Updates, working to get the network code going.

Application.cpp

@@ -2,6 +2,7 @@
 #include "Config.h"
 #include "PeerDoor.h"
 #include "RPCDoor.h"
+#include "BitcoinUtil.h"
 #include "database/SqliteDatabase.h"
 //#include <boost/log/trivial.hpp>
 #include <iostream>
@@ -26,7 +27,6 @@ Application::Application()
 	mKnownNodes.load();
 	//mUNL.load();
 	mWallet.load();
-	mLedgerMaster.load();
 	mPeerDoor=NULL;
 	mRPCDoor=NULL;
 }

Application.h

@@ -4,9 +4,7 @@
 #include "UniqueNodeList.h"
 #include "ConnectionPool.h"
 #include "KnownNodeList.h"
-#include "LedgerMaster.h"
 #include "TimingService.h"
-#include "ValidationCollection.h"
 #include "Wallet.h"
 #include "database/database.h"
 
@@ -22,10 +20,8 @@ class Application
 	UniqueNodeList mUNL;
 	KnownNodeList mKnownNodes;
 	Wallet mWallet;
-	ValidationCollection mValidations;
 	Database* mDatabase;
 
-	LedgerMaster mLedgerMaster;
 
 	ConnectionPool mConnectionPool;
 	PeerDoor* mPeerDoor;
@@ -40,9 +36,7 @@ public:
 	Application();
 
 	ConnectionPool& getConnectionPool(){ return(mConnectionPool); }
-	LedgerMaster& getLedgerMaster(){ return(mLedgerMaster); }
 	UniqueNodeList& getUNL(){ return(mUNL); }
-	ValidationCollection& getValidationCollection(){  return(mValidations); }
 	Wallet& getWallet(){  return(mWallet); }
 	Database* getDB(){ return(mDatabase); }
 

Peer.cpp

@@ -82,6 +82,199 @@ void Peer::sendPacket(PackedMessage::pointer packet)
 	}
 }
 
+void Peer::start_read_header()
+{
+	mReadbuf.resize(HEADER_SIZE);
+	asio::async_read(mSocket, asio::buffer(mReadbuf),
+		boost::bind(&Peer::handle_read_header, shared_from_this(),
+		asio::placeholders::error));
+}
+void Peer::start_read_body(unsigned msg_len)
+{
+	// m_readbuf already contains the header in its first HEADER_SIZE
+	// bytes. Expand it to fit in the body as well, and start async
+	// read into the body.
+	//
+	mReadbuf.resize(HEADER_SIZE + msg_len);
+	asio::mutable_buffers_1 buf = asio::buffer(&mReadbuf[HEADER_SIZE], msg_len);
+	asio::async_read(mSocket, buf,
+		boost::bind(&Peer::handle_read_body, shared_from_this(),
+		asio::placeholders::error));
+}
+
+void Peer::handle_read_header(const boost::system::error_code& error)
+{
+	if(!error) 
+	{
+		unsigned msg_len = PackedMessage::getLength(mReadbuf);
+		start_read_body(msg_len);
+	}else cout  << "Peer::connected Error: " << error << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
+}
+
+void Peer::handle_read_body(const boost::system::error_code& error)
+{
+	if(!error) 
+	{
+		processReadBuffer();
+		start_read_header();
+	}else cout  << "Peer::connected Error: " << error << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
+}
+
+
+void Peer::processReadBuffer()
+{
+	int type=PackedMessage::getType(mReadbuf);
+	switch(type)
+	{
+	case newcoin::HELLO:
+		{
+			newcoin::TMHello msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvHello(msg);
+			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
+		}
+		break;
+
+	case newcoin::ERROR_MSG:
+		{
+			newcoin::TMErrorMsg msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvErrorMessage(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::PING:
+		{
+			newcoin::TMPing msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvPing(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::GET_CONTACTS:
+		{
+			newcoin::TMGetContacts msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvGetContacts(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::CONTACT:
+		{
+			newcoin::TMContact msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvContact(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::SEARCH_TRANSACTION:
+		{
+			newcoin::TMSearchTransaction msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvSearchTransaction(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::GET_ACCOUNT:
+		{
+			newcoin::TMGetAccount msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvGetAccount(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::ACCOUNT:
+		{
+			newcoin::TMAccount msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvAccount(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::TRANSACTION:
+		{
+			newcoin::TMTransaction msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvTransaction(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::GET_LEDGER:
+		{
+			newcoin::TMGetLedger msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvGetLedger(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::LEDGER:
+		{
+			newcoin::TMLedger msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvLedger(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+#if 0
+	case newcoin::PROPOSE_LEDGER:
+		{
+			newcoin::TM msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recv(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::CLOSE_LEDGER:
+		{
+			newcoin::TM msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recv(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::GET_VALIDATION:
+		{
+			newcoin::TM msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recv(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::VALIDATION:
+		{
+			newcoin::TM msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recv(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+#endif
+
+	case newcoin::GET_OBJECT:
+		{
+			newcoin::TMGetObjectByHash msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvGetObjectByHash(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	case newcoin::OBJECT:
+		{
+			newcoin::TMObjectByHash msg;
+			if(msg.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
+				recvObjectByHash(msg);
+			else cout << "pars error: " << type << endl;
+		}
+
+	default:
+		cout  << "Unknown Msg: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
+	}
+}
+
+
+
+#if 0
+
 void Peer::sendHello()
 {
 	newcoin::Hello* hello=new newcoin::Hello();
@@ -165,114 +358,6 @@ void Peer::sendGetFullLedger(uint256& hash)
 	sendPacket(packet);
 }
 
