175 lines
2.6 KiB
JavaScript
175 lines
2.6 KiB
JavaScript
/*!
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* common.js - p2p constants for hsd
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* Copyright (c) 2017-2018, Christopher Jeffrey (MIT License).
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* https://github.com/handshake-org/hsd
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*/
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'use strict';
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/**
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* @module net/common
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*/
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const pkg = require('../pkg');
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/**
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* Default protocol version.
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* @const {Number}
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* @default
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*/
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exports.PROTOCOL_VERSION = 1;
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/**
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* Minimum protocol version we're willing to talk to.
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* @const {Number}
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* @default
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*/
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exports.MIN_VERSION = 1;
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/**
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* Service bits.
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* @enum {Number}
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* @default
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*/
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exports.services = {
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/**
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* Whether network services are enabled.
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*/
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NETWORK: 1 << 0,
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/**
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* Whether the peer supports BIP37.
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*/
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BLOOM: 1 << 1
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};
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/**
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* Our node's services (we support everything).
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* @const {Number}
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* @default
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*/
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exports.LOCAL_SERVICES = 0
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| exports.services.NETWORK;
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/**
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* Required services (network and segwit).
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* @const {Number}
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* @default
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*/
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exports.REQUIRED_SERVICES = 0
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| exports.services.NETWORK;
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/**
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* Default user agent: `/[pkg.name]:[version]/`.
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* @const {String}
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* @default
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*/
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exports.USER_AGENT = `/${pkg.name}:${pkg.version}/`;
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/**
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* Max message size (~4mb with segwit, formerly 2mb)
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* @const {Number}
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* @default
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*/
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exports.MAX_MESSAGE = 8 * 1000 * 1000;
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/**
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* Amount of time to ban misbheaving peers.
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* @const {Number}
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* @default
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*/
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exports.BAN_TIME = 24 * 60 * 60;
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/**
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* Ban score threshold before ban is placed in effect.
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* @const {Number}
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* @default
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*/
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exports.BAN_SCORE = 100;
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/**
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* Create a nonce.
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* @returns {Buffer}
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*/
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exports.nonce = function nonce() {
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const data = Buffer.allocUnsafe(8);
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data.writeUInt32LE((Math.random() * 0x100000000) >>> 0, 0);
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data.writeUInt32LE((Math.random() * 0x100000000) >>> 0, 4);
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return data;
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};
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/**
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* A compressed pubkey of all zeroes.
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* @const {Buffer}
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* @default
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*/
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exports.ZERO_KEY = Buffer.alloc(33, 0x00);
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/**
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* A 64 byte signature of all zeroes.
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* @const {Buffer}
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* @default
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*/
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exports.ZERO_SIG = Buffer.alloc(64, 0x00);
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/**
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* 8 zero bytes.
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* @const {Buffer}
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* @default
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*/
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exports.ZERO_NONCE = Buffer.alloc(8, 0x00);
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/**
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* Maximum inv/getdata size.
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* @const {Number}
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* @default
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*/
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exports.MAX_INV = 50000;
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/**
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* Maximum number of requests.
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* @const {Number}
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* @default
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*/
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exports.MAX_REQUEST = 5000;
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/**
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* Maximum number of block requests.
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* @const {Number}
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* @default
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*/
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exports.MAX_BLOCK_REQUEST = 50000 + 1000;
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/**
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* Maximum number of tx requests.
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* @const {Number}
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* @default
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*/
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exports.MAX_TX_REQUEST = 10000;
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/**
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* Maximum number of claim requests.
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* @const {Number}
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* @default
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*/
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exports.MAX_CLAIM_REQUEST = 1000;
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