75 lines
2.1 KiB
TypeScript
75 lines
2.1 KiB
TypeScript
"use strict";
|
|
|
|
import net from "net";
|
|
|
|
import { defineReadOnly } from "@ethersproject/properties";
|
|
import { Networkish } from "@ethersproject/networks";
|
|
|
|
import { Logger } from "@ethersproject/logger";
|
|
import { version } from "./_version";
|
|
const logger = new Logger(version);
|
|
|
|
import { JsonRpcProvider } from "./json-rpc-provider";
|
|
|
|
|
|
export class IpcProvider extends JsonRpcProvider {
|
|
readonly path: string;
|
|
|
|
constructor(path: string, network?: Networkish) {
|
|
logger.checkNew(new.target, IpcProvider);
|
|
|
|
if (path == null) {
|
|
logger.throwError("missing path", Logger.errors.MISSING_ARGUMENT, { arg: "path" });
|
|
}
|
|
|
|
super("ipc://" + path, network);
|
|
|
|
defineReadOnly(this, "path", path);
|
|
}
|
|
|
|
// @TODO: Create a connection to the IPC path and use filters instead of polling for block
|
|
|
|
send(method: string, params: Array<any>): Promise<any> {
|
|
// This method is very simple right now. We create a new socket
|
|
// connection each time, which may be slower, but the main
|
|
// advantage we are aiming for now is security. This simplifies
|
|
// multiplexing requests (since we do not need to multiplex).
|
|
|
|
let payload = JSON.stringify({
|
|
method: method,
|
|
params: params,
|
|
id: 42,
|
|
jsonrpc: "2.0"
|
|
});
|
|
|
|
return new Promise((resolve, reject) => {
|
|
let response = Buffer.alloc(0);
|
|
|
|
let stream = net.connect(this.path);
|
|
|
|
stream.on("data", (data) => {
|
|
response = Buffer.concat([ response, data ]);
|
|
});
|
|
|
|
stream.on("end", () => {
|
|
try {
|
|
resolve(JSON.parse(response.toString()).result);
|
|
// @TODO: Better pull apart the error
|
|
stream.destroy();
|
|
} catch (error) {
|
|
reject(error);
|
|
stream.destroy();
|
|
}
|
|
});
|
|
|
|
stream.on("error", (error) => {
|
|
reject(error);
|
|
stream.destroy();
|
|
});
|
|
|
|
stream.write(payload);
|
|
stream.end();
|
|
});
|
|
}
|
|
}
|