-void Peer::start_read_header()
-{
-	mReadbuf.resize(HEADER_SIZE);
-	asio::async_read(mSocket, asio::buffer(mReadbuf),
-		boost::bind(&Peer::handle_read_header, shared_from_this(),
-		asio::placeholders::error));
-}
-void Peer::start_read_body(unsigned msg_len)
-{
-	// m_readbuf already contains the header in its first HEADER_SIZE
-	// bytes. Expand it to fit in the body as well, and start async
-	// read into the body.
-	//
-	mReadbuf.resize(HEADER_SIZE + msg_len);
-	asio::mutable_buffers_1 buf = asio::buffer(&mReadbuf[HEADER_SIZE], msg_len);
-	asio::async_read(mSocket, buf,
-		boost::bind(&Peer::handle_read_body, shared_from_this(),
-		asio::placeholders::error));
-}
-
-void Peer::handle_read_header(const boost::system::error_code& error)
-{
-	if(!error) 
-	{
-		unsigned msg_len = PackedMessage::getLength(mReadbuf);
-		start_read_body(msg_len);
-	}else cout  << "Peer::connected Error: " << error << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-}
-
-void Peer::handle_read_body(const boost::system::error_code& error)
-{
-	if(!error) 
-	{
-		processReadBuffer();
-		start_read_header();
-	}else cout  << "Peer::connected Error: " << error << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-}
-
-void Peer::processReadBuffer()
-{
-	int type=PackedMessage::getType(mReadbuf);
-	switch(type)
-	{
-	case newcoin::HELLO:
-		{
-			newcoin::Hello hello;
-			if(hello.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveHello(hello);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-		}
-		break;
-	case newcoin::TRANSACTION:
-		{
-			TransactionPtr trans(new newcoin::Transaction());
-			if(trans->ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveTransaction(trans);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-
-		}
-		break;
-	case newcoin::FULL_LEDGER:
-		{
-			newcoin::FullLedger ledger;
-			if(ledger.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveFullLedger(ledger);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-
-		}
-		break;
-	case newcoin::VALIDATION:
-		{
-			newcoin::Validation validation;
-			if(validation.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveValidation(validation);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-		}
-		break;
-	case newcoin::PROPOSE_LEDGER:
-		{
-			newcoin::ProposeLedger prop;
-			if(prop.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveProposeLedger(prop);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-		}
-		break;
-	
-	case newcoin::GET_FULL_LEDGER:
-		{
-			newcoin::GetFullLedger getFullLedger;
-			if(getFullLedger.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveGetFullLedger(getFullLedger);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-
-		}
-	case newcoin::GET_VALIDATIONS:
-		{
-			newcoin::GetValidations getValid;
-			if(getValid.ParseFromArray(&mReadbuf[HEADER_SIZE], mReadbuf.size() - HEADER_SIZE))
-				receiveGetValidations(getValid);
-			else cout  << "parse error: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-
-		}
-	default:
-		cout  << "Unknown Msg: " << type << endl; //else BOOST_LOG_TRIVIAL(info) << "Error: " << error;
-	}
-}
-
-
 void Peer::receiveHello(newcoin::Hello& packet)
 {
 	// TODO:6 add this guy to your KNL
@@ -328,6 +413,8 @@ void Peer::receiveFullLedger(newcoin::FullLedger& packet)
 	theApp->getLedgerMaster().addFullLedger(packet);
 }
 
