136 lines
2.1 KiB
JavaScript
136 lines
2.1 KiB
JavaScript
/*!
|
|
* common.js - p2p constants 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';
|
|
|
|
/**
|
|
* @module net/common
|
|
*/
|
|
|
|
const pkg = require('../pkg');
|
|
|
|
/**
|
|
* Default protocol version.
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.PROTOCOL_VERSION = 1;
|
|
|
|
/**
|
|
* Minimum protocol version we're willing to talk to.
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.MIN_VERSION = 1;
|
|
|
|
/**
|
|
* Service bits.
|
|
* @enum {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.services = {
|
|
/**
|
|
* Whether network services are enabled.
|
|
*/
|
|
|
|
NETWORK: 1 << 0,
|
|
|
|
/**
|
|
* Whether the peer supports BIP37.
|
|
*/
|
|
|
|
BLOOM: 1 << 1
|
|
};
|
|
|
|
/**
|
|
* Bcoin's services (we support everything).
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.LOCAL_SERVICES = 0
|
|
| exports.services.NETWORK;
|
|
|
|
/**
|
|
* Required services (network and segwit).
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.REQUIRED_SERVICES = 0
|
|
| exports.services.NETWORK;
|
|
|
|
/**
|
|
* Default user agent: `/bcoin:[version]/`.
|
|
* @const {String}
|
|
* @default
|
|
*/
|
|
|
|
exports.USER_AGENT = `/chainwork:${pkg.version}/`;
|
|
|
|
/**
|
|
* Max message size (~4mb with segwit, formerly 2mb)
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.MAX_MESSAGE = 4 * 1000 * 1000;
|
|
|
|
/**
|
|
* Amount of time to ban misbheaving peers.
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.BAN_TIME = 24 * 60 * 60;
|
|
|
|
/**
|
|
* Ban score threshold before ban is placed in effect.
|
|
* @const {Number}
|
|
* @default
|
|
*/
|
|
|
|
exports.BAN_SCORE = 100;
|
|
|
|
/**
|
|
* Create a nonce.
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.nonce = function nonce() {
|
|
const data = Buffer.allocUnsafe(8);
|
|
data.writeUInt32LE(Math.random() * 0x100000000, true, 0);
|
|
data.writeUInt32LE(Math.random() * 0x100000000, true, 4);
|
|
return data;
|
|
};
|
|
|
|
/**
|
|
* A compressed pubkey of all zeroes.
|
|
* @const {Buffer}
|
|
* @default
|
|
*/
|
|
|
|
exports.ZERO_KEY = Buffer.alloc(33, 0x00);
|
|
|
|
/**
|
|
* A 64 byte signature of all zeroes.
|
|
* @const {Buffer}
|
|
* @default
|
|
*/
|
|
|
|
exports.ZERO_SIG = Buffer.alloc(64, 0x00);
|
|
|
|
/**
|
|
* 8 zero bytes.
|
|
* @const {Buffer}
|
|
* @default
|
|
*/
|
|
|
|
exports.ZERO_NONCE = Buffer.alloc(8, 0x00);
|