mirror of https://github.com/dashpay/dash.git synced 2024-12-25 20:12:57 +01:00

Alexander Block f95aae2b30 Remove all legacy/compatibility MN code (#2600 )

* Remove CActiveLegacyMasternodeManager

* Remove sentinelping RPC

* Remove unused P2P messages and inv types

There are still places where these are used in the code. The next commits
will clean these up.

* Remove MNB/MNP/MNVERIFY related code from masternode(man).h/cpp

* Remove all legacy code regarding block MN payee voting

* Remove MASTERNODE_SYNC_LIST and MASTERNODE_SYNC_MNW states

Also replace all uses of IsMasternodeListSynced and IsWinnersListSynced
with IsBlockchainSynced.

* Remove unsupported masternode RPCs

* Remove UpdateLastPaid methods

* Remove duplicate deterministicmns.h include

* Remove masternode.conf support

* Remove legacy MN lists support from masternode list GUI

* Remove unnecessary AskForMN call

* Remove compatibility code in CPrivateSendQueue::GetSignatureHash

* Don't add locally calculated MN payee in case GetBlockTxOuts failed

This is not valid in DIP3 mode

* Remove check for IsDeterministicMNsSporkActive in "masternode status"

* Move CMasternode::IsValidNetAddr to CActiveDeterministicMasternodeManager

* Remove use of CMasternode::CheckCollateral in governance code

* Remove uses of MASTERNODE_SENTINEL_PING_MAX_SECONDS/MASTERNODE_SENTINEL_PING_MAX_SECONDS

* Remove support for "-masternodeprivkey"

* Remove pre-DIP3 vote cleanup

* Remove compatibility code for quorumModifierHash/masternodeProTxHash

* Remove check for invalid nBlockHeight in CMasternodePayments::GetBlockTxOuts

...and let it crash instead. We expect this method to be called with the
correct height now (after DIP3 was fully deployed).

* Remove ECDSA based Sign/CheckSignature from CGovernanceObject

Only masternodes sign governance objects, so there is no need for ECDSA
support here anymore.

* Always add superblock and MN reward payments into new block

* Always check block payees (except if fLiteMode==true)

* Always allow superblock and MN payees in same block

* Remove/Fix a few references to masternode.conf and related stuff

Also delete guide-startmany.md and masternode_conf.md

* Implement NotifyMasternodeListChanged signal and call governance maintenance

* Remove non-DIP3 code path from CMasternodeMan::Find

* Remove remaining unused code from CMasternode/CMasternodeMan

* Always load governance.dat on startup

* Mine an empty block instead of incrementing nHeight from chain tip in miner tests

This test is crashing otherwise in GetBlockTxOuts as it tries to access a
previous block that is not existing.

* Skip MN payments verification on historical blocks (pre-DIP3 blocks)

Even though DIP3 was active on BIP9 level, the spork was not active yet at
that point meaning that payments were not enforced at that time.

* Remove unused state and CollateralStatus enums

* Unconditionally return false from IsBlockPayeeValid when IsTransactionValid returns false

IsTransactionValid already handles the case where IsDIP3Active() returns
false, making it return true.

* Add override keyword to CDSNotificationInterface::NotifyMasternodeListChanged

* Fix help for masternodelist status (POSE_BANNED and no OUTPOINT_SPENT)

2019-01-03 12:17:43 +03:00

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Raw Blame History

Protocol Documentation - 0.12.1

This document describes the protocol extensions for all additional functionality build into the Dash protocol. This doesn't include any of the Bitcoin protocol, which has been left intact in the Dash project. For more information about the core protocol, please see https://en.bitcoin.it/w/index.php?title#Protocol_documentation&action#edit

Common Structures

Simple types

uint256 => char[32]

CScript => uchar[]

COutPoint

Bitcoin Outpoint https://bitcoin.org/en/glossary/outpoint

Field Size	Field Name	Data type	Description
32	hash	uint256	Hash of transactional output which is being referenced
4	n	uint32_t	Index of transaction which is being referenced

CTxIn

Bitcoin Input https://bitcoin.org/en/glossary/input

Field Size	Field Name	Data type	Description
36	prevout	COutPoint	The previous output from an existing transaction, in the form of an unspent output
1+	script length	var_int	The length of the signature script
?	script	CScript	The script which is validated for this input to be spent
4	nSequence	uint_32t	Transaction version as defined by the sender. Intended for "replacement" of transactions when information is updated before inclusion into a block.

