You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

358 lines
9.9 KiB
Markdown

<h1 align="center">
<br>
<img width="360" src="https://rawgit.com/sindresorhus/got/master/media/logo.svg" alt="got">
<br>
<br>
<br>
</h1>
> Simplified HTTP/HTTPS requests
[![Build Status](https://travis-ci.org/sindresorhus/got.svg?branch=master)](https://travis-ci.org/sindresorhus/got) [![Coverage Status](https://coveralls.io/repos/sindresorhus/got/badge.svg?service=github&branch=master)](https://coveralls.io/github/sindresorhus/got?branch=master) [![Downloads](https://img.shields.io/npm/dm/got.svg?style=flat)](https://npmjs.com/got)
A nicer interface to the built-in [`http`](http://nodejs.org/api/http.html) module.
It supports following redirects, promises, streams, retries, automagically handling gzip/deflate and some convenience options.
Created because [`request`](https://github.com/mikeal/request) is bloated *(several megabytes!)*.
## Install
```
$ npm install --save got
```
## Usage
```js
const got = require('got');
// Callback mode
got('todomvc.com', (error, body, response) => {
console.log(body);
//=> '<!doctype html> ...'
});
// Promise mode
got('todomvc.com')
.then(response => {
console.log(response.body);
//=> '<!doctype html> ...'
})
.catch(error => {
console.log(error.response.body);
//=> 'Internal server error ...'
});
// Stream mode
got.stream('todomvc.com').pipe(fs.createWriteStream('index.html'));
// For POST, PUT and PATCH methods got.stream returns a WritableStream
fs.createReadStream('index.html').pipe(got.stream.post('todomvc.com'));
```
### API
It's a `GET` request by default, but can be changed in `options`.
#### got(url, [options], [callback])
Returns a Promise for a `response` object with a `body` property, a `url` property with the request URL or the final URL after redirects, and a `requestUrl` property with the original request URL.
Otherwise calls callback with `response` object (same as in previous case).
##### url
Type: `string`, `object`
The URL to request or a [`http.request` options](https://nodejs.org/api/http.html#http_http_request_options_callback) object.
Properties from `options` will override properties in the parsed `url`.
##### options
Type: `object`
Any of the [`http.request`](http://nodejs.org/api/http.html#http_http_request_options_callback) options.
###### body
Type: `string`, `buffer`, `readableStream`, `object`
*This is mutually exclusive with stream mode.*
Body that will be sent with a `POST` request.
If present in `options` and `options.method` is not set, `options.method` will be set to `POST`.
If `content-length` or `transfer-encoding` is not set in `options.headers` and `body` is a string or buffer, `content-length` will be set to the body length.
If `body` is a plain object, it will be stringified with [`querystring.stringify`](https://nodejs.org/api/querystring.html#querystring_querystring_stringify_obj_sep_eq_options) and sent as `application/x-www-form-urlencoded`.
###### encoding
Type: `string`, `null`
Default: `'utf8'`
Encoding to be used on `setEncoding` of the response data. If `null`, the body is returned as a Buffer.
###### json
Type: `boolean`
Default: `false`
*This is mutually exclusive with stream mode.*
Parse response body with `JSON.parse` and set `accept` header to `application/json`.
###### query
Type: `string`, `object`
Query string object that will be added to the request URL. This will override the query string in `url`.
###### timeout
Type: `number`
Milliseconds after which the request will be aborted and an error event with `ETIMEDOUT` code will be emitted.
###### retries
Type: `number`, `function`
Default: `5`
Number of request retries when network errors happens. Delays between retries counts with function `1000 * Math.pow(2, retry) + Math.random() * 100`, where `retry` is attempt number (starts from 0).
Option accepts `function` with `retry` and `error` arguments. Function must return delay in milliseconds (`0` return value cancels retry).
**Note:** if `retries` is `number`, `ENOTFOUND` and `ENETUNREACH` error will not be retried (see full list in [`is-retry-allowed`](https://github.com/floatdrop/is-retry-allowed/blob/master/index.js#L12) module).
###### followRedirect
Type: `boolean`<br>
Default: `true`
Defines if redirect responses should be followed automatically.
##### callback(error, data, response)
Function to be called when error or data are received. If omitted, a promise will be returned.
###### error
`Error` object with HTTP status code as `statusCode` property.
The data you requested.
###### response
The [response object](http://nodejs.org/api/http.html#http_http_incomingmessage).
When in stream mode, you can listen for events:
##### .on('request', request)
`request` event to get the request object of the request.
__Tip__: You can use `request` event to abort request:
```js
got.stream('github.com')
.on('request', req => setTimeout(() => req.abort(), 50));
```
##### .on('response', response)
`response` event to get the response object of the final request.
##### .on('redirect', response, nextOptions)
`redirect` event to get the response object of a redirect. The second argument is options for the next request to the redirect location.
