tough-cookie
Advanced tools
The tough-cookie npm package is a robust and flexible implementation of HTTP cookies, allowing for the parsing, manipulation, and serialization of cookie headers. It provides a way to manage cookies for HTTP clients, including support for persistence, cookie jars, and the ability to handle various cookie-related operations as per the RFC 6265 standard.
Cookie Parsing
This feature allows for the parsing of cookie header strings into Cookie objects, which can then be manipulated or stored.
const Cookie = require('tough-cookie').Cookie;
const cookie = Cookie.parse('key=value; expires=Wed, 09 Jun 2021 10:18:14 GMT');Cookie Serialization
This feature enables the serialization of Cookie objects back into HTTP header strings, which can be used in HTTP requests.
const Cookie = require('tough-cookie').Cookie;
const cookie = new Cookie({key: 'value', domain: 'example.com', path: '/'});
const header = cookie.toString();Cookie Jar
The Cookie Jar feature allows for the storage and retrieval of cookies across multiple requests, maintaining state and handling cookie scope such as domain and path.
const { CookieJar } = require('tough-cookie');
const jar = new CookieJar();
jar.setCookieSync('key=value; Domain=example.com', 'http://example.com', { http: true });Cookie Store Persistence
This feature provides a way to persist cookies between sessions by using a file-based store or other custom store implementations.
const { CookieJar, FileCookieStore } = require('tough-cookie');
const jar = new CookieJar(new FileCookieStore('cookies.json'));
// Cookies within the jar will be persisted to 'cookies.json' file.js-cookie is a simple, lightweight JavaScript API for handling cookies. It works well in the browser and has a simpler API but does not have the Node.js environment support or the advanced features such as cookie jars and persistence that tough-cookie offers.
The cookie npm package is a simple server-side cookie parsing and serialization library. It is more minimalistic compared to tough-cookie and does not provide a cookie jar or persistence features.
The cookies package is designed for use with Node.js HTTP servers. It provides cookie parsing and serialization similar to tough-cookie but is tailored for server-side use and does not include a cookie jar implementation.
RFC6265 Cookies for Node.js
var cookies = require('tough-cookie'); // note: not 'cookie', 'cookies' or 'node-cookie'
var Cookie = cookies.Cookie;
var cookie = Cookie.parse(header);
cookie.value = 'somethingdifferent';
header = cookie.toString();
var cookiejar = new cookies.CookieJar();
cookiejar.setCookie(cookie, 'http://currentdomain.example.com/path', cb);
// ...
cookiejar.getCookies('http://example.com/otherpath',function(err,cookies) {
res.headers['cookie'] = cookies.join('; ');
});
It's so easy!
npm install tough-cookie
Requires punycode, which should get installed automatically for you.
Why the name? NPM modules cookie, cookies and cookiejar were already taken.
Functions on the module you get from require('tough-cookie'). All can be used as pure functions and don't need to be "bound".
Parse a cookie date string into a Date. Parses according to RFC6265 Section 5.1.1, not Date.parse().
Format a Date into a RFC1123 string (the RFC6265-recommended format).
Transforms a domain-name into a canonical domain-name. The canonical domain-name is a trimmed, lowercased, stripped-of-leading-dot and optionally punycode-encoded domain-name (Section 5.1.2 of RFC6265). For the most part, this function is idempotent (can be run again on its output without ill effects).
Answers "does this real domain match the domain in a cookie?". The str is the "current" domain-name and the domStr is the "cookie" domain-name. Matches according to RFC6265 Section 5.1.3, but it helps to think of it as a "suffix match".
The canonicalize parameter will run the other two paramters through canonicalDomain or not.
Given a current request/response path, gives the Path apropriate for storing in a cookie. This is basically the "directory" of a "file" in the path, but is specified by Section 5.1.4 of the RFC.
The path parameter MUST be only the pathname part of a URI (i.e. excludes the hostname, query, fragment, etc.). This is the .pathname property of node's uri.parse() output.
Answers "does the request-path path-match a given cookie-path?" as per RFC6265 Section 5.1.4. Returns a boolean.