+#endif
+
 void Peer::connectTo(KnownNode& node)
 {
 	tcp::endpoint endpoint( address::from_string(node.mIP), node.mPort);
@@ -335,3 +422,4 @@ void Peer::connectTo(KnownNode& node)
 		boost::bind(&Peer::connected, this, asio::placeholders::error) );
 	
 }
+

Peer.h

@@ -30,7 +30,6 @@ class Peer : public boost::enable_shared_from_this<Peer>
 	std::list<PackedMessage::pointer> mSendQ;
 	PackedMessage::pointer mSendingPacket;
 
-
 	Peer(boost::asio::io_service& io_service);
 
 	void handle_write(const boost::system::error_code& error, size_t bytes_transferred);
@@ -44,17 +43,26 @@ class Peer : public boost::enable_shared_from_this<Peer>
 	
 	void sendPacketForce(PackedMessage::pointer packet);
 
-
 	void sendHello();
-	void sendTransaction();
+	void sendTransaction(newcoin::TMTransaction& packet);
 	void sendValidation();
-	void receiveHello(newcoin::Hello& packet);
-	void receiveTransaction(TransactionPtr trans);
-	void receiveValidation(newcoin::Validation& packet);
-	void receiveFullLedger(newcoin::FullLedger& packet);
-	void receiveProposeLedger(newcoin::ProposeLedger& packet);
-	void receiveGetFullLedger(newcoin::GetFullLedger& packet);
-	void receiveGetValidations(newcoin::GetValidations& packet);
+
+	void recvHello(newcoin::TMHello& packet);
+	void recvTransaction(newcoin::TMTransaction& packet);
+	void recvValidation(newcoin::TMValidation& packet);
+	void recvGetValidation(newcoin::TMGetValidations& packet);
+	void recvContact(newcoin::TMContact& packet);
+	void recvGetContacts(newcoin::TMGetContacts& packet);
+	void recvIndexedObject(newcoin::TMIndexedObject& packet);
+	void recvGetObjectByHash(newcoin::TMGetObjectByHash& packet);
+	void recvObjectByHash(newcoin::TMObjectByHash& packet);
+	void recvPing(newcoin::TMPing& packet);
+	void recvErrorMessage(newcoin::TMErrorMsg& packet);
+	void recvSearchTransaction(newcoin::TMSearchTransaction& packet);
+	void recvGetAccount(newcoin::TMGetAccount& packet);
+	void recvAccount(newcoin::TMAccount& packet);
+	void recvGetLedger(newcoin::TMGetLedger& packet);
+	void recvLedger(newcoin::TMLedger& packet);
 
 public:
 	typedef boost::shared_ptr<Peer> pointer;

