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	diff --git a/src/serialize.h b/src/serialize.h
	index 447d808de..7f8f93328 100644
	--- a/src/serialize.h
	+++ b/src/serialize.h
	@@ -1,1383 +1,1387 @@
	// Copyright (c) 2009-2010 Satoshi Nakamoto
	// Copyright (c) 2009-2013 The Bitcoin developers
	// Distributed under the MIT/X11 software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_SERIALIZE_H
	#define BITCOIN_SERIALIZE_H

	#include "allocators.h"

	#include <algorithm>
	#include <assert.h>
	#include <ios>
	#include <limits>
	#include <map>
	#include <set>
	#include <stdint.h>
	#include <string>
	#include <string.h>
	#include <utility>
	#include <vector>

	#include <boost/tuple/tuple.hpp>
	#include <boost/type_traits/is_fundamental.hpp>

	class CAutoFile;
	class CDataStream;
	class CScript;

	static const unsigned int MAX_SIZE = 0x02000000;

	// Used to bypass the rule against non-const reference to temporary
	// where it makes sense with wrappers such as CFlatData or CTxDB
	template<typename T>
	inline T& REF(const T& val)
	{
	return const_cast<T&>(val);
	}

	// Used to acquire a non-const pointer "this" to generate bodies
	// of const serialization operations from a template
	template<typename T>
	inline T* NCONST_PTR(const T* val)
	{
	return const_cast<T*>(val);
	}

	/** Get begin pointer of vector (non-const version).
	* @note These functions avoid the undefined case of indexing into an empty
	* vector, as well as that of indexing after the end of the vector.
	*/
	template <class T, class TAl>
	inline T* begin_ptr(std::vector<T,TAl>& v)
	{
	return v.empty() ? NULL : &v[0];
	}
	/** Get begin pointer of vector (const version) */
	template <class T, class TAl>
	inline const T* begin_ptr(const std::vector<T,TAl>& v)
	{
	return v.empty() ? NULL : &v[0];
	}
	/** Get end pointer of vector (non-const version) */
	template <class T, class TAl>
	inline T* end_ptr(std::vector<T,TAl>& v)
	{
	return v.empty() ? NULL : (&v[0] + v.size());
	}
	/** Get end pointer of vector (const version) */
	template <class T, class TAl>
	inline const T* end_ptr(const std::vector<T,TAl>& v)
	{
	return v.empty() ? NULL : (&v[0] + v.size());
	}

	/////////////////////////////////////////////////////////////////
	//
	// Templates for serializing to anything that looks like a stream,
	// i.e. anything that supports .read(char, size_t) and .write(char, size_t)
	//

	enum
	{
	// primary actions
	SER_NETWORK = (1 << 0),
	SER_DISK = (1 << 1),
	SER_GETHASH = (1 << 2),
	};

	#define READWRITE(obj) (::SerReadWrite(s, (obj), nType, nVersion, ser_action))

	/* Implement three methods for serializable objects. These are actually wrappers over
	* "SerializationOp" template, which implements the body of each class' serialization
	* code. Adding "ADD_SERIALIZE_METHODS" in the body of the class causes these wrappers to be
	* added as members. */
	#define ADD_SERIALIZE_METHODS \
	size_t GetSerializeSize(int nType, int nVersion) const { \
	CSizeComputer s(nType, nVersion); \
	NCONST_PTR(this)->SerializationOp(s, CSerActionSerialize(), nType, nVersion);\
	return s.size(); \
	} \
	template<typename Stream> \
	void Serialize(Stream& s, int nType, int nVersion) const { \
	NCONST_PTR(this)->SerializationOp(s, CSerActionSerialize(), nType, nVersion);\
	} \
	template<typename Stream> \
	void Unserialize(Stream& s, int nType, int nVersion) { \
	SerializationOp(s, CSerActionUnserialize(), nType, nVersion); \
	}



