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<!DOCTYPE html>
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<title>JSDoc: Source: blockchain/chaindb.js</title>
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<h1 class="page-title">Source: blockchain/chaindb.js</h1>
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<pre class="prettyprint source linenums"><code>/*!
* chaindb.js - blockchain data management for bcoin
* Copyright (c) 2014-2015, Fedor Indutny (MIT License)
* Copyright (c) 2014-2017, Christopher Jeffrey (MIT License).
* https://github.com/bcoin-org/bcoin
*/
'use strict';
var assert = require('assert');
var AsyncObject = require('../utils/asyncobject');
var util = require('../utils/util');
var BufferReader = require('../utils/reader');
var StaticWriter = require('../utils/staticwriter');
var Amount = require('../btc/amount');
var encoding = require('../utils/encoding');
var co = require('../utils/co');
var Network = require('../protocol/network');
var CoinView = require('../coins/coinview');
var Coins = require('../coins/coins');
var UndoCoins = require('../coins/undocoins');
var LDB = require('../db/ldb');
var layout = require('./layout');
var LRU = require('../utils/lru');
var Block = require('../primitives/block');
var Outpoint = require('../primitives/outpoint');
var Address = require('../primitives/address');
var ChainEntry = require('./chainentry');
var TXMeta = require('../primitives/txmeta');
var U8 = encoding.U8;
var U32 = encoding.U32;
var DUMMY = new Buffer([0]);
/**
* The database backend for the {@link Chain} object.
* @alias module:blockchain.ChainDB
* @constructor
* @param {Chain} chain
* @param {Boolean?} options.prune - Whether to prune the chain.
* @param {Boolean?} options.spv - SPV-mode, will not save block
* data, only entries.
* @param {String?} options.name - Database name
* @param {String?} options.location - Database location
* @param {String?} options.db - Database backend name
* @property {Boolean} prune
* @emits ChainDB#open
* @emits ChainDB#error
*/
function ChainDB(chain) {
if (!(this instanceof ChainDB))
return new ChainDB(chain);
AsyncObject.call(this);
this.chain = chain;
this.options = chain.options;
this.network = this.options.network;
this.logger = this.options.logger;
this.db = LDB(this.options);
this.stateCache = new StateCache(this.network);
this.state = new ChainState();
this.pending = null;
this.current = null;
this.coinCache = new LRU(this.options.coinCache, getSize);
this.cacheHash = new LRU(this.options.entryCache);
this.cacheHeight = new LRU(this.options.entryCache);
}
util.inherits(ChainDB, AsyncObject);
/**
* Database layout.
* @type {Object}
*/
ChainDB.layout = layout;
/**
* Open the chain db, wait for the database to load.
* @method
* @alias ChainDB#open
* @returns {Promise}
*/
ChainDB.prototype._open = co(function* open() {
var state;
this.logger.info('Opening ChainDB...');
yield this.db.open();
yield this.db.checkVersion('V', 2);
state = yield this.getState();
if (state) {
// Verify options have not changed.
yield this.verifyFlags();
// Verify deployment params have not changed.
yield this.verifyDeployments();
// Load state caches.
this.stateCache = yield this.getStateCache();
// Grab the chainstate if we have one.
this.state = state;
this.logger.info('ChainDB successfully loaded.');
} else {
// Database is fresh.
// Write initial state.
yield this.saveFlags();
yield this.saveDeployments();
yield this.saveGenesis();
this.logger.info('ChainDB successfully initialized.');
}
this.logger.info(
'Chain State: hash=%s tx=%d coin=%d value=%s.',
this.state.rhash(),
this.state.tx,
this.state.coin,
Amount.btc(this.state.value));
});
/**
* Close the chain db, wait for the database to close.
* @alias ChainDB#close
* @returns {Promise}
*/
ChainDB.prototype._close = function close() {
return this.db.close();
};
/**
* Start a batch.
* @returns {Batch}
*/
ChainDB.prototype.start = function start() {
assert(!this.current);
assert(!this.pending);
this.current = this.db.batch();
this.pending = this.state.clone();
this.coinCache.start();
this.cacheHash.start();
this.cacheHeight.start();
return this.current;
};
/**
* Put key and value to current batch.
* @param {String} key
* @param {Buffer} value
*/
ChainDB.prototype.put = function put(key, value) {
assert(this.current);
this.current.put(key, value);
};
/**
* Delete key from current batch.
* @param {String} key
*/
ChainDB.prototype.del = function del(key) {
assert(this.current);
this.current.del(key);
};
/**
* Get current batch.
* @returns {Batch}
*/
ChainDB.prototype.batch = function batch() {
assert(this.current);
return this.current;
};
/**
* Drop current batch.
* @returns {Batch}
*/
ChainDB.prototype.drop = function drop() {
var batch = this.current;
assert(this.current);
assert(this.pending);
this.current = null;
this.pending = null;
this.coinCache.drop();
this.cacheHash.drop();
this.cacheHeight.drop();
this.stateCache.drop();
batch.clear();
};
/**
* Commit current batch.
* @method
* @returns {Promise}
*/
ChainDB.prototype.commit = co(function* commit() {
assert(this.current);
assert(this.pending);
try {
yield this.current.write();
} catch (e) {
this.current = null;
this.pending = null;
this.coinCache.drop();
this.cacheHash.drop();
this.cacheHeight.drop();
throw e;
}
// Overwrite the entire state
// with our new best state
// only if it is committed.
// Note that alternate chain
// tips do not commit anything.
if (this.pending.committed)
this.state = this.pending;
this.current = null;
this.pending = null;
this.coinCache.commit();
this.cacheHash.commit();
this.cacheHeight.commit();
this.stateCache.commit();
});
/**
* Test the cache for a present entry hash or height.
* @param {Hash|Number} block - Hash or height.
*/
ChainDB.prototype.hasCache = function hasCache(block) {
if (typeof block === 'number')
return this.cacheHeight.has(block);
assert(typeof block === 'string');
return this.cacheHash.has(block);
};
/**
* Get an entry directly from the LRU cache. This is
* useful for optimization if we don't want to wait on a
* nextTick during a `get()` call.
* @param {Hash|Number} block - Hash or height.
*/
ChainDB.prototype.getCache = function getCache(block) {
if (typeof block === 'number')
return this.cacheHeight.get(block);
assert(typeof block === 'string');
return this.cacheHash.get(block);
};
/**
* Get the height of a block by hash.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns Number.
*/
ChainDB.prototype.getHeight = co(function* getHeight(hash) {
var entry, height;
if (typeof hash === 'number')
return hash;
assert(typeof hash === 'string');
if (hash === encoding.NULL_HASH)
return -1;
entry = this.cacheHash.get(hash);
if (entry)
return entry.height;
height = yield this.db.get(layout.h(hash));
if (!height)
return -1;
return height.readUInt32LE(0, true);
});
/**
* Get the hash of a block by height. Note that this
* will only return hashes in the main chain.
* @method
* @param {Number} height
* @returns {Promise} - Returns {@link Hash}.
*/
ChainDB.prototype.getHash = co(function* getHash(height) {
var entry, hash;
if (typeof height === 'string')
return height;
assert(typeof height === 'number');
if (height &lt; 0)
return;
entry = this.cacheHeight.get(height);
if (entry)
return entry.hash;
hash = yield this.db.get(layout.H(height));
if (!hash)
return;
return hash.toString('hex');
});
/**
* Retrieve a chain entry by height.
* @method
* @param {Number} height
* @returns {Promise} - Returns {@link ChainEntry}.
