139 lines
3.4 KiB
C++
139 lines
3.4 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef __cplusplus
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# error This header can only be compiled as C++.
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#endif
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#ifndef __INCLUDED_PROTOCOL_H__
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#define __INCLUDED_PROTOCOL_H__
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#include "chainparams.h"
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#include "serialize.h"
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#include "netbase.h"
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#include <string>
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#include "uint256.h"
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/** Message header.
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* (4) message start.
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* (12) command.
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* (4) size.
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* (4) checksum.
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*/
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class CMessageHeader
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{
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public:
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CMessageHeader();
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CMessageHeader(const char* pszCommand, unsigned int nMessageSizeIn);
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std::string GetCommand() const;
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bool IsValid() const;
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IMPLEMENT_SERIALIZE
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(
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READWRITE(FLATDATA(pchMessageStart));
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READWRITE(FLATDATA(pchCommand));
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READWRITE(nMessageSize);
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READWRITE(nChecksum);
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)
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// TODO: make private (improves encapsulation)
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public:
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enum {
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COMMAND_SIZE=12,
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MESSAGE_SIZE_SIZE=sizeof(int),
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CHECKSUM_SIZE=sizeof(int),
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MESSAGE_SIZE_OFFSET=MESSAGE_START_SIZE+COMMAND_SIZE,
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CHECKSUM_OFFSET=MESSAGE_SIZE_OFFSET+MESSAGE_SIZE_SIZE,
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HEADER_SIZE=MESSAGE_START_SIZE+COMMAND_SIZE+MESSAGE_SIZE_SIZE+CHECKSUM_SIZE
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};
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char pchMessageStart[MESSAGE_START_SIZE];
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char pchCommand[COMMAND_SIZE];
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unsigned int nMessageSize;
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unsigned int nChecksum;
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};
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/** nServices flags */
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enum
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{
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NODE_NETWORK = (1 << 0),
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};
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/** A CService with information about it as peer */
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class CAddress : public CService
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{
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public:
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CAddress();
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explicit CAddress(CService ipIn, uint64 nServicesIn=NODE_NETWORK);
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void Init();
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IMPLEMENT_SERIALIZE
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(
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CAddress* pthis = const_cast<CAddress*>(this);
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CService* pip = (CService*)pthis;
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if (fRead)
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pthis->Init();
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if (nType & SER_DISK)
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READWRITE(nVersion);
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if ((nType & SER_DISK) ||
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(nVersion >= CADDR_TIME_VERSION && !(nType & SER_GETHASH)))
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READWRITE(nTime);
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READWRITE(nServices);
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READWRITE(*pip);
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)
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void print() const;
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// TODO: make private (improves encapsulation)
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public:
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uint64 nServices;
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// disk and network only
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unsigned int nTime;
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// memory only
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int64 nLastTry;
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};
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/** inv message data */
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class CInv
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{
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public:
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CInv();
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CInv(int typeIn, const uint256& hashIn);
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CInv(const std::string& strType, const uint256& hashIn);
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IMPLEMENT_SERIALIZE
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(
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READWRITE(type);
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READWRITE(hash);
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)
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friend bool operator<(const CInv& a, const CInv& b);
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bool IsKnownType() const;
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const char* GetCommand() const;
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std::string ToString() const;
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void print() const;
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// TODO: make private (improves encapsulation)
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public:
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int type;
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uint256 hash;
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};
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enum
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{
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MSG_TX = 1,
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MSG_BLOCK,
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// Nodes may always request a MSG_FILTERED_BLOCK in a getdata, however,
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// MSG_FILTERED_BLOCK should not appear in any invs except as a part of getdata.
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MSG_FILTERED_BLOCK,
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};
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#endif // __INCLUDED_PROTOCOL_H__
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