ethers.js/lib.esm/providers/provider-ipcsocket.js
2022-12-30 16:35:04 -05:00

58 lines
1.8 KiB
JavaScript

import { connect } from "net";
import { SocketProvider } from "./provider-socket.js";
// @TODO: Is this sufficient? Is this robust? Will newlines occur between
// all payloads and only between payloads?
function splitBuffer(data) {
const messages = [];
let lastStart = 0;
while (true) {
const nl = data.indexOf(10, lastStart);
if (nl === -1) {
break;
}
messages.push(data.subarray(lastStart, nl).toString().trim());
lastStart = nl + 1;
}
return { messages, remaining: data.subarray(lastStart) };
}
export class IpcSocketProvider extends SocketProvider {
#socket;
get socket() { return this.#socket; }
constructor(path, network) {
super(network);
this.#socket = connect(path);
this.socket.on("ready", async () => {
try {
await this._start();
}
catch (error) {
console.log("failed to start IpcSocketProvider", error);
// @TODO: Now what? Restart?
}
});
let response = Buffer.alloc(0);
this.socket.on("data", (data) => {
response = Buffer.concat([response, data]);
const { messages, remaining } = splitBuffer(response);
messages.forEach((message) => {
this._processMessage(message);
});
response = remaining;
});
this.socket.on("end", () => {
this.emit("close");
this.socket.destroy();
this.socket.end();
});
}
destroy() {
this.socket.destroy();
this.socket.end();
super.destroy();
}
async _write(message) {
console.log(">>>", message);
this.socket.write(message);
}
}
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