	//
	// Basic types
	//
	#define WRITEDATA(s, obj) s.write((char*)&(obj), sizeof(obj))
	#define READDATA(s, obj) s.read((char*)&(obj), sizeof(obj))

	inline unsigned int GetSerializeSize(char a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(signed char a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(unsigned char a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(signed short a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(signed int a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(unsigned int a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(signed long a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(unsigned long a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(signed long long a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(unsigned long long a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(float a, int, int=0) { return sizeof(a); }
	inline unsigned int GetSerializeSize(double a, int, int=0) { return sizeof(a); }

	template<typename Stream> inline void Serialize(Stream& s, char a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, signed char a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, unsigned char a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, signed short a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, signed int a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, unsigned int a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, signed long a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, unsigned long a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, signed long long a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, unsigned long long a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, float a, int, int=0) { WRITEDATA(s, a); }
	template<typename Stream> inline void Serialize(Stream& s, double a, int, int=0) { WRITEDATA(s, a); }

	template<typename Stream> inline void Unserialize(Stream& s, char& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, signed char& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, signed short& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, signed int& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, signed long& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, signed long long& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, unsigned long long& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, float& a, int, int=0) { READDATA(s, a); }
	template<typename Stream> inline void Unserialize(Stream& s, double& a, int, int=0) { READDATA(s, a); }

	inline unsigned int GetSerializeSize(bool a, int, int=0) { return sizeof(char); }
	template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0) { char f=a; WRITEDATA(s, f); }
	template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }






	//
	// Compact size
	// size < 253 -- 1 byte
	// size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
	// size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
	// size > UINT_MAX -- 9 bytes (255 + 8 bytes)
	//
	inline unsigned int GetSizeOfCompactSize(uint64_t nSize)
	{
	if (nSize < 253) return sizeof(unsigned char);
	else if (nSize <= std::numeric_limits<unsigned short>::max()) return sizeof(unsigned char) + sizeof(unsigned short);
	else if (nSize <= std::numeric_limits<unsigned int>::max()) return sizeof(unsigned char) + sizeof(unsigned int);
	else return sizeof(unsigned char) + sizeof(uint64_t);
	}

	template<typename Stream>
	void WriteCompactSize(Stream& os, uint64_t nSize)
	{
	if (nSize < 253)
	{
	unsigned char chSize = nSize;
	WRITEDATA(os, chSize);
	}
	else if (nSize <= std::numeric_limits<unsigned short>::max())
	{
	unsigned char chSize = 253;
	unsigned short xSize = nSize;
	WRITEDATA(os, chSize);
	WRITEDATA(os, xSize);
	}
	else if (nSize <= std::numeric_limits<unsigned int>::max())
	{
	unsigned char chSize = 254;
	unsigned int xSize = nSize;
	WRITEDATA(os, chSize);
	WRITEDATA(os, xSize);
	}
	else
	{
	unsigned char chSize = 255;
	uint64_t xSize = nSize;
	WRITEDATA(os, chSize);
	WRITEDATA(os, xSize);
	}
	return;
	}

	template<typename Stream>
	uint64_t ReadCompactSize(Stream& is)
	{
	unsigned char chSize;
	READDATA(is, chSize);
	uint64_t nSizeRet = 0;
	if (chSize < 253)
	{
	nSizeRet = chSize;
	}
	else if (chSize == 253)
	{
	unsigned short xSize;
	READDATA(is, xSize);
	nSizeRet = xSize;
	if (nSizeRet < 253)
	throw std::ios_base::failure("non-canonical ReadCompactSize()");
	}
	else if (chSize == 254)
	{
	unsigned int xSize;
	READDATA(is, xSize);
	nSizeRet = xSize;
	if (nSizeRet < 0x10000u)
	throw std::ios_base::failure("non-canonical ReadCompactSize()");
	}
	else
	{
	uint64_t xSize;
	READDATA(is, xSize);
	nSizeRet = xSize;
	if (nSizeRet < 0x100000000LLu)
	throw std::ios_base::failure("non-canonical ReadCompactSize()");
	}
	if (nSizeRet > (uint64_t)MAX_SIZE)
	throw std::ios_base::failure("ReadCompactSize() : size too large");
	return nSizeRet;
	}

	// Variable-length integers: bytes are a MSB base-128 encoding of the number.
	// The high bit in each byte signifies whether another digit follows. To make
	// the encoding is one-to-one, one is subtracted from all but the last digit.
	// Thus, the byte sequence a[] with length len, where all but the last byte
	// has bit 128 set, encodes the number:
	//
	// (a[len-1] & 0x7F) + sum(i=1..len-1, 128^i*((a[len-i-1] & 0x7F)+1))
	//
	// Properties:
	// * Very small (0-127: 1 byte, 128-16511: 2 bytes, 16512-2113663: 3 bytes)
	// * Every integer has exactly one encoding
	// * Encoding does not depend on size of original integer type
	// * No redundancy: every (infinite) byte sequence corresponds to a list
	// of encoded integers.
	//
	// 0: [0x00] 256: [0x81 0x00]
	// 1: [0x01] 16383: [0xFE 0x7F]
	// 127: [0x7F] 16384: [0xFF 0x00]
	// 128: [0x80 0x00] 16511: [0x80 0xFF 0x7F]
	// 255: [0x80 0x7F] 65535: [0x82 0xFD 0x7F]
	// 2^32: [0x8E 0xFE 0xFE 0xFF 0x00]