TimingService.cpp

@@ -32,22 +32,24 @@ void TimingService::start(boost::asio::io_service& ioService)
 void TimingService::handleLedger()
 {
 	cout << "publish ledger" << endl;
+#if 0
 	theApp->getLedgerMaster().startFinalization();
 	mLedgerTimer->expires_at(mLedgerTimer->expires_at() + boost::posix_time::seconds(theConfig.LEDGER_SECONDS));
 	mLedgerTimer->async_wait(boost::bind(&TimingService::handleLedger, this));
 
 	mPropTimer->expires_at(mLedgerTimer->expires_at() + boost::posix_time::seconds(theConfig.LEDGER_PROPOSAL_DELAY_SECONDS));
 	mPropTimer->async_wait(boost::bind(&TimingService::handleProp, this));
+#endif
 }
 
 void TimingService::handleProp()
 {
-	theApp->getLedgerMaster().sendProposal();
+//	theApp->getLedgerMaster().sendProposal();
 }
 
 void TimingService::handleValid()
 {
-	theApp->getLedgerMaster().endFinalization();
+//	theApp->getLedgerMaster().endFinalization();
 }
 
 int TimingService::getCurrentLedgerIndex()

Wallet.cpp

@@ -10,18 +10,19 @@ LocalAccount::LocalAccount(bool) : mAmount(0), mSeqNum(0)
 	mAddress.SetPubKey(mPublicKey.GetPubKey());
 }
 
-#if 0
-
 Wallet::Wallet()
 {
 
 }
 
+
 void Wallet::load()
 {
-
+ // WRITEME
 }
 
+#if 0
+
 int64 Wallet::getBalance()
 {
 	int64 total = 0;

keystore.cpp

@@ -4,6 +4,7 @@
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
 #include "keystore.h"
+#include "BitcoinUtil.h"
 #include <vector>
 
 

newcoin.proto

@@ -7,35 +7,27 @@ enum MessageType {
 	PING=			2;
 
 // network presence detection
-	GET_CONTACTS=		10;
+	GET_CONTACTS=	10;
 	CONTACT=		11;
 
 
 // operations for 'small' nodes
 	SEARCH_TRANSACTION=	20;
 	GET_ACCOUNT=		21;
-	ACCOUNT=		22;
+	ACCOUNT=			22;
 
 // transaction and ledger processing
 	TRANSACTION=		30;
-	GET_LEDGER=		31;
-	LEDGER=			32;
+	GET_LEDGER=			31;
+	LEDGER=				32;
 	PROPOSE_LEDGER=		33;
 	CLOSE_LEDGER=		34;
 
 // data replication and synchronization
 	GET_VALIDATIONS=	40;
-	VALIDATION=		41;
-	GET_OBJECT=		42;
-	OBJECT=			43;
-}
-
-
-message TMBaseMessage {
-	required MessageType type		= 1;
-	optional uint32 seq			= 2;
-	optional uint32 querySeq		= 3; // if this is a reply
-	required bytes innerMessage		= 4;
+	VALIDATION=			41;
+	GET_OBJECT=			42;
+	OBJECT=				43;
 }
 
 
@@ -55,25 +47,25 @@ you must first combine coins from one address to another.
 */
 
 enum TransactionStatus {
-	NEW		= 1;	// origin node did/could not validate
-	CURRENT		= 2;	// scheduled to go in this ledger
-	COMMITED	= 3;	// in a closed ledger
+	NEW				= 1;	// origin node did/could not validate
+	CURRENT			= 2;	// scheduled to go in this ledger
+	COMMITED		= 3;	// in a closed ledger
 	REJECT_CONFLICT	= 4;
 	REJECT_INVALID	= 5;
 	REJECT_FUNDS	= 6;
-	HELD_SEQ	= 7;
-	HELD_LEDGER	= 8;	// held for future ledger
+	HELD_SEQ		= 7;
+	HELD_LEDGER		= 8;	// held for future ledger
 }
 