*/
ChainDB.prototype.getEntryByHeight = co(function* getEntryByHeight(height) {
var state, entry, hash;
assert(typeof height === 'number');
if (height &lt; 0)
return;
entry = this.cacheHeight.get(height);
if (entry)
return entry;
hash = yield this.db.get(layout.H(height));
if (!hash)
return;
hash = hash.toString('hex');
state = this.chain.state;
entry = yield this.getEntryByHash(hash);
if (!entry)
return;
// By the time getEntry has completed,
// a reorg may have occurred. This entry
// may not be on the main chain anymore.
if (this.chain.state === state)
this.cacheHeight.set(entry.height, entry);
return entry;
});
/**
* Retrieve a chain entry by hash.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link ChainEntry}.
*/
ChainDB.prototype.getEntryByHash = co(function* getEntryByHash(hash) {
var entry, raw;
assert(typeof hash === 'string');
if (hash === encoding.NULL_HASH)
return;
entry = this.cacheHash.get(hash);
if (entry)
return entry;
raw = yield this.db.get(layout.e(hash));
if (!raw)
return;
entry = ChainEntry.fromRaw(this.chain, raw);
// There's no efficient way to check whether
// this is in the main chain or not, so
// don't add it to the height cache.
this.cacheHash.set(entry.hash, entry);
return entry;
});
/**
* Retrieve a chain entry.
* @param {Number|Hash} block - Height or hash.
* @returns {Promise} - Returns {@link ChainEntry}.
*/
ChainDB.prototype.getEntry = function getEntry(block) {
if (typeof block === 'number')
return this.getEntryByHeight(block);
return this.getEntryByHash(block);
};
/**
* Test whether the chain contains a block.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns Boolean.
*/
ChainDB.prototype.hasEntry = co(function* hasEntry(hash) {
var height = yield this.getHeight(hash);
return height !== -1;
});
/**
* Retrieve the tip entry from the tip record.
* @returns {Promise} - Returns {@link ChainEntry}.
*/
ChainDB.prototype.getTip = function getTip() {
return this.getEntry(this.state.hash());
};
/**
* Retrieve the tip entry from the tip record.
* @method
* @returns {Promise} - Returns {@link ChainState}.
*/
ChainDB.prototype.getState = co(function* getState() {
var data = yield this.db.get(layout.R);
if (!data)
return;
return ChainState.fromRaw(data);
});
/**
* Write genesis block to database.
* @method
* @returns {Promise}
*/
ChainDB.prototype.saveGenesis = co(function* saveGenesis() {
var genesis = this.network.genesisBlock;
var block = Block.fromRaw(genesis, 'hex');
var entry = ChainEntry.fromBlock(this.chain, block);
this.logger.info('Writing genesis block to ChainDB.');
yield this.save(entry, block, new CoinView());
});
/**
* Retrieve the database flags.
* @method
* @returns {Promise} - Returns {@link ChainFlags}.
*/
ChainDB.prototype.getFlags = co(function* getFlags() {
var data = yield this.db.get(layout.O);
if (!data)
return;
return ChainFlags.fromRaw(data);
});
/**
* Verify current options against db options.
* @method
* @returns {Promise}
*/
ChainDB.prototype.verifyFlags = co(function* verifyFlags() {
var flags = yield this.getFlags();
assert(flags, 'No flags found.');
flags.verify(this.options);
if (this.options.forceWitness)
yield this.saveFlags();
});
/**
* Get state caches.
* @method
* @returns {Promise} - Returns {@link StateCache}.
*/
ChainDB.prototype.getStateCache = co(function* getStateCache() {
var stateCache = new StateCache(this.network);
var i, items, item, key, bit, hash, state;
items = yield this.db.range({
gte: layout.v(0, encoding.ZERO_HASH),
lte: layout.v(255, encoding.MAX_HASH),
values: true
});
for (i = 0; i &lt; items.length; i++) {
item = items[i];
key = layout.vv(item.key);
bit = key[0];
hash = key[1];
state = item.value[0];
stateCache.insert(bit, hash, state);
}
return stateCache;
});
/**
* Save deployment table.
* @returns {Promise}
*/
ChainDB.prototype.saveDeployments = function saveDeployments() {
var batch = this.db.batch();
this.writeDeployments(batch);
return batch.write();
};
/**
* Save deployment table.
* @returns {Promise}
*/
ChainDB.prototype.writeDeployments = function writeDeployments(batch) {
var bw = new StaticWriter(1 + 9 * this.network.deploys.length);
var i, deployment;
bw.writeU8(this.network.deploys.length);
for (i = 0; i &lt; this.network.deploys.length; i++) {
deployment = this.network.deploys[i];
bw.writeU8(deployment.bit);
bw.writeU32(deployment.startTime);
bw.writeU32(deployment.timeout);
}
batch.put(layout.V, bw.render());
};
/**
* Check for outdated deployments.
* @method
* @private
* @returns {Promise}
*/
ChainDB.prototype.checkDeployments = co(function* checkDeployments() {
var raw = yield this.db.get(layout.V);
var invalid = [];
var i, br, count, deployment;
var bit, start, timeout;
assert(raw, 'No deployment table found.');
br = new BufferReader(raw);
count = br.readU8();
for (i = 0; i &lt; count; i++) {
bit = br.readU8();
start = br.readU32();
timeout = br.readU32();
deployment = this.network.byBit(bit);
if (deployment
&amp;&amp; start === deployment.startTime
&amp;&amp; timeout === deployment.timeout) {
continue;
}
invalid.push(bit);
}
return invalid;
});
/**
* Potentially invalidate state cache.
* @method
* @returns {Promise}
*/
ChainDB.prototype.verifyDeployments = co(function* verifyDeployments() {
var invalid = yield this.checkDeployments();
var i, bit, batch;
if (invalid.length === 0)
return true;
batch = this.db.batch();
for (i = 0; i &lt; invalid.length; i++) {
bit = invalid[i];
this.logger.warning('Versionbit deployment params modified.');
this.logger.warning('Invalidating cache for bit %d.', bit);
yield this.invalidateCache(bit, batch);
}
this.writeDeployments(batch);
yield batch.write();
return false;
});
/**
* Invalidate state cache.
* @method
* @private
* @returns {Promise}
*/
ChainDB.prototype.invalidateCache = co(function* invalidateCache(bit, batch) {
var i, keys, key;
keys = yield this.db.keys({
gte: layout.v(bit, encoding.ZERO_HASH),
lte: layout.v(bit, encoding.MAX_HASH)
});
for (i = 0; i &lt; keys.length; i++) {
key = keys[i];
batch.del(key);
}
});
/**
* Get the _next_ block hash (does not work by height).
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link Hash}.
*/
ChainDB.prototype.getNextHash = co(function* getNextHash(hash) {
var data = yield this.db.get(layout.n(hash));
if (!data)
return;
return data.toString('hex');
});
/**
* Check to see if a block is on the main chain.
* @method
* @param {ChainEntry|Hash} hash
* @returns {Promise} - Returns Boolean.
*/
ChainDB.prototype.isMainChain = co(function* isMainChain(hash) {
var entry;
assert(typeof hash === 'string');
if (hash === this.chain.tip.hash
|| hash === this.network.genesis.hash) {
return true;
}
if (hash === encoding.NULL_HASH)
return false;
entry = this.cacheHash.get(hash);
if (entry) {
entry = this.cacheHeight.get(entry.height);
if (entry)
return entry.hash === hash;
}
if (yield this.getNextHash(hash))
return true;
return false;
});
/**
* Get all entries.