	template<typename I>
	inline unsigned int GetSizeOfVarInt(I n)
	{
	int nRet = 0;
	while(true) {
	nRet++;
	if (n <= 0x7F)
	break;
	n = (n >> 7) - 1;
	}
	return nRet;
	}

	template<typename Stream, typename I>
	void WriteVarInt(Stream& os, I n)
	{
	unsigned char tmp[(sizeof(n)*8+6)/7];
	int len=0;
	while(true) {
	tmp[len] = (n & 0x7F) \| (len ? 0x80 : 0x00);
	if (n <= 0x7F)
	break;
	n = (n >> 7) - 1;
	len++;
	}
	do {
	WRITEDATA(os, tmp[len]);
	} while(len--);
	}

	template<typename Stream, typename I>
	I ReadVarInt(Stream& is)
	{
	I n = 0;
	while(true) {
	unsigned char chData;
	READDATA(is, chData);
	n = (n << 7) \| (chData & 0x7F);
	if (chData & 0x80)
	n++;
	else
	return n;
	}
	}

	#define FLATDATA(obj) REF(CFlatData((char)&(obj), (char)&(obj) + sizeof(obj)))
	#define VARINT(obj) REF(WrapVarInt(REF(obj)))
	#define LIMITED_STRING(obj,n) REF(LimitedString< n >(REF(obj)))

	/** Wrapper for serializing arrays and POD.
	*/
	class CFlatData
	{
	protected:
	char* pbegin;
	char* pend;
	public:
	CFlatData(void* pbeginIn, void* pendIn) : pbegin((char)pbeginIn), pend((char)pendIn) { }
	template <class T, class TAl>
	explicit CFlatData(std::vector<T,TAl> &v)
	{
	pbegin = (char*)begin_ptr(v);
	pend = (char*)end_ptr(v);
	}
	char* begin() { return pbegin; }
	const char* begin() const { return pbegin; }
	char* end() { return pend; }
	const char* end() const { return pend; }

	unsigned int GetSerializeSize(int, int=0) const
	{
	return pend - pbegin;
	}

	template<typename Stream>
	void Serialize(Stream& s, int, int=0) const
	{
	s.write(pbegin, pend - pbegin);
	}

	template<typename Stream>
	void Unserialize(Stream& s, int, int=0)
	{
	s.read(pbegin, pend - pbegin);
	}
	};

	template<typename I>
	class CVarInt
	{
	protected:
	I &n;
	public:
	CVarInt(I& nIn) : n(nIn) { }

	unsigned int GetSerializeSize(int, int) const {
	return GetSizeOfVarInt<I>(n);
	}

	template<typename Stream>
	void Serialize(Stream &s, int, int) const {
	WriteVarInt<Stream,I>(s, n);
	}

	template<typename Stream>
	void Unserialize(Stream& s, int, int) {
	n = ReadVarInt<Stream,I>(s);
	}
	};

	template<size_t Limit>
	class LimitedString
	{
	protected:
	std::string& string;
	public:
	LimitedString(std::string& string) : string(string) {}

	template<typename Stream>
	void Unserialize(Stream& s, int, int=0)
	{
	size_t size = ReadCompactSize(s);
	if (size > Limit) {
	throw std::ios_base::failure("String length limit exceeded");
	}
	string.resize(size);
	if (size != 0)
	s.read((char*)&string[0], size);
	}

	template<typename Stream>
	void Serialize(Stream& s, int, int=0) const
	{
	WriteCompactSize(s, string.size());
	if (!string.empty())
	s.write((char*)&string[0], string.size());
	}

	unsigned int GetSerializeSize(int, int=0) const
	{
	return GetSizeOfCompactSize(string.size()) + string.size();
	}
	};

	template<typename I>
	CVarInt<I> WrapVarInt(I& n) { return CVarInt<I>(n); }

	//
	// Forward declarations
	//

	// string
	template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
	template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
	template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);

	// vector
	template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
	template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
	template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion);
	template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
	template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
	template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion);
	template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
	template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
	template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion);

	// others derived from vector
	extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion);
	template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion);
	template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion);

	// pair
	template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion);
	template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion);
	template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion);

	// 3 tuple
	template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
	template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
	template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion);

