ethers.js/providers/ipc-provider.js
2020-01-03 19:01:29 -05:00

90 lines
3.6 KiB
JavaScript

"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
result["default"] = mod;
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
var net_1 = __importDefault(require("net"));
var json_rpc_provider_1 = require("./json-rpc-provider");
var properties_1 = require("../utils/properties");
var errors = __importStar(require("../errors"));
var IpcProvider = /** @class */ (function (_super) {
__extends(IpcProvider, _super);
function IpcProvider(path, network) {
var _this = this;
if (path == null) {
errors.throwError('missing path', errors.MISSING_ARGUMENT, {
argument: 'path'
});
}
_this = _super.call(this, 'ipc://' + path, network) || this;
errors.checkNew(_this, IpcProvider);
properties_1.defineReadOnly(_this, 'path', path);
return _this;
}
// @TODO: Create a connection to the IPC path and use filters instead of polling for block
IpcProvider.prototype.send = function (method, params) {
// 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).
var _this = this;
var payload = JSON.stringify({
method: method,
params: params,
id: 42,
jsonrpc: "2.0"
});
return new Promise(function (resolve, reject) {
var response = Buffer.alloc(0);
var stream = net_1.default.connect(_this.path);
stream.on('data', function (data) {
response = Buffer.concat([response, data]);
});
stream.on("end", function () {
try {
var payload_1 = JSON.parse(response.toString('utf8'));
if (payload_1.error) {
var error = new Error(payload_1.error.message);
error.code = payload_1.error.code;
error.data = payload_1.error.data;
reject(error);
}
else {
resolve(payload_1.result);
}
stream.destroy();
}
catch (error) {
reject(error);
stream.destroy();
}
});
stream.on('error', function (error) {
reject(error);
stream.destroy();
});
stream.write(payload);
stream.end();
});
};
return IpcProvider;
}(json_rpc_provider_1.JsonRpcProvider));
exports.IpcProvider = IpcProvider;