* @returns {Promise} - Returns {@link ChainEntry}[].
*/
ChainDB.prototype.getEntries = function getEntries() {
var self = this;
return this.db.values({
gte: layout.e(encoding.ZERO_HASH),
lte: layout.e(encoding.MAX_HASH),
parse: function(value) {
return ChainEntry.fromRaw(self.chain, value);
}
});
};
/**
* Get all tip hashes.
* @returns {Promise} - Returns {@link Hash}[].
*/
ChainDB.prototype.getTips = function getTips() {
return this.db.keys({
gte: layout.p(encoding.ZERO_HASH),
lte: layout.p(encoding.MAX_HASH),
parse: layout.pp
});
};
/**
* Get a coin (unspents only).
* @method
* @param {Hash} hash
* @param {Number} index
* @returns {Promise} - Returns {@link Coin}.
*/
ChainDB.prototype.getCoin = co(function* getCoin(hash, index) {
var state = this.state;
var raw;
if (this.options.spv)
return;
raw = this.coinCache.get(hash);
if (raw)
return Coins.parseCoin(raw, hash, index);
raw = yield this.db.get(layout.c(hash));
if (!raw)
return;
if (state === this.state)
this.coinCache.set(hash, raw);
return Coins.parseCoin(raw, hash, index);
});
/**
* Get coins (unspents only).
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link Coins}.
*/
ChainDB.prototype.getCoins = co(function* getCoins(hash) {
var raw;
if (this.options.spv)
return;
raw = this.coinCache.get(hash);
if (raw)
return Coins.fromRaw(raw, hash);
raw = yield this.db.get(layout.c(hash));
if (!raw)
return;
return Coins.fromRaw(raw, hash);
});
/**
* Check whether coins are still unspent. Necessary for bip30.
* @see https://bitcointalk.org/index.php?topic=67738.0
* @param {Hash} hash
* @returns {Promise} - Returns Boolean.
*/
ChainDB.prototype.hasCoins = function hasCoins(hash) {
return this.db.has(layout.c(hash));
};
/**
* Get coin viewpoint.
* @method
* @param {TX} tx
* @returns {Promise} - Returns {@link CoinView}.
*/
ChainDB.prototype.getCoinView = co(function* getCoinView(tx) {
var view = new CoinView();
var prevout = tx.getPrevout();
var i, hash, coins;
for (i = 0; i &lt; prevout.length; i++) {
hash = prevout[i];
coins = yield this.getCoins(hash);
if (!coins) {
coins = new Coins();
coins.hash = hash;
view.add(coins);
continue;
}
view.add(coins);
}
return view;
});
/**
* Get coin viewpoint (historical).
* @method
* @param {TX} tx
* @returns {Promise} - Returns {@link CoinView}.
*/
ChainDB.prototype.getSpentView = co(function* getSpentView(tx) {
var view = yield this.getCoinView(tx);
var entries = view.toArray();
var i, coins, meta;
for (i = 0; i &lt; entries.length; i++) {
coins = entries[i];
if (!coins.isEmpty())
continue;
meta = yield this.getMeta(coins.hash);
if (!meta)
continue;
view.addTX(meta.tx, meta.height);
}
return view;
});
/**
* Get coins necessary to be resurrected during a reorg.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link Coin}[].
*/
ChainDB.prototype.getUndoCoins = co(function* getUndoCoins(hash) {
var data = yield this.db.get(layout.u(hash));
if (!data)
return new UndoCoins();
return UndoCoins.fromRaw(data);
});
/**
* Retrieve a block from the database (not filled with coins).
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link Block}.
*/
ChainDB.prototype.getBlock = co(function* getBlock(hash) {
var data = yield this.getRawBlock(hash);
if (!data)
return;
return Block.fromRaw(data);
});
/**
* Retrieve a block from the database (not filled with coins).
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link Block}.
*/
ChainDB.prototype.getRawBlock = co(function* getRawBlock(block) {
var hash;
if (this.options.spv)
return;
hash = yield this.getHash(block);
if (!hash)
return;
return yield this.db.get(layout.b(hash));
});
/**
* Get a historical block coin viewpoint.
* @method
* @param {Block} hash
* @returns {Promise} - Returns {@link CoinView}.
*/
ChainDB.prototype.getBlockView = co(function* getBlockView(block) {
var view = new CoinView();
var undo = yield this.getUndoCoins(block.hash());
var i, j, tx, input, prev, coins;
if (undo.isEmpty())
return view;
for (i = block.txs.length - 1; i > 0; i--) {
tx = block.txs[i];
for (j = tx.inputs.length - 1; j >= 0; j--) {
input = tx.inputs[j];
prev = input.prevout.hash;
if (!view.has(prev)) {
assert(!undo.isEmpty());
if (undo.top().height === -1) {
coins = new Coins();
coins.hash = prev;
coins.coinbase = false;
view.add(coins);
}
}
undo.apply(view, input.prevout);
}
}
// Undo coins should be empty.
assert(undo.isEmpty(), 'Undo coins data inconsistency.');
return view;
});
/**
* Get a transaction with metadata.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link TXMeta}.
*/
ChainDB.prototype.getMeta = co(function* getMeta(hash) {
var data;
if (!this.options.indexTX)
return;
data = yield this.db.get(layout.t(hash));
if (!data)
return;
return TXMeta.fromRaw(data);
});
/**
* Retrieve a transaction.
* @method
* @param {Hash} hash
* @returns {Promise} - Returns {@link TX}.
*/
ChainDB.prototype.getTX = co(function* getTX(hash) {
var meta = yield this.getMeta(hash);
if (!meta)
return;
return meta.tx;
});
/**
* @param {Hash} hash
* @returns {Promise} - Returns Boolean.
*/
ChainDB.prototype.hasTX = function hasTX(hash) {
if (!this.options.indexTX)
return Promise.resolve();
return this.db.has(layout.t(hash));
};
/**
* Get all coins pertinent to an address.
* @method
* @param {Address[]} addresses
* @returns {Promise} - Returns {@link Coin}[].
*/
ChainDB.prototype.getCoinsByAddress = co(function* getCoinsByAddress(addresses) {
var coins = [];
var i, j, address, hash, keys, key, coin;
if (!this.options.indexAddress)
return coins;
if (!Array.isArray(addresses))
addresses = [addresses];
for (i = 0; i &lt; addresses.length; i++) {
address = addresses[i];
hash = Address.getHash(address);
if (!hash)
continue;
keys = yield this.db.keys({
gte: layout.C(hash, encoding.ZERO_HASH, 0),
lte: layout.C(hash, encoding.MAX_HASH, 0xffffffff),
parse: layout.Cc
});
for (j = 0; j &lt; keys.length; j++) {
key = keys[j];
coin = yield this.getCoin(key[0], key[1]);
if (coin)
coins.push(coin);
}
}
return coins;
});
/**
* Get all transaction hashes to an address.
* @method
* @param {Address[]} addresses
* @returns {Promise} - Returns {@link Hash}[].
*/
ChainDB.prototype.getHashesByAddress = co(function* getHashesByAddress(addresses) {
var hashes = {};
var i, address, hash;
if (!this.options.indexTX || !this.options.indexAddress)
return [];
for (i = 0; i &lt; addresses.length; i++) {
address = addresses[i];
hash = Address.getHash(address);
if (!hash)
continue;
yield this.db.keys({
gte: layout.T(hash, encoding.ZERO_HASH),
lte: layout.T(hash, encoding.MAX_HASH),
parse: function(key) {
var hash = layout.Tt(key);
hashes[hash] = true;
}
});
}
return Object.keys(hashes);
});
/**
* Get all transactions pertinent to an address.