##### .on('error', error, body, response)
`error` event emitted in case of protocol error (like `ENOTFOUND` etc.) or status error (4xx or 5xx). The second argument is the body of the server response in case of status error. The third argument is response object.
#### got.get(url, [options], [callback])
#### got.post(url, [options], [callback])
#### got.put(url, [options], [callback])
#### got.patch(url, [options], [callback])
#### got.head(url, [options], [callback])
#### got.delete(url, [options], [callback])
Sets `options.method` to the method name and makes a request.
## Errors
Each error contains (if available) `statusCode`, `statusMessage`, `host`, `hostname`, `method` and `path` properties to make debugging easier.
In Promise mode, the `response` is attached to the error.
#### got.RequestError
When a request fails. Contains a `code` property with error class code, like `ECONNREFUSED`.
#### got.ReadError
When reading from response stream fails.
#### got.ParseError
When `json` option is enabled and `JSON.parse` fails.
#### got.HTTPError
When server response code is not 2xx. Contains `statusCode` and `statusMessage`.
#### got.MaxRedirectsError
When server redirects you more than 10 times.
## Proxies
You can use the [`tunnel`](https://github.com/koichik/node-tunnel) module with the `agent` option to work with proxies:
```js
const got = require('got');
const tunnel = require('tunnel');
got('todomvc.com', {
agent: tunnel.httpOverHttp({
proxy: {
host: 'localhost'
}
})
}, () => {});
```
## Cookies
You can use the [`cookie`](https://github.com/jshttp/cookie) module to include cookies in a request:
```js
const got = require('got');
const cookie = require('cookie');
got('google.com', {
headers: {
cookie: cookie.serialize('foo', 'bar')
}
});
```
## Form data
You can use the [`form-data`](https://github.com/form-data/form-data) module to create POST request with form data:
```js
const fs = require('fs');
const got = require('got');
const FormData = require('form-data');
const form = new FormData();
form.append('my_file', fs.createReadStream('/foo/bar.jpg'));
got.post('google.com', {
body: form
});
```
## OAuth
You can use the [`oauth-1.0a`](https://github.com/ddo/oauth-1.0a) module to create a signed OAuth request:
```js
const got = require('got');
const OAuth = require('oauth-1.0a');
const oauth = OAuth({
consumer: {
public: process.env.CONSUMER_KEY,
secret: process.env.CONSUMER_SECRET
},
signature_method: 'HMAC-SHA1'
});
const token = {
public: process.env.ACCESS_TOKEN,
secret: process.env.ACCESS_TOKEN_SECRET
};
const url = 'https://api.twitter.com/1.1/statuses/home_timeline.json';
got(url, {
headers: oauth.toHeader(oauth.authorize({url, method: 'GET'}, token)),
json: true
});
```
## Unix Domain Sockets
Requests can also be sent via [unix domain sockets](http://serverfault.com/questions/124517/whats-the-difference-between-unix-socket-and-tcp-ip-socket). Use the following URL scheme: `PROTOCOL://unix:SOCKET:PATH`.
- `PROTOCOL` - `http` or `https` *(optional)*
- `SOCKET` - absolute path to a unix domain socket, e.g. `/var/run/docker.sock`
- `PATH` - request path, e.g. `/v2/keys`
```js
got('http://unix:/var/run/docker.sock:/containers/json');
// or without protocol (http by default)
got('unix:/var/run/docker.sock:/containers/json');
```
## Tip
It's a good idea to set the `'user-agent'` header so the provider can more easily see how their resource is used. By default, it's the URL to this repo.
```js
var got = require('got');
var pkg = require('./package.json');
got('todomvc.com', {
headers: {
'user-agent': 'my-module/' + pkg.version + ' (https://github.com/username/my-module)'
}
}, function () {});
```
## Node.js 0.10.x
It is a known issue with old good Node 0.10.x [`http.Agent`](https://nodejs.org/docs/v0.10.39/api/http.html#http_class_http_agent) and `agent.maxSockets`, which is set to `5`. This can cause low performance and in rare cases deadlocks. To avoid this you can set it manually:
```js
require('http').globalAgent.maxSockets = Infinity;
require('https').globalAgent.maxSockets = Infinity;
```
This should only ever be done if you have Node version 0.10.x and at the top-level app layer.
## Related
- [gh-got](https://github.com/sindresorhus/gh-got) - Convenience wrapper for interacting with the GitHub API
- [travis-got](https://github.com/samverschueren/travis-got) - Convenience wrapper for interacting with the Travis API
## Created by
[![Sindre Sorhus](https://avatars.githubusercontent.com/u/170270?v=3&s=100)](http://sindresorhus.com) | [![Vsevolod Strukchinsky](https://avatars.githubusercontent.com/u/365089?v=3&s=100)](https://github.com/floatdrop)
---|---
[Sindre Sorhus](http://sindresorhus.com) | [Vsevolod Strukchinsky](https://github.com/floatdrop)
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)