	// 4 tuple
	template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
	template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
	template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);

	// map
	template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion);
	template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion);
	template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion);

	// set
	template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion);
	template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion);
	template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion);





	//
	// If none of the specialized versions above matched, default to calling member function.
	// "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
	// The compiler will only cast int to long if none of the other templates matched.
	// Thanks to Boost serialization for this idea.
	//
	template<typename T>
	inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion)
	{
	return a.GetSerializeSize((int)nType, nVersion);
	}

	template<typename Stream, typename T>
	inline void Serialize(Stream& os, const T& a, long nType, int nVersion)
	{
	a.Serialize(os, (int)nType, nVersion);
	}

	template<typename Stream, typename T>
	inline void Unserialize(Stream& is, T& a, long nType, int nVersion)
	{
	a.Unserialize(is, (int)nType, nVersion);
	}





	//
	// string
	//
	template<typename C>
	unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
	{
	return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
	}

	template<typename Stream, typename C>
	void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
	{
	WriteCompactSize(os, str.size());
	if (!str.empty())
	os.write((char)&str[0], str.size() sizeof(str[0]));
	}

	template<typename Stream, typename C>
	void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
	{
	unsigned int nSize = ReadCompactSize(is);
	str.resize(nSize);
	if (nSize != 0)
	is.read((char)&str[0], nSize sizeof(str[0]));
	}



	//
	// vector
	//
	template<typename T, typename A>
	unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
	{
	return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
	}

	template<typename T, typename A>
	unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
	{
	unsigned int nSize = GetSizeOfCompactSize(v.size());
	for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
	nSize += GetSerializeSize((*vi), nType, nVersion);
	return nSize;
	}

	template<typename T, typename A>
	inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
	{
	return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
	}


	template<typename Stream, typename T, typename A>
	void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
	{
	WriteCompactSize(os, v.size());
	if (!v.empty())
	os.write((char)&v[0], v.size() sizeof(T));
	}

	template<typename Stream, typename T, typename A>
	void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
	{
	WriteCompactSize(os, v.size());
	for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
	::Serialize(os, (*vi), nType, nVersion);
	}

	template<typename Stream, typename T, typename A>
	inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
	{
	Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
	}


	template<typename Stream, typename T, typename A>
	void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
	{
	// Limit size per read so bogus size value won't cause out of memory
	v.clear();
	unsigned int nSize = ReadCompactSize(is);
	unsigned int i = 0;
	while (i < nSize)
	{
	unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
	v.resize(i + blk);
	is.read((char)&v[i], blk sizeof(T));
	i += blk;
	}
	}

	template<typename Stream, typename T, typename A>
	void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
	{
	v.clear();
	unsigned int nSize = ReadCompactSize(is);
	unsigned int i = 0;
	unsigned int nMid = 0;
	while (nMid < nSize)
	{
	nMid += 5000000 / sizeof(T);
	if (nMid > nSize)
	nMid = nSize;
	v.resize(nMid);
	for (; i < nMid; i++)
	Unserialize(is, v[i], nType, nVersion);
	}
	}

	template<typename Stream, typename T, typename A>
	inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
	{
	Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
	}



	//
	// others derived from vector
	//
	inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
	{
	return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
	}

	template<typename Stream>
	void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
	{
	Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
	}

	template<typename Stream>
	void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
	{
	Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
	}



	//
	// pair
	//
	template<typename K, typename T>
	unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
	{
	return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
	}

	template<typename Stream, typename K, typename T>
	void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
	{
	Serialize(os, item.first, nType, nVersion);
	Serialize(os, item.second, nType, nVersion);
	}

	template<typename Stream, typename K, typename T>
	void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
	{
	Unserialize(is, item.first, nType, nVersion);
	Unserialize(is, item.second, nType, nVersion);
	}



	//
	// 3 tuple
	//
	template<typename T0, typename T1, typename T2>
	unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
	{
	unsigned int nSize = 0;
	nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
	nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
	nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
	return nSize;
	}

	template<typename Stream, typename T0, typename T1, typename T2>
	void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
	{
	Serialize(os, boost::get<0>(item), nType, nVersion);
	Serialize(os, boost::get<1>(item), nType, nVersion);
	Serialize(os, boost::get<2>(item), nType, nVersion);
	}

	template<typename Stream, typename T0, typename T1, typename T2>
	void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
	{
	Unserialize(is, boost::get<0>(item), nType, nVersion);
	Unserialize(is, boost::get<1>(item), nType, nVersion);
	Unserialize(is, boost::get<2>(item), nType, nVersion);
	}