* @method
* @param {Address[]} addresses
* @returns {Promise} - Returns {@link TX}[].
*/
ChainDB.prototype.getTXByAddress = co(function* getTXByAddress(addresses) {
var mtxs = yield this.getMetaByAddress(addresses);
var out = [];
var i, mtx;
for (i = 0; i &lt; mtxs.length; i++) {
mtx = mtxs[i];
out.push(mtx.tx);
}
return out;
});
/**
* Get all transactions pertinent to an address.
* @method
* @param {Address[]} addresses
* @returns {Promise} - Returns {@link TXMeta}[].
*/
ChainDB.prototype.getMetaByAddress = co(function* getTXByAddress(addresses) {
var txs = [];
var i, hashes, hash, tx;
if (!this.options.indexTX || !this.options.indexAddress)
return txs;
if (!Array.isArray(addresses))
addresses = [addresses];
hashes = yield this.getHashesByAddress(addresses);
for (i = 0; i &lt; hashes.length; i++) {
hash = hashes[i];
tx = yield this.getMeta(hash);
if (tx)
txs.push(tx);
}
return txs;
});
/**
* Scan the blockchain for transactions containing specified address hashes.
* @method
* @param {Hash} start - Block hash to start at.
* @param {Bloom} filter - Bloom filter containing tx and address hashes.
* @param {Function} iter - Iterator.
* @returns {Promise}
*/
ChainDB.prototype.scan = co(function* scan(start, filter, iter) {
var total = 0;
var i, j, entry, hash, tx, txs, block;
var found, input, output, prevout;
if (start == null)
start = this.network.genesis.hash;
if (typeof start === 'number')
this.logger.info('Scanning from height %d.', start);
else
this.logger.info('Scanning from block %s.', util.revHex(start));
entry = yield this.getEntry(start);
if (!entry)
return;
if (!(yield entry.isMainChain()))
throw new Error('Cannot rescan an alternate chain.');
while (entry) {
block = yield this.getBlock(entry.hash);
txs = [];
total++;
if (!block) {
if (!this.options.spv &amp;&amp; !this.options.prune)
throw new Error('Block not found.');
yield iter(entry, txs);
entry = yield entry.getNext();
continue;
}
this.logger.info(
'Scanning block %s (%d).',
entry.rhash(), entry.height);
for (i = 0; i &lt; block.txs.length; i++) {
tx = block.txs[i];
found = false;
for (j = 0; j &lt; tx.outputs.length; j++) {
output = tx.outputs[j];
hash = output.getHash();
if (!hash)
continue;
if (filter.test(hash)) {
prevout = Outpoint.fromTX(tx, j);
filter.add(prevout.toRaw());
found = true;
}
}
if (found) {
txs.push(tx);
continue;
}
if (i === 0)
continue;
for (j = 0; j &lt; tx.inputs.length; j++) {
input = tx.inputs[j];
prevout = input.prevout;
if (filter.test(prevout.toRaw())) {
txs.push(tx);
break;
}
}
}
yield iter(entry, txs);
entry = yield entry.getNext();
}
this.logger.info('Finished scanning %d blocks.', total);
});
/**
* Save an entry to the database and optionally
* connect it as the tip. Note that this method
* does _not_ perform any verification which is
* instead performed in {@link Chain#add}.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView?} view - Will not connect if null.
* @returns {Promise}
*/
ChainDB.prototype.save = co(function* save(entry, block, view) {
this.start();
try {
yield this._save(entry, block, view);
} catch (e) {
this.drop();
throw e;
}
yield this.commit();
});
/**
* Save an entry without a batch.
* @method
* @private
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView?} view
* @returns {Promise}
*/
ChainDB.prototype._save = co(function* save(entry, block, view) {
var hash = block.hash();
// Hash->height index.
this.put(layout.h(hash), U32(entry.height));
// Entry data.
this.put(layout.e(hash), entry.toRaw());
this.cacheHash.push(entry.hash, entry);
// Tip index.
this.del(layout.p(entry.prevBlock));
this.put(layout.p(hash), DUMMY);
// Update state caches.
this.saveUpdates();
if (!view) {
// Save block data.
yield this.saveBlock(entry, block);
return;
}
// Hash->next-block index.
this.put(layout.n(entry.prevBlock), hash);
// Height->hash index.
this.put(layout.H(entry.height), hash);
this.cacheHeight.push(entry.height, entry);
// Connect block and save data.
yield this.saveBlock(entry, block, view);
// Commit new chain state.
this.put(layout.R, this.pending.commit(hash));
});
/**
* Reconnect the block to the chain.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView} view
* @returns {Promise}
*/
ChainDB.prototype.reconnect = co(function* reconnect(entry, block, view) {
this.start();
try {
yield this._reconnect(entry, block, view);
} catch (e) {
this.drop();
throw e;
}
yield this.commit();
});
/**
* Reconnect block without a batch.
* @method
* @private
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView} view
* @returns {Promise}
*/
ChainDB.prototype._reconnect = co(function* reconnect(entry, block, view) {
var hash = block.hash();
// We can now add a hash->next-block index.
this.put(layout.n(entry.prevBlock), hash);
// We can now add a height->hash index.
this.put(layout.H(entry.height), hash);
this.cacheHeight.push(entry.height, entry);
// Re-insert into cache.
this.cacheHash.push(entry.hash, entry);
// Update state caches.
this.saveUpdates();
// Connect inputs.
yield this.connectBlock(entry, block, view);
// Update chain state.
this.put(layout.R, this.pending.commit(hash));
});
/**
* Disconnect block from the chain.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @returns {Promise}
*/
ChainDB.prototype.disconnect = co(function* disconnect(entry, block) {
var view;
this.start();
try {
view = yield this._disconnect(entry, block);
} catch (e) {
this.drop();
throw e;
}
yield this.commit();
return view;
});
/**
* Disconnect block without a batch.
* @private
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @returns {Promise} - Returns {@link CoinView}.
*/
ChainDB.prototype._disconnect = co(function* disconnect(entry, block) {
var view;
// Remove hash->next-block index.
this.del(layout.n(entry.prevBlock));
// Remove height->hash index.
this.del(layout.H(entry.height));
this.cacheHeight.unpush(entry.height);
// Update state caches.
this.saveUpdates();
// Disconnect inputs.
view = yield this.disconnectBlock(entry, block);
// Revert chain state to previous tip.
this.put(layout.R, this.pending.commit(entry.prevBlock));
return view;
});
/**
* Save state cache updates.
* @private
*/
ChainDB.prototype.saveUpdates = function saveUpdates() {
var updates = this.stateCache.updates;
var i, update;
if (updates.length === 0)
return;
this.logger.info('Saving %d state cache updates.', updates.length);
for (i = 0; i &lt; updates.length; i++) {
update = updates[i];
this.put(layout.v(update.bit, update.hash), update.toRaw());
}
};
/**
* Reset the chain to a height or hash. Useful for replaying
* the blockchain download for SPV.