 message TMTransaction {
-	required bytes from			= 1;
-	required bytes dest			= 2;
-	required uint64 amount			= 3;
+	required bytes from					= 1;
+	required bytes dest					= 2;
+	required uint64 amount				= 3;
 	required uint32 sourceLedgerIndex	= 4;
-	required uint32 seqNum			= 5;
-	required uint32 ident			= 6;
-	required bytes pubKey			= 7;
-	required bytes sig			= 8;
+	required uint32 seqNum				= 5;
+	required uint32 ident				= 6;
+	required bytes pubKey				= 7;
+	required bytes sig					= 8;
 	required TransactionStatus status	= 9;
 	optional uint64 receiveTimestamp	= 10;
 	optional uint32 ledgerIndexPossible	= 11; // the node may not know
@@ -89,7 +81,7 @@ message TMValidation {
 	optional uint64 timestamp		= 3; // only in proposed ledgers
 	optional uint32 confidence		= 4; // only in proposed ledgers
 	required bytes hanko			= 5;
-	required bytes sig			= 6;
+	required bytes sig				= 6;
 }
 
 
@@ -103,13 +95,13 @@ message TMGetValidations {
 
 
 message TMContact {
-	required bytes pubKey			= 1;
+	required bytes pubKey				= 1;
 	required uint32 softwareVersion		= 2;
 	required uint32 protoVersion		= 3;
-	required uint64 nodeFlags		= 4;
-	required uint64 timestamp		= 5;
-	repeated bytes nodeInfo			= 6;
-	required bytes signature		= 7;
+	required uint64 nodeFlags			= 4;
+	required uint64 timestamp			= 5;
+	repeated bytes nodeInfo				= 6;
+	required bytes signature			= 7;
 }
 
 // request node information
@@ -119,20 +111,43 @@ message TMGetContacts {
 }
 
 
+message TMSearchTransaction {
+	required uint32 maxTrans	=1;
+	optional bytes toAccount	=2;
+	optional bytes fromAccount	=3;
+	optional uint32	minLedger	=4;
+	optional bytes fromAcctSeq	=5;
+	repeated bytes transID		=6;
+}
+
+message TMGetAccount {
+	repeated bytes acctID		=1;
+}
+
+message Account {
+	required bytes accountID	=1;
+	required uint64 balance		=2;
+	required uint32 accountSeq	=3;
+	required uint32 ledgerSeq	=4;
+}
+
+message TMAccount{
+	repeated Account accounts	=1;
+}
 
 message TMIndexedObject
 {
 	enum ObjectType {
-		TRANSACTION		= 1;
+		TRANSACTION			= 1;
 		TRANSACTION_NODE	= 2; // a node in a transaction tree
 		TRANSACTION_LEAF	= 3; // a leaf in a transaction tree
-		ACCOUNT			= 4; // a single account state (with balance/sequence)
+		ACCOUNT				= 4; // a single account state (with balance/sequence)
 		ACCOUNT_NODE		= 5; // a node in an account state tree
 		ACCOUNT_LEAF		= 6; // a leaf in an account state tree
-		LEDGER			= 7;
+		LEDGER				= 7;
 	}
 
-	required bytes hash		= 1;
+	required bytes hash			= 1;
 	required ObjectType type	= 2;
 }
 
@@ -148,10 +163,24 @@ message TMGetObjectByHash
 message TMObjectByHash
 {
 	required TMIndexedObject object	= 1;
-	required bytes data		= 2;
+	required bytes data				= 2;
 }
 
+message LedgerNodes {
+	required bytes nodeid			= 1;
+	required bytes nodedata			= 2;
+}
 
+message TMGetLedger {
+	optional bytes hash				= 1;
+	optional uint32 seq				= 2;
+	repeated LedgerNodes nodes		= 3;
+}
+
+message TMLedger {
+	required bytes hash				= 1;
+	repeated LedgerNodes nodes		= 2;
+}
 
 
 message TMPing {
@@ -167,6 +196,6 @@ message TMPing {
 
 
 message TMErrorMsg {
-	optional int32 errorCode		= 1;
-	optional string message			= 2;
+	optional int32 errorCode	= 1;
+	optional string message		= 2;
 }