CTxOut

Bitcoin Output https://bitcoin.org/en/glossary/output

Field Size	Field Name	Data type	Description
8	nValue	int64_t	Transfered value
?	scriptPubKey	CScript	The script for indicating what conditions must be fulfilled for this output to be further spent

CTransaction

Field Size	Field Name	Data type	Description
4	nVersion	int32_t	Transaction data format version
1+	tx_in count	var_int	Number of Transaction inputs
41+	vin	CTxIn[]	A list of 1 or more transaction inputs
1+	tx_out count	var_int	Number of Transaction outputs
9+	vout	CTxOut[]	A list of 1 or more transaction outputs
4	nLockTime	uint32_t	The block number or timestamp at which this transaction is unlocked

CPubKey

Bitcoin Public Key https://bitcoin.org/en/glossary/public-key

Field Size	Field Name	Data type	Description
33-65	vch	char[]	The public portion of a keypair which can be used to verify signatures made with the private portion of the keypair.

CService

Field Size	Field Name	Data type	Description
16	IP	CNetAddr	IP Address
2	Port	uint16	IP Port

Message Types

DSTX - "dstx"

CDarksendBroadcastTx

Masternodes can broadcast subsidised transactions without fees for the sake of security in mixing. This is done via the DSTX message.

Field Size	Field Name	Data type	Description
#	tx	CTransaction	The transaction
36	masternodeOutpoint	COutPoint	The unspent output of the masternode which is signing the message
71-73	vchSig	char[]	Signature of this message by masternode (verifiable via pubKeyMasternode)
8	sigTime	int64_t	Time this message was signed

DSSTATUSUPDATE - "dssu"

Mixing pool status update

Field Size	Field Name	Data type	Description
4	nMsgSessionID	int	Session ID
4	nMsgState	int	Current state of mixing process
4	nMsgEntriesCount	int	Number of entries in the mixing pool
4	nMsgStatusUpdate	int	Update state and/or signal if entry was accepted or not
4	nMsgMessageID	int	ID of the typical masternode reply message

DSQUEUE - "dsq"

CDarksendQueue

Asks users to sign final mixing tx message.

Field Size	Field Name	Data type	Description
4	nDenom	int	Which denomination is allowed in this mixing session
36	masternodeOutpoint	COutPoint	The unspent output of the masternode which is hosting this session
8	nTime	int64_t	the time this DSQ was created
1	fReady	bool	if the mixing pool is ready to be executed
66	vchSig	char[]	Signature of this message by masternode (verifiable via pubKeyMasternode)

DSACCEPT - "dsa"

Response to DSQ message which allows the user to join a mixing pool

Field Size	Field Name	Data type	Description
4	nDenom	int	denomination that will be exclusively used when submitting inputs into the pool
216+	txCollateral	CTransaction	collateral tx that will be charged if this client acts maliciously

DSVIN - "dsi"

CDarkSendEntry

When queue is ready user is expected to send his entry to start actual mixing

Field Size	Field Name	Data type	Description
?	vecTxDSIn	CTxDSIn[]	vector of users inputs (CTxDSIn serialization is equal to CTxIn serialization)
216+	txCollateral	CTransaction	Collateral transaction which is used to prevent misbehavior and also to charge fees randomly
?	vecTxOut	CTxOut[]	vector of user outputs

DSSIGNFINALTX - "dss"

User's signed inputs for a group transaction in a mixing session

Field Size	Field Name	Data type	Description
#	inputs	CTxIn[]	signed inputs for mixing session

TXLOCKREQUEST - "ix"

CTxLockRequest

Transaction Lock Request, serialization is the same as for CTransaction.