	//
	// 4 tuple
	//
	template<typename T0, typename T1, typename T2, typename T3>
	unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
	{
	unsigned int nSize = 0;
	nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
	nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
	nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
	nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion);
	return nSize;
	}

	template<typename Stream, typename T0, typename T1, typename T2, typename T3>
	void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
	{
	Serialize(os, boost::get<0>(item), nType, nVersion);
	Serialize(os, boost::get<1>(item), nType, nVersion);
	Serialize(os, boost::get<2>(item), nType, nVersion);
	Serialize(os, boost::get<3>(item), nType, nVersion);
	}

	template<typename Stream, typename T0, typename T1, typename T2, typename T3>
	void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
	{
	Unserialize(is, boost::get<0>(item), nType, nVersion);
	Unserialize(is, boost::get<1>(item), nType, nVersion);
	Unserialize(is, boost::get<2>(item), nType, nVersion);
	Unserialize(is, boost::get<3>(item), nType, nVersion);
	}



	//
	// map
	//
	template<typename K, typename T, typename Pred, typename A>
	unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
	{
	unsigned int nSize = GetSizeOfCompactSize(m.size());
	for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
	nSize += GetSerializeSize((*mi), nType, nVersion);
	return nSize;
	}

	template<typename Stream, typename K, typename T, typename Pred, typename A>
	void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
	{
	WriteCompactSize(os, m.size());
	for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
	Serialize(os, (*mi), nType, nVersion);
	}

	template<typename Stream, typename K, typename T, typename Pred, typename A>
	void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
	{
	m.clear();
	unsigned int nSize = ReadCompactSize(is);
	typename std::map<K, T, Pred, A>::iterator mi = m.begin();
	for (unsigned int i = 0; i < nSize; i++)
	{
	std::pair<K, T> item;
	Unserialize(is, item, nType, nVersion);
	mi = m.insert(mi, item);
	}
	}



	//
	// set
	//
	template<typename K, typename Pred, typename A>
	unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
	{
	unsigned int nSize = GetSizeOfCompactSize(m.size());
	for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
	nSize += GetSerializeSize((*it), nType, nVersion);
	return nSize;
	}

	template<typename Stream, typename K, typename Pred, typename A>
	void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
	{
	WriteCompactSize(os, m.size());
	for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
	Serialize(os, (*it), nType, nVersion);
	}

	template<typename Stream, typename K, typename Pred, typename A>
	void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
	{
	m.clear();
	unsigned int nSize = ReadCompactSize(is);
	typename std::set<K, Pred, A>::iterator it = m.begin();
	for (unsigned int i = 0; i < nSize; i++)
	{
	K key;
	Unserialize(is, key, nType, nVersion);
	it = m.insert(it, key);
	}
	}



	//
	// Support for ADD_SERIALIZE_METHODS and READWRITE macro
	//
	struct CSerActionSerialize
	{
	bool ForRead() const { return false; }
	};
	struct CSerActionUnserialize
	{
	bool ForRead() const { return true; }
	};

	template<typename Stream, typename T>
	inline void SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
	{
	::Serialize(s, obj, nType, nVersion);
	}

	template<typename Stream, typename T>
	inline void SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
	{
	::Unserialize(s, obj, nType, nVersion);
	}









	typedef std::vector<char, zero_after_free_allocator<char> > CSerializeData;

	class CSizeComputer
	{
	protected:
	size_t nSize;

	public:
	int nType;
	int nVersion;

	CSizeComputer(int nTypeIn, int nVersionIn) : nSize(0), nType(nTypeIn), nVersion(nVersionIn) {}

	CSizeComputer& write(const char *psz, size_t nSize)
	{
	this->nSize += nSize;
	return *this;
	}

	template<typename T>
	CSizeComputer& operator<<(const T& obj)
	{
	::Serialize(*this, obj, nType, nVersion);
	return (*this);
	}

	size_t size() const {
	return nSize;
	}
	};

	/** Double ended buffer combining vector and stream-like interfaces.
	*
	* >> and << read and write unformatted data using the above serialization templates.
	* Fills with data in linear time; some stringstream implementations take N^2 time.
	*/
	class CDataStream
	{
	protected:
	typedef CSerializeData vector_type;
	vector_type vch;
	unsigned int nReadPos;
	public:
	int nType;
	int nVersion;

	typedef vector_type::allocator_type allocator_type;
	typedef vector_type::size_type size_type;
	typedef vector_type::difference_type difference_type;
	typedef vector_type::reference reference;
	typedef vector_type::const_reference const_reference;
	typedef vector_type::value_type value_type;
	typedef vector_type::iterator iterator;
	typedef vector_type::const_iterator const_iterator;
	typedef vector_type::reverse_iterator reverse_iterator;

	explicit CDataStream(int nTypeIn, int nVersionIn)
	{
	Init(nTypeIn, nVersionIn);
	}

	CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
	{
	Init(nTypeIn, nVersionIn);
	}

	#if !defined(_MSC_VER) \|\| _MSC_VER >= 1300
	CDataStream(const char* pbegin, const char* pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
	{
	Init(nTypeIn, nVersionIn);
	}
	#endif

	CDataStream(const vector_type& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
	{
	Init(nTypeIn, nVersionIn);
	}

	CDataStream(const std::vector<char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
	{
	Init(nTypeIn, nVersionIn);
	}

	CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
	{
	Init(nTypeIn, nVersionIn);
	}

	void Init(int nTypeIn, int nVersionIn)
	{
	nReadPos = 0;
	nType = nTypeIn;
	nVersion = nVersionIn;
	}

	CDataStream& operator+=(const CDataStream& b)
	{
	vch.insert(vch.end(), b.begin(), b.end());
	return *this;
	}

	friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
	{
	CDataStream ret = a;
	ret += b;
	return (ret);
	}

	std::string str() const
	{
	return (std::string(begin(), end()));
	}


	//
	// Vector subset
	//
	const_iterator begin() const { return vch.begin() + nReadPos; }
	iterator begin() { return vch.begin() + nReadPos; }
	const_iterator end() const { return vch.end(); }
	iterator end() { return vch.end(); }
	size_type size() const { return vch.size() - nReadPos; }
	bool empty() const { return vch.size() == nReadPos; }
	void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
	void reserve(size_type n) { vch.reserve(n + nReadPos); }
	const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
	reference operator[](size_type pos) { return vch[pos + nReadPos]; }
	void clear() { vch.clear(); nReadPos = 0; }
	iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
	void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }

	void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
	{
	assert(last - first >= 0);
	if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
	{
	// special case for inserting at the front when there's room
	nReadPos -= (last - first);
	memcpy(&vch[nReadPos], &first[0], last - first);
	}
	else
	vch.insert(it, first, last);
	}

	#if !defined(_MSC_VER) \|\| _MSC_VER >= 1300
	void insert(iterator it, const char* first, const char* last)
	{
	assert(last - first >= 0);
	if (it == vch.begin() + nReadPos && (unsigned int)(last - first) <= nReadPos)
	{
	// special case for inserting at the front when there's room
	nReadPos -= (last - first);
	memcpy(&vch[nReadPos], &first[0], last - first);
	}
	else
	vch.insert(it, first, last);
	}
	#endif

	iterator erase(iterator it)
	{
	if (it == vch.begin() + nReadPos)
	{
	// special case for erasing from the front
	if (++nReadPos >= vch.size())
	{
	// whenever we reach the end, we take the opportunity to clear the buffer
	nReadPos = 0;
	return vch.erase(vch.begin(), vch.end());
	}
	return vch.begin() + nReadPos;
	}
	else
	return vch.erase(it);
	}

	iterator erase(iterator first, iterator last)
	{
	if (first == vch.begin() + nReadPos)
	{
	// special case for erasing from the front
	if (last == vch.end())
	{
	nReadPos = 0;
	return vch.erase(vch.begin(), vch.end());
	}
	else
	{
	nReadPos = (last - vch.begin());
	return last;
	}
	}
	else
	return vch.erase(first, last);
	}

	inline void Compact()
	{
	vch.erase(vch.begin(), vch.begin() + nReadPos);
	nReadPos = 0;
	}

	bool Rewind(size_type n)
	{
	// Rewind by n characters if the buffer hasn't been compacted yet
	if (n > nReadPos)
	return false;
	nReadPos -= n;
	return true;
	}


	//
	// Stream subset
	//
	bool eof() const { return size() == 0; }
	CDataStream* rdbuf() { return this; }
	int in_avail() { return size(); }

	void SetType(int n) { nType = n; }
	int GetType() { return nType; }
	void SetVersion(int n) { nVersion = n; }
	int GetVersion() { return nVersion; }
	void ReadVersion() { *this >> nVersion; }
	void WriteVersion() { *this << nVersion; }

