gecko-dev/toolkit/modules/ServiceRequest.jsm

53 строки
1.7 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* This module consolidates various code and data update requests, so flags
* can be set, Telemetry collected, etc. in a central place.
*/
const { Log } = ChromeUtils.import("resource://gre/modules/Log.jsm");
const { XPCOMUtils } = ChromeUtils.import(
"resource://gre/modules/XPCOMUtils.jsm"
);
XPCOMUtils.defineLazyGlobalGetters(this, ["XMLHttpRequest"]);
var EXPORTED_SYMBOLS = ["ServiceRequest"];
const logger = Log.repository.getLogger("ServiceRequest");
logger.level = Log.Level.Debug;
logger.addAppender(new Log.ConsoleAppender(new Log.BasicFormatter()));
/**
* ServiceRequest is intended to be a drop-in replacement for current users
* of XMLHttpRequest.
*
* @param {Object} options - Options for underlying XHR, e.g. { mozAnon: bool }
*/
class ServiceRequest extends XMLHttpRequest {
constructor(options) {
super(options);
}
/**
* Opens an XMLHttpRequest, and sets the NSS "beConservative" flag.
* Requests are always async.
*
* @param {String} method - HTTP method to use, e.g. "GET".
* @param {String} url - URL to open.
* @param {Object} options - Additional options (reserved for future use).
*/
open(method, url, options) {
super.open(method, url, true);
// Disable cutting edge features, like TLS 1.3, where middleboxes might brick us
if (super.channel instanceof Ci.nsIHttpChannelInternal) {
super.channel.QueryInterface(
Ci.nsIHttpChannelInternal
).beConservative = true;
}
}
}