommonNet.h

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/*
        This file is part of cpp-ethereum.

        cpp-ethereum is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        cpp-ethereum is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once

#include <string>
#include <chrono>
#include <libdevcore/Common.h>
#include <libdevcore/Log.h>

namespace dev
{

class OverlayDB;

namespace eth
{

#if ETH_DEBUG
static const unsigned c_maxHeaders = 2048;              
static const unsigned c_maxHeadersAsk = 2048;   
static const unsigned c_maxBlocks = 128;                
static const unsigned c_maxBlocksAsk = 128;             
static const unsigned c_maxPayload = 262144;    
#else
static const unsigned c_maxHeaders = 2048;              
static const unsigned c_maxHeadersAsk = 2048;   
static const unsigned c_maxBlocks = 128;                
static const unsigned c_maxBlocksAsk = 128;             
static const unsigned c_maxPayload = 262144;    
#endif
static const unsigned c_maxNodes = c_maxBlocks; 
static const unsigned c_maxReceipts = c_maxBlocks; 

class BlockChain;
class TransactionQueue;
class EthereumHost;
class EthereumPeer;

enum SubprotocolPacketType: byte
{
        StatusPacket = 0x00,
        NewBlockHashesPacket = 0x01,
        TransactionsPacket = 0x02,
        GetBlockHeadersPacket = 0x03,
        BlockHeadersPacket = 0x04,
        GetBlockBodiesPacket = 0x05,
        BlockBodiesPacket = 0x06,
        NewBlockPacket = 0x07,

        GetNodeDataPacket = 0x0d,
        NodeDataPacket = 0x0e,
        GetReceiptsPacket = 0x0f,
        ReceiptsPacket = 0x10,

        PacketCount
};

enum class Asking
{
        State,
        BlockHeaders,
        BlockBodies,
        NodeData,
        Receipts,
        Nothing
};

enum class SyncState
{
        NotSynced,                      
        Idle,                           
        Waiting,                        
        Blocks,                         
        State,                          
        NewBlocks,                      

        Size            
};

struct SyncStatus
{
        SyncState state = SyncState::Idle;
        unsigned protocolVersion = 0;
        unsigned startBlockNumber;
        unsigned currentBlockNumber;
        unsigned highestBlockNumber;
        bool majorSyncing = false;
};

}
}