	CDataStream& read(char* pch, size_t nSize)
	{
	// Read from the beginning of the buffer
	unsigned int nReadPosNext = nReadPos + nSize;
	if (nReadPosNext >= vch.size())
	{
	if (nReadPosNext > vch.size())
	{
	throw std::ios_base::failure("CDataStream::read() : end of data");
	}
	memcpy(pch, &vch[nReadPos], nSize);
	nReadPos = 0;
	vch.clear();
	return (*this);
	}
	memcpy(pch, &vch[nReadPos], nSize);
	nReadPos = nReadPosNext;
	return (*this);
	}

	CDataStream& ignore(int nSize)
	{
	// Ignore from the beginning of the buffer
	assert(nSize >= 0);
	unsigned int nReadPosNext = nReadPos + nSize;
	if (nReadPosNext >= vch.size())
	{
	if (nReadPosNext > vch.size())
	throw std::ios_base::failure("CDataStream::ignore() : end of data");
	nReadPos = 0;
	vch.clear();
	return (*this);
	}
	nReadPos = nReadPosNext;
	return (*this);
	}

	CDataStream& write(const char* pch, size_t nSize)
	{
	// Write to the end of the buffer
	vch.insert(vch.end(), pch, pch + nSize);
	return (*this);
	}

	template<typename Stream>
	void Serialize(Stream& s, int nType, int nVersion) const
	{
	// Special case: stream << stream concatenates like stream += stream
	if (!vch.empty())
	s.write((char)&vch[0], vch.size() sizeof(vch[0]));
	}

	template<typename T>
	unsigned int GetSerializeSize(const T& obj)
	{
	// Tells the size of the object if serialized to this stream
	return ::GetSerializeSize(obj, nType, nVersion);
	}

	template<typename T>
	CDataStream& operator<<(const T& obj)
	{
	// Serialize to this stream
	::Serialize(*this, obj, nType, nVersion);
	return (*this);
	}

	template<typename T>
	CDataStream& operator>>(T& obj)
	{
	// Unserialize from this stream
	::Unserialize(*this, obj, nType, nVersion);
	return (*this);
	}

	void GetAndClear(CSerializeData &data) {
	data.insert(data.end(), begin(), end());
	clear();
	}
	};










	-/** RAII wrapper for FILE*.
	+/** Non-refcounted RAII wrapper for FILE*.
	*
	* Will automatically close the file when it goes out of scope if not null.
	* If you're returning the file pointer, return file.release().
	* If you need to close the file early, use file.fclose() instead of fclose(file).
	*/
	class CAutoFile
	{
	+private:
	+ // Disallow copies
	+ CAutoFile(const CAutoFile&);
	+ CAutoFile& operator=(const CAutoFile&);
	protected:
	FILE* file;
	public:
	int nType;
	int nVersion;

	CAutoFile(FILE* filenew, int nTypeIn, int nVersionIn)
	{
	file = filenew;
	nType = nTypeIn;
	nVersion = nVersionIn;
	}

	~CAutoFile()
	{
	fclose();
	}

	void fclose()
	{
	if (file != NULL && file != stdin && file != stdout && file != stderr)
	::fclose(file);
	file = NULL;
	}

	FILE* release() { FILE* ret = file; file = NULL; return ret; }
	operator FILE*() { return file; }
	FILE* operator->() { return file; }
	FILE& operator() { return file; }
	FILE** operator&() { return &file; }
	FILE* operator=(FILE* pnew) { return file = pnew; }
	bool operator!() { return (file == NULL); }


	//
	// Stream subset
	//
	void SetType(int n) { nType = n; }
	int GetType() { return nType; }
	void SetVersion(int n) { nVersion = n; }
	int GetVersion() { return nVersion; }
	void ReadVersion() { *this >> nVersion; }
	void WriteVersion() { *this << nVersion; }

	CAutoFile& read(char* pch, size_t nSize)
	{
	if (!file)
	throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
	if (fread(pch, 1, nSize, file) != nSize)
	throw std::ios_base::failure(feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
	return (*this);
	}

	CAutoFile& write(const char* pch, size_t nSize)
	{
	if (!file)
	throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
	if (fwrite(pch, 1, nSize, file) != nSize)
	throw std::ios_base::failure("CAutoFile::write : write failed");
	return (*this);
	}

	template<typename T>
	unsigned int GetSerializeSize(const T& obj)
	{
	// Tells the size of the object if serialized to this stream
	return ::GetSerializeSize(obj, nType, nVersion);
	}

	template<typename T>
	CAutoFile& operator<<(const T& obj)
	{
	// Serialize to this stream
	if (!file)
	throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
	::Serialize(*this, obj, nType, nVersion);
	return (*this);
	}

	template<typename T>
	CAutoFile& operator>>(T& obj)
	{
	// Unserialize from this stream
	if (!file)
	throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
	::Unserialize(*this, obj, nType, nVersion);
	return (*this);
	}
	};

