Simplified HTTP requests
A nicer interface to the built-in http
module.
Created because request
is bloated (several megabytes!).
Highlights
Install
$ npm install --save got
Usage
const fs = require('fs');
const got = require('got');
got('todomvc.com')
.then(response => {
console.log(response.body);
})
.catch(error => {
console.log(error.response.body);
});
got.stream('todomvc.com').pipe(fs.createWriteStream('index.html'));
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])
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.
url
Type: string
Object
The URL to request as simple string, a http.request
options, or a WHATWG URL
.
Properties from options
will override properties in the parsed url
.
options
Type: Object
Any of the http.request
options.
body
Type: string
Buffer
stream.Readable
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.
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.
form
Type: boolean
Default: false
This is mutually exclusive with stream mode.
If set to true
and Content-Type
header is not set, it will be set to application/x-www-form-urlencoded
.
body
must be a plain object or array and will be stringified.
json
Type: boolean
Default: false
This is mutually exclusive with stream mode.
If set to true
and Content-Type
header is not set, it will be set to application/json
.
Parse response body with JSON.parse
and set accept
header to application/json
. If used in conjunction with the form
option, the body
will the stringified as querystring and the response parsed as JSON.
body
must be a plain object or array and will be stringified.
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
Object
Milliseconds to wait for the server to end the response before aborting request with ETIMEDOUT
error.
This also accepts an object with separate connect
, socket
, and request
fields for connection, socket, and entire request timeouts.
retries
Type: number
Function
Default: 2
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
module).
followRedirect
Type: boolean
Default: true
Defines if redirect responses should be followed automatically.
Note that if a 303
is sent by the server in response to any request type (POST
, DELETE
, etc.), got will automatically
request the resource pointed to in the location header via GET
. This is in accordance with the spec.
decompress
Type: boolean
Default: true
Decompress the response automatically.
If this is disabled, a compressed response is returned as a Buffer
. This may be useful if you want to handle decompression yourself or stream the raw compressed data.
useElectronNet
Type: boolean
Default: true
When used in Electron, Got will automatically use electron.net
instead of the Node.js http
module. It should be fully compatible, but you can turn it off here if you encounter a problem. Please open an issue if you do!
Streams
got.stream(url, [options])
stream
method will return Duplex stream with additional events:
.on('request', request)
request
event to get the request object of the request.
Tip: You can use request
event to abort request:
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])
got.post(url, [options])
got.put(url, [options])
got.patch(url, [options])
got.head(url, [options])
got.delete(url, [options])
Sets options.method
to the method name and makes a request.
Errors
Each error contains (if available) statusCode
, statusMessage
, host
, hostname
, method
, path
, protocol
and url
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, server response code is 2xx, and JSON.parse
fails.
got.HTTPError
When server response code is not 2xx. Includes statusCode
, statusMessage
, and redirectUrls
properties.
got.MaxRedirectsError
When server redirects you more than 10 times. Includes a redirectUrls
property, which is an array of the URLs Got was redirected to before giving up.
got.UnsupportedProtocolError
When given an unsupported protocol.
Aborting the request
The promise returned by Got has a .cancel()
function which, when called, aborts the request.
Proxies
You can use the tunnel
module with the agent
option to work with proxies:
const got = require('got');
const tunnel = require('tunnel');
got('todomvc.com', {
agent: tunnel.httpOverHttp({
proxy: {
host: 'localhost'
}
})
});
Cookies
You can use the cookie
module to include cookies in a request:
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
module to create POST request with form data:
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
module to create a signed OAuth request:
const got = require('got');
const crypto = require('crypto');
const OAuth = require('oauth-1.0a');
const oauth = OAuth({
consumer: {
key: process.env.CONSUMER_KEY,
secret: process.env.CONSUMER_SECRET
},
signature_method: 'HMAC-SHA1',
hash_function: (baseString, key) => crypto.createHmac('sha1', key).update(baseString).digest('base64')
});
const token = {
key: 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. 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
got('http://unix:/var/run/docker.sock:/containers/json');
got('unix:/var/run/docker.sock:/containers/json');
AWS
Requests to AWS services need to have their headers signed. This can be accomplished by using the aws4
package. This is an example for querying an "Elasticsearch Service" host with a signed request.
const url = require('url');
const AWS = require('aws-sdk');
const aws4 = require('aws4');
const got = require('got');
const config = require('./config');
const awsConfig = new AWS.Config({ region: config.region });
function request(uri, options) {
const awsOpts = {
region: awsConfig.region,
headers: {
accept: 'application/json',
'content-type': 'application/json'
},
method: 'GET',
json: true
};
const opts = Object.assign(url.parse(uri), awsOpts, options);
aws4.sign(opts, awsConfig.credentials);
return got(opts);
}
request(`https://${config.host}/production/users/1`);
request(`https://${config.host}/production/`, {
});
Tips
User Agent
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.
const got = require('got');
const pkg = require('./package.json');
got('todomvc.com', {
headers: {
'user-agent': `my-module/${pkg.version} (https://github.com/username/my-module)`
}
});
304 Responses
Bear in mind, if you send an if-modified-since
header and receive a 304 Not Modified
response, the body will be empty. It's your responsibility to cache and retrieve the body contents.
Related
- gh-got - Convenience wrapper for interacting with the GitHub API
- travis-got - Convenience wrapper for interacting with the Travis API
Created by
License
MIT