* @method
* @param {Hash|Number} block - hash/height
* @returns {Promise}
*/
ChainDB.prototype.reset = co(function* reset(block) {
var entry = yield this.getEntry(block);
var tip;
if (!entry)
throw new Error('Block not found.');
if (!(yield entry.isMainChain()))
throw new Error('Cannot reset on alternate chain.');
if (this.options.prune)
throw new Error('Cannot reset when pruned.');
// We need to remove all alternate
// chains first. This is ugly, but
// it's the only safe way to reset
// the chain.
yield this.removeChains();
tip = yield this.getTip();
assert(tip);
this.logger.debug('Resetting main chain to: %s', entry.rhash());
for (;;) {
this.start();
// Stop once we hit our target tip.
if (tip.hash === entry.hash) {
this.put(layout.R, this.pending.commit(tip.hash));
yield this.commit();
break;
}
assert(!tip.isGenesis());
// Revert the tip index.
this.del(layout.p(tip.hash));
this.put(layout.p(tip.prevBlock), DUMMY);
// Remove all records (including
// main-chain-only records).
this.del(layout.H(tip.height));
this.del(layout.h(tip.hash));
this.del(layout.e(tip.hash));
this.del(layout.n(tip.prevBlock));
// Disconnect and remove block data.
try {
yield this.removeBlock(tip);
} catch (e) {
this.drop();
throw e;
}
// Revert chain state to previous tip.
this.put(layout.R, this.pending.commit(tip.prevBlock));
yield this.commit();
// Update caches _after_ successful commit.
this.cacheHeight.remove(tip.height);
this.cacheHash.remove(tip.hash);
tip = yield this.getEntry(tip.prevBlock);
assert(tip);
}
return tip;
});
/**
* Remove all alternate chains.
* @method
* @returns {Promise}
*/
ChainDB.prototype.removeChains = co(function* removeChains() {
var tips = yield this.getTips();
var i;
// Note that this has to be
// one giant atomic write!
this.start();
try {
for (i = 0; i &lt; tips.length; i++)
yield this._removeChain(tips[i]);
} catch (e) {
this.drop();
throw e;
}
yield this.commit();
});
/**
* Remove an alternate chain.
* @method
* @private
* @param {Hash} hash - Alternate chain tip.
* @returns {Promise}
*/
ChainDB.prototype._removeChain = co(function* removeChain(hash) {
var tip = yield this.getEntry(hash);
if (!tip)
throw new Error('Alternate chain tip not found.');
this.logger.debug('Removing alternate chain: %s.', tip.rhash());
for (;;) {
if (yield tip.isMainChain())
break;
assert(!tip.isGenesis());
// Remove all non-main-chain records.
this.del(layout.p(tip.hash));
this.del(layout.h(tip.hash));
this.del(layout.e(tip.hash));
this.del(layout.b(tip.hash));
// Queue up hash to be removed
// on successful write.
this.cacheHash.unpush(tip.hash);
tip = yield this.getEntry(tip.prevBlock);
assert(tip);
}
});
/**
* Save a block (not an entry) to the
* database and potentially connect the inputs.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView?} view
* @returns {Promise} - Returns {@link Block}.
*/
ChainDB.prototype.saveBlock = co(function* saveBlock(entry, block, view) {
var hash = block.hash();
if (this.options.spv)
return;
// Write actual block data (this may be
// better suited to flat files in the future).
this.put(layout.b(hash), block.toRaw());
if (!view)
return;
yield this.connectBlock(entry, block, view);
});
/**
* Remove a block (not an entry) to the database.
* Disconnect inputs.
* @method
* @param {ChainEntry} entry
* @returns {Promise} - Returns {@link Block}.
*/
ChainDB.prototype.removeBlock = co(function* removeBlock(entry) {
var block;
if (this.options.spv)
return;
block = yield this.getBlock(entry.hash);
if (!block)
throw new Error('Block not found.');
this.del(layout.b(block.hash()));
return yield this.disconnectBlock(entry, block);
});
/**
* Commit coin view to database.
* @private
* @param {CoinView} view
*/
ChainDB.prototype.saveView = function saveView(view) {
var i, coins, raw;
view = view.toArray();
for (i = 0; i &lt; view.length; i++) {
coins = view[i];
if (coins.isEmpty()) {
this.del(layout.c(coins.hash));
this.coinCache.unpush(coins.hash);
} else {
raw = coins.toRaw();
this.put(layout.c(coins.hash), raw);
this.coinCache.push(coins.hash, raw);
}
}
};
/**
* Connect block inputs.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @param {CoinView} view
* @returns {Promise} - Returns {@link Block}.
*/
ChainDB.prototype.connectBlock = co(function* connectBlock(entry, block, view) {
var hash = block.hash();
var i, j, tx, input, output;
if (this.options.spv)
return;
this.pending.connect(block);
// Genesis block's coinbase is unspendable.
if (this.chain.isGenesis(block))
return;
// Update chain state value.
for (i = 0; i &lt; block.txs.length; i++) {
tx = block.txs[i];
if (i > 0) {
for (j = 0; j &lt; tx.inputs.length; j++) {
input = tx.inputs[j];
this.pending.spend(view.getOutput(input));
}
}
for (j = 0; j &lt; tx.outputs.length; j++) {
output = tx.outputs[j];
if (output.script.isUnspendable())
continue;
this.pending.add(output);
}
// Index the transaction if enabled.
this.indexTX(tx, view, entry, i);
}
// Commit new coin state.
this.saveView(view);
// Write undo coins (if there are any).
if (!view.undo.isEmpty())
this.put(layout.u(hash), view.undo.commit());
// Prune height-288 if pruning is enabled.
yield this.pruneBlock(entry);
});
/**
* Disconnect block inputs.
* @method
* @param {ChainEntry} entry
* @param {Block} block
* @returns {Promise} - Returns {@link CoinView}.
*/
ChainDB.prototype.disconnectBlock = co(function* disconnectBlock(entry, block) {
var view = new CoinView();
var hash = block.hash();
var i, j, undo, tx, input, output;
if (this.options.spv)
return view;
undo = yield this.getUndoCoins(hash);
this.pending.disconnect(block);
// Disconnect all transactions.
for (i = block.txs.length - 1; i >= 0; i--) {
tx = block.txs[i];
if (i > 0) {
yield view.ensureInputs(this, tx);
for (j = tx.inputs.length - 1; j >= 0; j--) {
input = tx.inputs[j];
undo.apply(view, input.prevout);
this.pending.add(view.getOutput(input));
}
}
// Remove any created coins.
view.removeTX(tx, entry.height);
for (j = tx.outputs.length - 1; j >= 0; j--) {
output = tx.outputs[j];
if (output.script.isUnspendable())
continue;
this.pending.spend(output);
}
// Remove from transaction index.
this.unindexTX(tx, view);
}
// Undo coins should be empty.
assert(undo.isEmpty(), 'Undo coins data inconsistency.');
// Commit new coin state.
this.saveView(view);
// Remove undo coins.
this.del(layout.u(hash));
return view;
});
/**
* Prune a block from the chain and
* add current block to the prune queue.
* @method
* @private
* @param {ChainEntry} entry
* @returns {Promise}
*/
ChainDB.prototype.pruneBlock = co(function* pruneBlock(entry) {
var height, hash;
if (this.options.spv)
return;
if (!this.options.prune)
return;
height = entry.height - this.network.block.keepBlocks;
if (height &lt;= this.network.block.pruneAfterHeight)
return;
hash = yield this.getHash(height);
if (!hash)
return;
this.del(layout.b(hash));
this.del(layout.u(hash));
});
/**
* Save database options.
* @returns {Promise}
*/
ChainDB.prototype.saveFlags = function saveFlags() {
var flags = ChainFlags.fromOptions(this.options);
return this.db.put(layout.O, flags.toRaw());
};
/**
* Index a transaction by txid and address.