	/** Wrapper around a FILE* that implements a ring buffer to
	* deserialize from. It guarantees the ability to rewind
	* a given number of bytes. */
	class CBufferedFile
	{
	private:
	FILE *src; // source file
	uint64_t nSrcPos; // how many bytes have been read from source
	uint64_t nReadPos; // how many bytes have been read from this
	uint64_t nReadLimit; // up to which position we're allowed to read
	uint64_t nRewind; // how many bytes we guarantee to rewind
	std::vector<char> vchBuf; // the buffer

	protected:
	// read data from the source to fill the buffer
	bool Fill() {
	unsigned int pos = nSrcPos % vchBuf.size();
	unsigned int readNow = vchBuf.size() - pos;
	unsigned int nAvail = vchBuf.size() - (nSrcPos - nReadPos) - nRewind;
	if (nAvail < readNow)
	readNow = nAvail;
	if (readNow == 0)
	return false;
	size_t read = fread((void*)&vchBuf[pos], 1, readNow, src);
	if (read == 0) {
	throw std::ios_base::failure(feof(src) ? "CBufferedFile::Fill : end of file" : "CBufferedFile::Fill : fread failed");
	} else {
	nSrcPos += read;
	return true;
	}
	}

	public:
	int nType;
	int nVersion;

	CBufferedFile(FILE *fileIn, uint64_t nBufSize, uint64_t nRewindIn, int nTypeIn, int nVersionIn) :
	src(fileIn), nSrcPos(0), nReadPos(0), nReadLimit((uint64_t)(-1)), nRewind(nRewindIn), vchBuf(nBufSize, 0),
	nType(nTypeIn), nVersion(nVersionIn) {
	}

	// check whether we're at the end of the source file
	bool eof() const {
	return nReadPos == nSrcPos && feof(src);
	}

	// read a number of bytes
	CBufferedFile& read(char *pch, size_t nSize) {
	if (nSize + nReadPos > nReadLimit)
	throw std::ios_base::failure("Read attempted past buffer limit");
	if (nSize + nRewind > vchBuf.size())
	throw std::ios_base::failure("Read larger than buffer size");
	while (nSize > 0) {
	if (nReadPos == nSrcPos)
	Fill();
	unsigned int pos = nReadPos % vchBuf.size();
	size_t nNow = nSize;
	if (nNow + pos > vchBuf.size())
	nNow = vchBuf.size() - pos;
	if (nNow + nReadPos > nSrcPos)
	nNow = nSrcPos - nReadPos;
	memcpy(pch, &vchBuf[pos], nNow);
	nReadPos += nNow;
	pch += nNow;
	nSize -= nNow;
	}
	return (*this);
	}

	// return the current reading position
	uint64_t GetPos() {
	return nReadPos;
	}

	// rewind to a given reading position
	bool SetPos(uint64_t nPos) {
	nReadPos = nPos;
	if (nReadPos + nRewind < nSrcPos) {
	nReadPos = nSrcPos - nRewind;
	return false;
	} else if (nReadPos > nSrcPos) {
	nReadPos = nSrcPos;
	return false;
	} else {
	return true;
	}
	}

	bool Seek(uint64_t nPos) {
	long nLongPos = nPos;
	if (nPos != (uint64_t)nLongPos)
	return false;
	if (fseek(src, nLongPos, SEEK_SET))
	return false;
	nLongPos = ftell(src);
	nSrcPos = nLongPos;
	nReadPos = nLongPos;
	return true;
	}

	// prevent reading beyond a certain position
	// no argument removes the limit
	bool SetLimit(uint64_t nPos = (uint64_t)(-1)) {
	if (nPos < nReadPos)
	return false;
	nReadLimit = nPos;
	return true;
	}

	template<typename T>
	CBufferedFile& operator>>(T& obj) {
	// Unserialize from this stream
	::Unserialize(*this, obj, nType, nVersion);
	return (*this);
	}

	// search for a given byte in the stream, and remain positioned on it
	void FindByte(char ch) {
	while (true) {
	if (nReadPos == nSrcPos)
	Fill();
	if (vchBuf[nReadPos % vchBuf.size()] == ch)
	break;
	nReadPos++;
	}
	}
	};

	#endif // BITCOIN_SERIALIZE_H

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