TXLOCKVOTE - "txlvote"

CTxLockVote

Transaction Lock Vote

Field Size	Field Name	Data type	Description
32	txHash	uint256	txid of the transaction to lock
36	outpoint	COutPoint	The utxo to lock in this transaction
36	outpointMasternode	COutPoint	The utxo of the masternode which is signing the vote
71-73	vchMasternodeSignature	char[]	Signature of this message by masternode (verifiable via pubKeyMasternode)

MNGOVERNANCEOBJECT - "govobj"

Governance Object

A proposal, contract or setting.

Field Size	Field Name	Data type	Description
32	nHashParent	uint256	Parent object, 0 is root
4	nRevision	int	Object revision in the system
8	nTime	int64_t	Time which this object was created
32	nCollateralHash	uint256	Hash of the collateral fee transaction
0-16384	strData	string	Data field - can be used for anything
4	nObjectType	int	????
36	masternodeOutpoint	COutPoint	The unspent output of the masternode which is signing this object
66*	vchSig	char[]	Signature of the masternode (unclear if 66 is the correct size, but this is what it appears to be in most cases)

MNGOVERNANCEOBJECTVOTE - "govobjvote"

Governance Vote

Masternodes use governance voting in response to new proposals, contracts, settings or finalized budgets.

Field Size	Field Name	Data type	Description
36	masternodeOutpoint	COutPoint	The unspent output of the masternode which is voting
32	nParentHash	uint256	Object which we're voting on (proposal, contract, setting or final budget)
4	nVoteOutcome	int	???
4	nVoteSignal	int	???
8	nTime	int64_t	Time which the vote was created
66*	vchSig	char[]	Signature of the masternode (unclear if 66 is the correct size, but this is what it appears to be in most cases)

SPORK - "spork"

Spork

Field Size	Field Name	Data type	Description
4	nSporkID	int
8	nValue	int64_t
8	nTimeSigned	int64_t
66*	vchSig	char[]	Unclear if 66 is the correct size, but this is what it appears to be in most cases

Defined Sporks (per src/sporks.h)

Spork ID	Number	Name	Description
10001	2	INSTANTSEND_ENABLED	Turns on and off InstantSend network wide
10002	3	INSTANTSEND_BLOCK_FILTERING	Turns on and off InstantSend block filtering
10004	5	INSTANTSEND_MAX_VALUE	Controls the max value for an InstantSend transaction (currently 2000 dash)
10005	6	NEW_SIGS	Turns on and off new signature format for Dash-specific messages
10007	8	MASTERNODE_PAYMENT_ENFORCEMENT	Requires masternodes to be paid by miners when blocks are processed
10008	9	SUPERBLOCKS_ENABLED	Superblocks are enabled (the 10% comes to fund the dash treasury)
10009	10	MASTERNODE_PAY_UPDATED_NODES	Only current protocol version masternode's will be paid (not older nodes)
10011	12	RECONSIDER_BLOCKS
10012	13	OLD_SUPERBLOCK_FLAG
10013	14	REQUIRE_SENTINEL_FLAG	Only masternode's running sentinel will be paid

Undocumented messages

DSFINALTX - "dsf"

Darksend Final Transaction

Field Size	Field Name	Data type	Description
4	nSessionID	int
#	txFinal	CTransaction	Final mixing transaction

DSCOMPLETE - "dsc"

Darksend Complete

Field Size	Field Name	Data type	Description
4	nSessionID	int
4	nMessageID	int

MNGOVERNANCESYNC - "govsync"

Governance Sync

Field Size	Field Name	Data type	Description
32	nHash	uint256
#	filter	CBloomFilter

SYNCSTATUSCOUNT - "ssc"

Sync Status Count

Field Size	Field Name	Data type	Description
4	nItemID	int	Masternode Sync Item ID
4	nCount	int	Masternode Sync Count

Defined Sync Item IDs (per src/masternode-sync.h)

Item ID	Name	Description
4	MASTERNODE_SYNC_GOVERNANCE
10	MASTERNODE_SYNC_GOVOBJ
11	MASTERNODE_SYNC_GOVOBJ_VOTE

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