* @private
* @param {TX} tx
* @param {CoinView} view
* @param {ChainEntry} entry
* @param {Number} index
*/
ChainDB.prototype.indexTX = function indexTX(tx, view, entry, index) {
var hash = tx.hash();
var i, meta, input, output;
var prevout, hashes, addr;
if (this.options.indexTX) {
meta = TXMeta.fromTX(tx, entry, index);
this.put(layout.t(hash), meta.toRaw());
if (this.options.indexAddress) {
hashes = tx.getHashes(view);
for (i = 0; i &lt; hashes.length; i++) {
addr = hashes[i];
this.put(layout.T(addr, hash), DUMMY);
}
}
}
if (!this.options.indexAddress)
return;
if (!tx.isCoinbase()) {
for (i = 0; i &lt; tx.inputs.length; i++) {
input = tx.inputs[i];
prevout = input.prevout;
addr = view.getOutput(input).getHash();
if (!addr)
continue;
this.del(layout.C(addr, prevout.hash, prevout.index));
}
}
for (i = 0; i &lt; tx.outputs.length; i++) {
output = tx.outputs[i];
addr = output.getHash();
if (!addr)
continue;
this.put(layout.C(addr, hash, i), DUMMY);
}
};
/**
* Remove transaction from index.
* @private
* @param {TX} tx
* @param {CoinView} view
*/
ChainDB.prototype.unindexTX = function unindexTX(tx, view) {
var hash = tx.hash();
var i, input, output, prevout, hashes, addr;
if (this.options.indexTX) {
this.del(layout.t(hash));
if (this.options.indexAddress) {
hashes = tx.getHashes(view);
for (i = 0; i &lt; hashes.length; i++) {
addr = hashes[i];
this.del(layout.T(addr, hash));
}
}
}
if (!this.options.indexAddress)
return;
if (!tx.isCoinbase()) {
for (i = 0; i &lt; tx.inputs.length; i++) {
input = tx.inputs[i];
prevout = input.prevout;
addr = view.getOutput(input).getHash();
if (!addr)
continue;
this.put(layout.C(addr, prevout.hash, prevout.index), DUMMY);
}
}
for (i = 0; i &lt; tx.outputs.length; i++) {
output = tx.outputs[i];
addr = output.getHash();
if (!addr)
continue;
this.del(layout.C(addr, hash, i));
}
};
/**
* Chain Flags
* @alias module:blockchain.ChainFlags
* @constructor
*/
function ChainFlags(options) {
if (!(this instanceof ChainFlags))
return new ChainFlags(options);
this.network = Network.primary;
this.spv = false;
this.witness = true;
this.prune = false;
this.indexTX = false;
this.indexAddress = false;
if (options)
this.fromOptions(options);
}
ChainFlags.prototype.fromOptions = function fromOptions(options) {
this.network = Network.get(options.network);
if (options.spv != null) {
assert(typeof options.spv === 'boolean');
this.spv = options.spv;
}
if (options.prune != null) {
assert(typeof options.prune === 'boolean');
this.prune = options.prune;
}
if (options.indexTX != null) {
assert(typeof options.indexTX === 'boolean');
this.indexTX = options.indexTX;
}
if (options.indexAddress != null) {
assert(typeof options.indexAddress === 'boolean');
this.indexAddress = options.indexAddress;
}
return this;
};
ChainFlags.fromOptions = function fromOptions(data) {
return new ChainFlags().fromOptions(data);
};
ChainFlags.prototype.verify = function verify(options) {
if (options.network !== this.network)
throw new Error('Network mismatch for chain.');
if (options.spv &amp;&amp; !this.spv)
throw new Error('Cannot retroactively enable SPV.');
if (!options.spv &amp;&amp; this.spv)
throw new Error('Cannot retroactively disable SPV.');
if (!options.forceWitness) {
if (!this.witness)
throw new Error('Cannot retroactively enable witness.');
}
if (options.prune &amp;&amp; !this.prune)
throw new Error('Cannot retroactively prune.');
if (!options.prune &amp;&amp; this.prune)
throw new Error('Cannot retroactively unprune.');
if (options.indexTX &amp;&amp; !this.indexTX)
throw new Error('Cannot retroactively enable TX indexing.');
if (!options.indexTX &amp;&amp; this.indexTX)
throw new Error('Cannot retroactively disable TX indexing.');
if (options.indexAddress &amp;&amp; !this.indexAddress)
throw new Error('Cannot retroactively enable address indexing.');
if (!options.indexAddress &amp;&amp; this.indexAddress)
throw new Error('Cannot retroactively disable address indexing.');
};
ChainFlags.prototype.toRaw = function toRaw() {
var bw = new StaticWriter(12);
var flags = 0;
if (this.spv)
flags |= 1 &lt;&lt; 0;
if (this.witness)
flags |= 1 &lt;&lt; 1;
if (this.prune)
flags |= 1 &lt;&lt; 2;
if (this.indexTX)
flags |= 1 &lt;&lt; 3;
if (this.indexAddress)
flags |= 1 &lt;&lt; 4;
bw.writeU32(this.network.magic);
bw.writeU32(flags);
bw.writeU32(0);
return bw.render();
};
ChainFlags.prototype.fromRaw = function fromRaw(data) {
var br = new BufferReader(data);
var flags;
this.network = Network.fromMagic(br.readU32());
flags = br.readU32();
this.spv = (flags &amp; 1) !== 0;
this.witness = (flags &amp; 2) !== 0;
this.prune = (flags &amp; 4) !== 0;
this.indexTX = (flags &amp; 8) !== 0;
this.indexAddress = (flags &amp; 16) !== 0;
return this;
};
ChainFlags.fromRaw = function fromRaw(data) {
return new ChainFlags().fromRaw(data);
};
/**
* Chain State
* @alias module:blockchain.ChainState
* @constructor
*/
function ChainState() {
this.tip = encoding.ZERO_HASH;
this.tx = 0;
this.coin = 0;
this.value = 0;
this.committed = false;
}
ChainState.prototype.hash = function() {
return this.tip.toString('hex');
};
ChainState.prototype.rhash = function() {
return util.revHex(this.hash());
};
ChainState.prototype.clone = function clone() {
var state = new ChainState();
state.tip = this.tip;
state.tx = this.tx;
state.coin = this.coin;
state.value = this.value;
return state;
};
ChainState.prototype.connect = function connect(block) {
this.tx += block.txs.length;
};
ChainState.prototype.disconnect = function connect(block) {
this.tx -= block.txs.length;
};
ChainState.prototype.add = function add(coin) {
this.coin++;
this.value += coin.value;
};
ChainState.prototype.spend = function spend(coin) {
this.coin--;
this.value -= coin.value;
};
ChainState.prototype.commit = function commit(hash) {
if (typeof hash === 'string')
hash = new Buffer(hash, 'hex');
this.tip = hash;
this.committed = true;
return this.toRaw();
};
ChainState.prototype.toRaw = function toRaw() {
var bw = new StaticWriter(56);
bw.writeHash(this.tip);
bw.writeU64(this.tx);
bw.writeU64(this.coin);
bw.writeU64(this.value);
return bw.render();
};
ChainState.fromRaw = function fromRaw(data) {
var state = new ChainState();
var br = new BufferReader(data);
state.tip = br.readHash();
state.tx = br.readU53();
state.coin = br.readU53();
state.value = br.readU53();
return state;
};
/**
* StateCache
* @alias module:blockchain.StateCache
* @constructor
*/
function StateCache(network) {
this.network = network;
this.bits = [];
this.updates = [];
this._init();
}
StateCache.prototype._init = function _init() {
var i, deployment;
for (i = 0; i &lt; 32; i++)
this.bits.push(null);
