ethers.js/misc/admin/lib/geturl.js
2021-03-30 19:55:25 -04:00

130 lines
4.7 KiB
JavaScript

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getUrl = void 0;
const http_1 = __importDefault(require("http"));
const https_1 = __importDefault(require("https"));
const url_1 = require("url");
function getResponse(request) {
return new Promise((resolve, reject) => {
request.once("response", (resp) => {
const response = {
statusCode: resp.statusCode,
statusMessage: resp.statusMessage,
headers: Object.keys(resp.headers).reduce((accum, name) => {
let value = resp.headers[name];
if (Array.isArray(value)) {
value = value.join(", ");
}
accum[name] = value;
return accum;
}, {}),
body: null
};
//resp.setEncoding("utf8");
resp.on("data", (chunk) => {
if (response.body == null) {
response.body = new Uint8Array(0);
}
const body = new Uint8Array(response.body.length + chunk.length);
body.set(response.body, 0);
body.set(chunk, response.body.length);
response.body = body;
});
resp.on("end", () => {
resolve(response);
});
resp.on("error", (error) => {
/* istanbul ignore next */
error.response = response;
reject(error);
});
});
request.on("error", (error) => { reject(error); });
});
}
// The URL.parse uses null instead of the empty string
function nonnull(value) {
if (value == null) {
return "";
}
return value;
}
function staller(duration) {
return new Promise((resolve) => {
const timer = setTimeout(resolve, duration);
timer.unref();
});
}
function _getUrl(href, options) {
return __awaiter(this, void 0, void 0, function* () {
if (options == null) {
options = {};
}
// @TODO: Once we drop support for node 8, we can pass the href
// firectly into request and skip adding the components
// to this request object
const url = url_1.parse(href);
const request = {
protocol: nonnull(url.protocol),
hostname: nonnull(url.hostname),
port: nonnull(url.port),
path: (nonnull(url.pathname) + nonnull(url.search)),
method: (options.method || "GET"),
headers: (options.headers || {}),
};
if (options.user && options.password) {
request.auth = `${options.user}:${options.password}`;
}
let req = null;
switch (nonnull(url.protocol)) {
case "http:":
req = http_1.default.request(request);
break;
case "https:":
req = https_1.default.request(request);
break;
default:
/* istanbul ignore next */
throw new Error(`unsupported protocol ${url.protocol}`);
}
if (options.body) {
req.write(Buffer.from(options.body));
}
req.end();
const response = yield getResponse(req);
return response;
});
}
function getUrl(href, options) {
return __awaiter(this, void 0, void 0, function* () {
let error = null;
for (let i = 0; i < 3; i++) {
try {
const result = yield Promise.race([
_getUrl(href, options),
staller(30000).then((result) => { throw new Error("timeout"); })
]);
return result;
}
catch (e) {
error = e;
}
yield staller(1000);
}
throw error;
});
}
exports.getUrl = getUrl;