import { Client, factory } from "@lumeweb/libkernel-universal"; import { hexToBuf } from "@siaweb/libweb"; import backoff from "backoff"; export class SwarmClient extends Client { useDefaultSwarm; id = 0; _autoReconnect; _connectBackoff; _ready; constructor(useDefaultDht = true, autoReconnect = false) { super(); this.useDefaultSwarm = useDefaultDht; this._autoReconnect = autoReconnect; this._connectBackoff = backoff.fibonacci(); this._connectBackoff.on("ready", () => { this.start(); }); } get swarm() { return this.useDefaultSwarm ? undefined : this.id; } async connect(pubkey) { if (typeof pubkey === "string") { const buf = hexToBuf(pubkey); pubkey = this.handleErrorOrReturn(buf); } const resp = this.callModuleReturn("connect", { pubkey, swarm: this.swarm, }); return createSocket(resp.id); } async init() { const ret = await this.callModuleReturn("init", { swarm: this.swarm }); this._connectBackoff.reset(); return ret; } async ready() { if (this._ready) { return this._ready; } this.connectModule("listenConnections", { swarm: this.swarm }, async (socketId) => { this.emit("connection", await createSocket(socketId)); }); this._ready = this.callModuleReturn("ready", { swarm: this.swarm }); await this._ready; this._ready = undefined; } async start() { const backoff = () => setImmediate(() => this._connectBackoff.backoff()); try { await this.init(); } catch (e) { this.logErr(e); backoff(); return; } await this.ready(); } async addRelay(pubkey) { return this.callModuleReturn("addRelay", { pubkey, swarm: this.swarm }); } async removeRelay(pubkey) { return this.callModuleReturn("removeRelay", { pubkey, swarm: this.swarm }); } async clearRelays() { return this.callModuleReturn("clearRelays", { swarm: this.swarm }); } async getRelays() { return this.callModuleReturn("getRelays", { swarm: this.swarm }); } async join(topic) { this.callModule("join", { id: this.id, topic }); } } export class Socket extends Client { id; eventUpdates = {}; constructor(id) { super(); this.id = id; } _remotePublicKey; get remotePublicKey() { return this._remotePublicKey; } _rawStream; get rawStream() { return this._rawStream; } async setup() { let info = await this.callModuleReturn("socketGetInfo", { id: this.id }); this._remotePublicKey = info.remotePublicKey; this._rawStream = info.rawStream; } on(event, fn, context) { const [update, promise] = this.connectModule("socketListenEvent", { id: this.id, event: event }, (data) => { this.emit(event, data); }); this.trackEvent(event, update); promise.then(() => { this.off(event, fn); }); return super.on(event, fn, context); } off(event, fn, context, once) { const updates = [...this.eventUpdates[event]]; this.eventUpdates[event] = []; for (const func of updates) { func(); } return super.off(event, fn, context, once); } write(message) { this.callModule("socketWrite", { id: this.id, message }); } end() { this.callModule("socketExists", { id: this.id }).then(([exists]) => { if (exists) { this.callModule("socketClose", { id: this.id }); } }); } ensureEvent(event) { if (!(event in this.eventUpdates)) { this.eventUpdates[event] = []; } } trackEvent(event, update) { this.ensureEvent(event); this.eventUpdates[event].push(update); } } const MODULE = "_A7ClA0mSa1-Pg5c4V3C0H_fnhAFjgccITYT83Euc7t_9A"; export const createClient = factory(SwarmClient, MODULE); const socketFactory = factory(Socket, MODULE); const createSocket = async (...args) => { const socket = socketFactory(...args); await socket.setup(); return socket; };