for (i = 0; i &lt; this.network.deploys.length; i++) {
deployment = this.network.deploys[i];
assert(!this.bits[deployment.bit]);
this.bits[deployment.bit] = {};
}
};
StateCache.prototype.set = function set(bit, entry, state) {
var cache = this.bits[bit];
assert(cache);
if (cache[entry.hash] !== state) {
cache[entry.hash] = state;
this.updates.push(new CacheUpdate(bit, entry.hash, state));
}
};
StateCache.prototype.get = function get(bit, entry) {
var cache = this.bits[bit];
var state;
assert(cache);
state = cache[entry.hash];
if (state == null)
return -1;
return state;
};
StateCache.prototype.commit = function commit() {
this.updates.length = 0;
};
StateCache.prototype.drop = function drop() {
var i, update, cache;
for (i = 0; i &lt; this.updates.length; i++) {
update = this.updates[i];
cache = this.bits[update.bit];
assert(cache);
delete cache[update.hash];
}
this.updates.length = 0;
};
StateCache.prototype.insert = function insert(bit, hash, state) {
var cache = this.bits[bit];
assert(cache);
cache[hash] = state;
};
/**
* CacheUpdate
* @constructor
* @ignore
*/
function CacheUpdate(bit, hash, state) {
this.bit = bit;
this.hash = hash;
this.state = state;
}
CacheUpdate.prototype.toRaw = function toRaw() {
return U8(this.state);
};
/*
* Helpers
*/
function getSize(value) {
return value.length + 80;
}
/*
* Expose
*/
module.exports = ChainDB;
</code></pre>
</article>
</section>
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href="module-hd.PublicKey.html">PublicKey</a></li><li><a href="module-http.Base.html">Base</a></li><li><a href="module-http.Client.html">Client</a></li><li><a href="module-http.HTTPBaseOptions.html">HTTPBaseOptions</a></li><li><a href="module-http.HTTPOptions.html">HTTPOptions</a></li><li><a href="module-http.Request.html">Request</a></li><li><a href="module-http.RPC.html">RPC</a></li><li><a href="module-http.RPCClient.html">RPCClient</a></li><li><a href="module-http.Server.html">Server</a></li><li><a href="module-http.Wallet.html">Wallet</a></li><li><a href="module-mempool.ConfirmStats.html">ConfirmStats</a></li><li><a href="module-mempool.Mempool.html">Mempool</a></li><li><a href="module-mempool.MempoolEntry.html">MempoolEntry</a></li><li><a href="module-mempool.MempoolOptions.html">MempoolOptions</a></li><li><a href="module-mempool.PolicyEstimator.html">PolicyEstimator</a></li><li><a href="module-mining.BlockEntry.html">BlockEntry</a></li><li><a href="module-mining.Miner.html">Miner</a></li><li><a href="module-mining.MinerBlock.html">MinerBlock</a></li><li><a href="module-mining.MinerOptions.html">MinerOptions</a></li><li><a href="module-net.AuthDB.html">AuthDB</a></li><li><a href="module-net.BIP150.html">BIP150</a></li><li><a href="module-net.BIP151.html">BIP151</a></li><li><a href="module-net.BIP151Stream.html">BIP151Stream</a></li><li><a href="module-net.BroadcastItem.html">BroadcastItem</a></li><li><a href="module-net.Framer.html">Framer</a></li><li><a href="module-net.HostEntry.html">HostEntry</a></li><li><a href="module-net.HostList.html">HostList</a></li><li><a href="module-net.Parser.html">Parser</a></li><li><a href="module-net.Peer.html">Peer</a></li><li><a href="module-net.PeerList.html">PeerList</a></li><li><a href="module-net.PeerOptions.html">PeerOptions</a></li><li><a href="module-net.Pool.html">Pool</a></li><li><a href="module-net.PoolOptions.html">PoolOptions</a></li><li><a href="module-net_bip152-CompactBlock.html">CompactBlock</a></li><li><a href="module-net_bip152-PrefilledTX.html">PrefilledTX</a></li><li><a href="module-net_bip152-TXRequest.html">TXRequest</a></li><li><a href="module-net_bip152-TXResponse.html">TXResponse</a></li><li><a href="module-net_packets-AddrPacket.html">AddrPacket</a></li><li><a href="module-net_packets-AuthChallengePacket.html">AuthChallengePacket</a></li><li><a href="module-net_packets-AuthProposePacket.html">AuthProposePacket</a></li><li><a href="module-net_packets-AuthReplyPacket.html">AuthReplyPacket</a></li><li><a href="module-net_packets-BlockPacket.html">BlockPacket</a></li><li><a href="module-net_packets-BlockTxnPacket.html">BlockTxnPacket</a></li><li><a href="module-net_packets-CmpctBlockPacket.html">CmpctBlockPacket</a></li><li><a href="module-net_packets-EncackPacket.html">EncackPacket</a></li><li><a href="module-net_packets-EncinitPacket.html">EncinitPacket</a></li><li><a href="module-net_packets-FeeFilterPacket.html">FeeFilterPacket</a></li><li><a href="module-net_packets-FilterAddPacket.html">FilterAddPacket</a></li><li><a href="module-net_packets-FilterClearPacket.html">FilterClearPacket</a></li><li><a href="module-net_packets-FilterLoadPacket.html">FilterLoadPacket</a></li><li><a href="module-net_packets-GetAddrPacket.html">GetAddrPacket</a></li><li><a href="module-net_packets-GetBlocksPacket.html">GetBlocksPacket</a></li><li><a href="module-net_packets-GetBlockTxnPacket.html">GetBlockTxnPacket</a></li><li><a href="module-net_packets-GetDataPacket.html">GetDataPacket</a></li><li><a href="module-net_packets-GetHeadersPacket.html">GetHeadersPacket</a></li><li><a href="module-net_packets-HeadersPacket.html">HeadersPacket</a></li><li><a href="module-net_packets-InvPacket.html">InvPacket</a></li><li><a href="module-net_packets-MempoolPacket.html">MempoolPacket</a></li><li><a href="module-net_packets-MerkleBlockPacket.html">MerkleBlockPacket</a></li><li><a href="module-net_packets-NotFoundPacket.html">NotFoundPacket</a></li><li><a href="module-net_packets-Packet.html">Packet</a></li><li><a href="module-net_packets-PingPacket.html">PingPacket</a></li><li><a href="module-net_packets-PongPacket.html">PongPacket</a></li><li><a href="module-net_packets-RejectPacket.html">RejectPacket</a></li><li><a href="module-net_packets-SendCmpctPacket.html">SendCmpctPacket</a></li><li><a href="module-net_packets-SendHeadersPacket.html">SendHeadersPacket</a></li><li><a href="module-net_packets-TXPacket.html">TXPacket</a></li><li><a href="module-net_packets-UnknownPacket.html">UnknownPacket</a></li><li><a href="module-net_packets-VerackPacket.html">VerackPacket</a></li><li><a href="module-net_packets-VersionPacket.html">VersionPacket</a></li><li><a href="module-net_socks-Proxy.html">Proxy</a></li><li><a href="module-net_socks-SOCKS.html">SOCKS</a></li><li><a href="module-node.FullNode.html">FullNode</a></li><li><a href="module-node.Logger.html">Logger</a></li><li><a href="module-node.Node.html">Node</a></li><li><a href="module-node.NodeClient.html">NodeClient</a></li><li><a href="module-node.SPVNode.html">SPVNode</a></li><li><a href="module-primitives.AbstractBlock.html">AbstractBlock</a></li><li><a