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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | 41x 41x 41x 41x 423x 41x 423x 423x 423x 20x 423x 401x 401x 401x 401x 423x 2x 423x 423x 3x 3x 3x 821x 821x 821x 2x 2x 426x 426x 426x 426x 426x 824x 824x 824x 824x | /* * Copyright © 2019 Lisk Foundation * * See the LICENSE file at the top-level directory of this distribution * for licensing information. * * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation, * no part of this software, including this file, may be copied, modified, * propagated, or distributed except according to the terms contained in the * LICENSE file. * * Removal or modification of this copyright notice is prohibited. * */ import { SCServerSocket } from 'socketcluster-server'; import { ConnectionKind, DEFAULT_PING_INTERVAL_MAX, DEFAULT_PING_INTERVAL_MIN, INTENTIONAL_DISCONNECT_CODE, } from '../constants'; import { EVENT_CLOSE_INBOUND, EVENT_INBOUND_SOCKET_ERROR, REMOTE_EVENT_PING, REMOTE_SC_EVENT_MESSAGE, REMOTE_SC_EVENT_RPC_REQUEST, } from '../events'; import { P2PPeerInfo } from '../p2p_types'; import { Peer, PeerConfig, SCServerSocketUpdated, socketErrorStatusCodes, } from './base'; const getRandomPingDelay = () => Math.random() * (DEFAULT_PING_INTERVAL_MAX - DEFAULT_PING_INTERVAL_MIN) + DEFAULT_PING_INTERVAL_MIN; export class InboundPeer extends Peer { protected _socket: SCServerSocketUpdated; protected readonly _handleInboundSocketError: (error: Error) => void; protected readonly _handleInboundSocketClose: ( code: number, reason: string | undefined, ) => void; private _pingTimeoutId: NodeJS.Timer; public constructor( peerInfo: P2PPeerInfo, peerSocket: SCServerSocket, peerConfig: PeerConfig, ) { super(peerInfo, peerConfig); this._peerInfo.internalState.connectionKind = ConnectionKind.INBOUND; this._handleInboundSocketError = (error: Error) => { this.emit(EVENT_INBOUND_SOCKET_ERROR, error); }; this._handleInboundSocketClose = (code, reasonMessage) => { const reason = reasonMessage ? reasonMessage : socketErrorStatusCodes[code] || 'Unknown reason'; Eif (this._pingTimeoutId) { clearTimeout(this._pingTimeoutId); } this.emit(EVENT_CLOSE_INBOUND, { peerInfo, code, reason, }); }; this._pingTimeoutId = setTimeout(() => { this._sendPing(); }, getRandomPingDelay()); this._socket = peerSocket; this._bindHandlersToInboundSocket(this._socket); } public set socket(scServerSocket: SCServerSocket) { this._unbindHandlersFromInboundSocket(this._socket); this._socket = scServerSocket as SCServerSocketUpdated; this._bindHandlersToInboundSocket(this._socket); } public disconnect( code: number = INTENTIONAL_DISCONNECT_CODE, reason?: string, ): void { super.disconnect(code, reason); clearTimeout(this._pingTimeoutId); this._unbindHandlersFromInboundSocket(this._socket); } private _sendPing(): void { const pingStart = Date.now(); this._socket.emit(REMOTE_EVENT_PING, undefined, () => { this._peerInfo.internalState.latency = Date.now() - pingStart; this._pingTimeoutId = setTimeout(() => { this._sendPing(); }, getRandomPingDelay()); }); } // All event handlers for the inbound socket should be bound in this method. private _bindHandlersToInboundSocket( inboundSocket: SCServerSocketUpdated, ): void { inboundSocket.on('close', this._handleInboundSocketClose); inboundSocket.on('error', this._handleInboundSocketError); inboundSocket.on('message', this._handleWSMessage); // Bind RPC and remote event handlers inboundSocket.on(REMOTE_SC_EVENT_RPC_REQUEST, this._handleRawRPC); inboundSocket.on(REMOTE_SC_EVENT_MESSAGE, this._handleRawMessage); } // All event handlers for the inbound socket should be unbound in this method. private _unbindHandlersFromInboundSocket( inboundSocket: SCServerSocket, ): void { inboundSocket.off('close', this._handleInboundSocketClose); inboundSocket.off('message', this._handleWSMessage); // Unbind RPC and remote event handlers inboundSocket.off(REMOTE_SC_EVENT_RPC_REQUEST, this._handleRawRPC); inboundSocket.off(REMOTE_SC_EVENT_MESSAGE, this._handleRawMessage); } } |