85 lines
2.0 KiB
JavaScript
85 lines
2.0 KiB
JavaScript
'use strict';
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var util = require('util');
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var EventEmitter = require('eventemitter2').EventEmitter2;
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var bitcore = require('bitcore');
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var Networks = bitcore.Networks;
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var $ = bitcore.util.preconditions;
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var _ = bitcore.deps._;
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var p2p = require('bitcore-p2p');
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var Peer = p2p.Peer;
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var messages = new p2p.Messages();
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function NetworkMonitor(eventBus, peer) {
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$.checkArgument(eventBus);
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$.checkArgument(peer);
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this.bus = eventBus;
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this.peer = peer;
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this.setupPeer(peer);
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}
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util.inherits(NetworkMonitor, EventEmitter);
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NetworkMonitor.create = function(eventBus, opts) {
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opts = opts || {};
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var host = opts.host || 'localhost';
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var port = opts.port || Networks.defaultNetwork.port;
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var peer = new Peer({
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host: host,
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port: port,
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network: Networks.defaultNetwork
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});
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return new NetworkMonitor(eventBus, peer);
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};
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NetworkMonitor.prototype.setupPeer = function(peer) {
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var self = this;
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peer.on('ready', function() {
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self.emit('ready');
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});
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peer.on('inv', function(m) {
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// TODO only ask for data if tx or block is unknown
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peer.sendMessage(messages.GetData(m.inventory));
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});
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peer.on('tx', function(m) {
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self.bus.process(m.transaction)
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.catch(function(err) {
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self.abort(err);
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});
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});
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peer.on('block', function(m) {
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self.bus.process(m.block)
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.catch(function(err) {
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self.abort(err);
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});
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});
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peer.on('error', function(err) {
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self.emit('error', err);
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self.abort(err);
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});
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peer.on('disconnect', function() {
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self.emit('disconnect');
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});
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};
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NetworkMonitor.prototype.requestBlocks = function(start) {
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$.checkArgument(_.isString(start), 'start must be a block hash string');
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this.peer.sendMessage(messages.GetBlocks([start]));
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};
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NetworkMonitor.prototype.start = function() {
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this.peer.connect();
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};
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NetworkMonitor.prototype.stop = function(reason) {
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this.peer.disconnect();
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console.log('Stopping network, reason:', reason);
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};
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NetworkMonitor.prototype.abort = function(reason) {
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this.peer.disconnect();
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throw reason;
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};
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module.exports = NetworkMonitor;
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