href="module-primitives.Address.html">Address</a></li><li><a href="module-primitives.Block.html">Block</a></li><li><a href="module-primitives.Coin.html">Coin</a></li><li><a href="module-primitives.CoinSelector.html">CoinSelector</a></li><li><a href="module-primitives.Headers.html">Headers</a></li><li><a href="module-primitives.Input.html">Input</a></li><li><a href="module-primitives.InvItem.html">InvItem</a></li><li><a href="module-primitives.KeyRing.html">KeyRing</a></li><li><a href="module-primitives.MemBlock.html">MemBlock</a></li><li><a href="module-primitives.MerkleBlock.html">MerkleBlock</a></li><li><a href="module-primitives.MTX.html">MTX</a></li><li><a href="module-primitives.NetAddress.html">NetAddress</a></li><li><a href="module-primitives.Outpoint.html">Outpoint</a></li><li><a href="module-primitives.Output.html">Output</a></li><li><a href="module-primitives.TX.html">TX</a></li><li><a href="module-primitives.TXMeta.html">TXMeta</a></li><li><a href="module-protocol.Network.html">Network</a></li><li><a href="module-protocol.TimeData.html">TimeData</a></li><li><a href="module-protocol_errors-VerifyError.html">VerifyError</a></li><li><a href="module-protocol_errors-VerifyResult.html">VerifyResult</a></li><li><a href="module-script.Opcode.html">Opcode</a></li><li><a href="module-script.Program.html">Program</a></li><li><a href="module-script.Script.html">Script</a></li><li><a href="module-script.ScriptError.html">ScriptError</a></li><li><a href="module-script.SigCache.html">SigCache</a></li><li><a href="module-script.Stack.html">Stack</a></li><li><a href="module-script.Witness.html">Witness</a></li><li><a href="module-utils.AsyncEmitter.html">AsyncEmitter</a></li><li><a href="module-utils.AsyncObject.html">AsyncObject</a></li><li><a href="module-utils.Bloom.html">Bloom</a></li><li><a href="module-utils.BufferReader.html">BufferReader</a></li><li><a href="module-utils.BufferWriter.html">BufferWriter</a></li><li><a href="module-utils.List.html">List</a></li><li><a href="module-utils.ListItem.html">ListItem</a></li><li><a href="module-utils.Lock.html">Lock</a></li><li><a href="module-utils.LRU.html">LRU</a></li><li><a href="module-utils.LRUBatch.html">LRUBatch</a></li><li><a href="module-utils.LRUItem.html">LRUItem</a></li><li><a href="module-utils.LRUOp.html">LRUOp</a></li><li><a href="module-utils.Map.html">Map</a></li><li><a href="module-utils.MappedLock.html">MappedLock</a></li><li><a href="module-utils.RollingFilter.html">RollingFilter</a></li><li><a href="module-utils.StaticWriter.html">StaticWriter</a></li><li><a href="module-utils_ip.Address.html">Address</a></li><li><a href="module-utils_protobuf-ProtoReader.html">ProtoReader</a></li><li><a href="module-utils_protobuf-ProtoWriter.html">ProtoWriter</a></li><li><a href="module-wallet.Account.html">Account</a></li><li><a href="module-wallet.Balance.html">Balance</a></li><li><a href="module-wallet.BlockRecord.html">BlockRecord</a></li><li><a href="module-wallet.ChainState.html">ChainState</a></li><li><a href="module-wallet.Credit.html">Credit</a></li><li><a href="module-wallet.Details.html">Details</a></li><li><a href="module-wallet.DetailsMember.html">DetailsMember</a></li><li><a href="module-wallet.MasterKey.html">MasterKey</a></li><li><a href="module-wallet.Path.html">Path</a></li><li><a href="module-wallet.TXDB.html">TXDB</a></li><li><a href="module-wallet.Wallet.html">Wallet</a></li><li><a href="module-wallet.WalletClient.html">WalletClient</a></li><li><a href="module-wallet.WalletDB.html">WalletDB</a></li><li><a href="module-wallet.WalletKey.html">WalletKey</a></li><li><a href="module-wallet.WalletOptions.html">WalletOptions</a></li><li><a href="module-wallet_records-BlockMapRecord.html">BlockMapRecord</a></li><li><a href="module-wallet_records-BlockMeta.html">BlockMeta</a></li><li><a href="module-wallet_records-ChainState.html">ChainState</a></li><li><a href="module-wallet_records-OutpointMapRecord.html">OutpointMapRecord</a></li><li><a href="module-wallet_records-PathMapRecord.html">PathMapRecord</a></li><li><a href="module-wallet_records-TXMapRecord.html">TXMapRecord</a></li><li><a href="module-wallet_records-TXRecord.html">TXRecord</a></li><li><a href="module-workers.Framer.html">Framer</a></li><li><a href="module-workers.Master.html">Master</a></li><li><a href="module-workers.Parser.html">Parser</a></li><li><a href="module-workers.ParserClient.html">ParserClient</a></li><li><a href="module-workers.Worker.html">Worker</a></li><li><a href="module-workers.WorkerPool.html">WorkerPool</a></li><li><a href="module-workers_packets-ECSignPacket.html">ECSignPacket</a></li><li><a href="module-workers_packets-ECSignResultPacket.html">ECSignResultPacket</a></li><li><a href="module-workers_packets-ECVerifyPacket.html">ECVerifyPacket</a></li><li><a href="module-workers_packets-ECVerifyResultPacket.html">ECVerifyResultPacket</a></li><li><a href="module-workers_packets-ErrorPacket.html">ErrorPacket</a></li><li><a href="module-workers_packets-ErrorResultPacket.html">ErrorResultPacket</a></li><li><a href="module-workers_packets-EventPacket.html">EventPacket</a></li><li><a href="module-workers_packets-LogPacket.html">LogPacket</a></li><li><a href="module-workers_packets-MinePacket.html">MinePacket</a></li><li><a href="module-workers_packets-MineResultPacket.html">MineResultPacket</a></li><li><a href="module-workers_packets-Packet.html">Packet</a></li><li><a href="module-workers_packets-ScryptPacket.html">ScryptPacket</a></li><li><a href="module-workers_packets-ScryptResultPacket.html">ScryptResultPacket</a></li><li><a href="module-workers_packets-SignInputPacket.html">SignInputPacket</a></li><li><a href="module-workers_packets-SignInputResultPacket.html">SignInputResultPacket</a></li><li><a href="module-workers_packets-SignPacket.html">SignPacket</a></li><li><a href="module-workers_packets-SignResultPacket.html">SignResultPacket</a></li><li><a href="module-workers_packets-VerifyInputPacket.html">VerifyInputPacket</a></li><li><a href="module-workers_packets-VerifyInputResultPacket.html">VerifyInputResultPacket</a></li><li><a href="module-workers_packets-VerifyPacket.html">VerifyPacket</a></li><li><a href="module-workers_packets-VerifyResultPacket.html">VerifyResultPacket</a></li></ul><h3>Namespaces</h3><ul><li><a href="module-crypto_pk.ecdsa.html">ecdsa</a></li><li><a href="module-crypto_pk.rsa.html">rsa</a></li></ul><h3>Global</h3><ul><li><a href="global.html"></a></li><li><a href="global.html#DoubleMap">DoubleMap</a></li><li><a href="global.html#StatEntry">StatEntry</a></li></ul>
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