106 lines
2.7 KiB
TypeScript
106 lines
2.7 KiB
TypeScript
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import { connect } from "net";
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import { SocketProvider } from "./provider-socket.js";
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import type { Socket } from "net";
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import type { Networkish } from "./network.js";
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// @TODO: Is this sufficient? Is this robust? Will newlines occur between
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// all payloads and only between payloads?
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function splitBuffer(data: Buffer): { messages: Array<string>, remaining: Buffer } {
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const messages: Array<string> = [ ];
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let lastStart = 0;
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while (true) {
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const nl = data.indexOf(10, lastStart);
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if (nl === -1) { break; }
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messages.push(data.subarray(lastStart, nl).toString().trim());
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lastStart = nl + 1;
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}
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return { messages, remaining: data.subarray(lastStart) };
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}
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export class IpcSocketProvider extends SocketProvider {
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#socket: Socket;
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get socket(): Socket { return this.#socket; }
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constructor(path: string, network?: Networkish) {
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super(network);
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this.#socket = connect(path);
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this.socket.on("ready", async () => {
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try {
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await this._start();
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} catch (error) {
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console.log("failed to start IpcSocketProvider", error);
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// @TODO: Now what? Restart?
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}
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});
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let response = Buffer.alloc(0);
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this.socket.on("data", (data) => {
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response = Buffer.concat([ response, data ]);
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const { messages, remaining } = splitBuffer(response);
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messages.forEach((message) => {
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this._processMessage(message);
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});
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response = remaining;
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});
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this.socket.on("end", () => {
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this.emit("close");
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this.socket.destroy();
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this.socket.end();
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});
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}
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stop(): void {
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this.socket.destroy();
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this.socket.end();
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}
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async _write(message: string): Promise<void> {
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console.log(">>>", message);
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this.socket.write(message);
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}
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}
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/*
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import { defineProperties } from "@ethersproject/properties";
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import { SocketLike, SocketProvider } from "./provider-socket.js";
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import type { Socket } from "net";
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export class SocketWrapper implements SocketLike {
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#socket: Socket;
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constructor(path: string) {
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this.#socket = connect(path);
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}
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send(data: string): void {
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this.#socket.write(data, () => { });
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}
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addEventListener(event: string, listener: (data: string) => void): void {
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//this.#socket.on(event, (value: ) => {
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//});
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}
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close(): void {
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}
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}
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export class IpcProvider extends SocketProvider {
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readonly path!: string;
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constructor(path: string) {
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super(new SocketWrapper(path));
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defineProperties<IpcProvider>(this, { path });
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}
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}
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*/
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