This is essentially a prefix-match where cookiePath is a prefix of reqPath.
alias for Cookie.parse(header[,strict])
alias for Cookie.fromJSON(string)
Parses a single Cookie or Set-Cookie HTTP header into a Cookie object. Returns undefined if the string can't be parsed. If in strict mode, returns undefined if the cookie doesn't follow the guidelines in section 4 of RFC6265. Generally speaking, strict mode can be used to validate your own generated Set-Cookie headers, but acting as a client you want to be lenient and leave strict mode off.
Here's how to process the Set-Cookie header(s) on a node HTTP/HTTPS response:
if (res.headers['set-cookie'] instanceof Array)
cookies = res.headers['set-cookie'].map(Cookie.parse);
else
cookies = [Cookie.parse(res.headers['set-cookie'])];
Convert a JSON string to a Cookie object. Mainly useful for parsing the dates in a JSON.stringify()-ed Cookie.
Date - if set, the Expires= attribute of the cookie (defaults to Infinity)Max-Age= attribute in seconds of the cookie.Domain= attribute of the cookiePath= of the cookieSecure cookie flagHttpOnly cookie flagArray - any unrecognized cookie attributes as strings (even if equal-signs inside)After a cookie has been passed through CookieJar.setCookie() it will have the following additional attributes:
Date - when this cookie was added to the jarDate - last time the cookie got accessed. Will affect cookie cleaning once implemented. Using cookiejar.getCookies(...) will update this attribute.encode to a Set-Cookie header value. The Expires cookie field is set using formatDate(), but is omitted entirely if .expires is Infinity.
encode to a Cookie header value (i.e. the .key and .value properties joined with '=').
sets the expiry based on a date-string passed through parseDate()
Computes the absolute unix-epoch milliseconds that this cookie expires (or a Date object in the case of expiryDate()). Note that in both cases now should be milliseconds.
Max-Age takes precedence over Expires (as per the RFC). The .created attribute -- or, by default, the now paramter -- is used to offset the .maxAge attribute.
If Expires (.expires) is set, that's returned.
Otherwise, expiryTime() returns Infinity and expiryDate() returns a Date object for "Tue, 19 Jan 2038 03:14:07 GMT" (latest date that can be expressed by a 32-bit time_t; the common limit for most user-agents).
compute the TTL relative to now (milliseconds). Date.now() is used by default. The same precedence rules as for expiryTime apply.
return the canonicalized .domain field. This is lower-cased and punycode (RFC3490) encoded if the domain has any non-ASCII characters.
Status: IN PROGRESS. Works for a few things, but is by no means comprehensive.
validates cookie attributes for semantic correctness. Useful for "lint" checking any Set-Cookie headers you generate. For now, it returns a boolean, but eventually could return a reason string -- you can future-proof with this construct:
if (cookie.validate() === true) {
// it's tasty
} else {
// yuck!
}
true)Since eventually this module would like to support database/remote/etc. CookieJars, continuation passing style is used for CookieJar methods.
Attempt to set the cookie in the cookie jar. If the operation fails, an error will be given to the callback cb, otherwise the cookie is passed through. The cookie will have updated .created, .lastAccessed and .hostOnly properties.
The options object can be omitted. Options are:
true - indicates if this is an HTTP or non-HTTP API. Affects HttpOnly cookies.false - perform extra checkscalled internally by setCookie. This is likely to be the "hook" that fancy CookieJars override.
Retrieve the list of cookies that can be sent in a Cookie header for the current url.
If an error is encountered, that's passed as err to the callback, otherwise an Array of Cookie objects is passed.
The options object can be omitted. If the url starts with https: or wss: then {secure:true} is implied for the options. Disable this by passing {secure:false}. If you want to simulate a non-HTTP API, pass the option {http:false}, otherwise it defaults to true.
The .lastAccessed property of the returned cookies will have been updated.
Accepts the same options as .getCookies() but passes a string suitable for a Cookie header rather than an array to the callback.
cdomain()
punycode requirement implements RFC3492, but RFC6265 requires RFC5891validate()?(tl;dr: MIT with some MPL/1.1)
Copyright GoInstant, Inc. and other contributors. All rights reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Portions may be licensed under different licenses (in particular public-suffix.txt is MPL/1.1); please read the LICENSE file for full details.
FAQs
RFC6265 Cookies and Cookie Jar for node.js
The npm package tough-cookie receives a total of 30,802,577 weekly downloads. As such, tough-cookie popularity was classified as popular.
We found that tough-cookie demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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