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89 lines
3.0 KiB
Markdown
89 lines
3.0 KiB
Markdown
# cookie
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[![NPM Version][npm-version-image]][npm-url]
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[![NPM Downloads][npm-downloads-image]][npm-url]
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[![Node.js Version][node-image]][node-url]
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[![Build Status][ci-image]][ci-url]
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[![Coverage Status][coveralls-image]][coveralls-url]
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Basic HTTP cookie parser and serializer for HTTP servers.
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## Installation
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This is a [Node.js](https://nodejs.org/en/) module available through the
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[npm registry](https://www.npmjs.com/). Installation is done using the
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[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
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```sh
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$ npm install cookie
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```
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## API
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```js
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var cookie = require('cookie');
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```
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### cookie.parse(str, options)
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Parse an HTTP `Cookie` header string and returning an object of all cookie name-value pairs.
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The `str` argument is the string representing a `Cookie` header value and `options` is an
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optional object containing additional parsing options.
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```js
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var cookies = cookie.parse('foo=bar; equation=E%3Dmc%5E2');
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// { foo: 'bar', equation: 'E=mc^2' }
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```
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#### Options
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`cookie.parse` accepts these properties in the options object.
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##### decode
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Specifies a function that will be used to decode a cookie's value. Since the value of a cookie
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has a limited character set (and must be a simple string), this function can be used to decode
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a previously-encoded cookie value into a JavaScript string or other object.
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The default function is the global `decodeURIComponent`, which will decode any URL-encoded
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sequences into their byte representations.
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**note** if an error is thrown from this function, the original, non-decoded cookie value will
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be returned as the cookie's value.
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### cookie.serialize(name, value, options)
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Serialize a cookie name-value pair into a `Set-Cookie` header string. The `name` argument is the
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name for the cookie, the `value` argument is the value to set the cookie to, and the `options`
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argument is an optional object containing additional serialization options.
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```js
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var setCookie = cookie.serialize('foo', 'bar');
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// foo=bar
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```
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#### Options
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`cookie.serialize` accepts these properties in the options object.
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##### domain
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Specifies the value for the [`Domain` `Set-Cookie` attribute][rfc-6265-5.2.3]. By default, no
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domain is set, and most clients will consider the cookie to apply to only the current domain.
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##### encode
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Specifies a function that will be used to encode a cookie's value. Since value of a cookie
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has a limited character set (and must be a simple string), this function can be used to encode
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a value into a string suited for a cookie's value.
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The default function is the global `encodeURIComponent`, which will encode a JavaScript string
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into UTF-8 byte sequences and then URL-encode any that fall outside of the cookie range.
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##### expires
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Specifies the `Date` object to be the value for the [`Expires` `Set-Cookie` attribute][rfc-6265-5.2.1].
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By default, no expiration is set, and most clients will consider this a "non-persistent cookie" and
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will delete it on a condition like exiting a web browser application.
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**note** the [cookie storage model |