preq
v0.5.14
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Yet another promising request wrapper
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preq
Yet another promising request wrapper.
Features
- ES6
Promise
-based, using the excellent bluebird by default - Robustness: retry, timeout and connect timeout support
- Proper error handling: All errors (incl. HTTP responses with code >= 400)
throw exceptions, and can be caught with
Promise.catch()
. This ensures that all errors are handled, and often cleans up the code by clearly separating out error handling. TheHTTPError
instance has all the properties of a normal response.
Installation
npm install preq
Usage
var preq = require('preq');
return preq.get({ // or preq.request({ method: 'get', .. })
uri: 'http://google.com/',
headers: {
'x-foo': 'bar'
},
query: {
q: 'foo'
},
// body for POSTs or PUTs, can be object (serialized to JSON), Buffer or String
})
.then(function(res) {
/**
* {
* status: 200,
* headers: {
* date: 'Sat, 21 Feb 2015 01:47:40 GMT' // , ...
* },
* body: '<!doctype html>...</html>' // or object if json
* }
*/
})
.catch(function(err) {
// Any response with HTTP status >= 400
// err is HTTPError with same properties as response above
});
preq
-specific parameters / methods
preq
passes through most options directly to
request, so see its documentation for
advanced options.
Additionally, it defines or modifies these request options:
method
: Lowercase HTTP verbs. Automatically set by the verb methods (preq.get()
,.post()
etc).uri
: useuri
, noturl
.query
: query string parametersbody
:String
,Buffer
orObject
. If an object is supplied, the serialization depends on thecontent-type
header. Supported:application/json.*
multipart/form-data
application/x-www-form-urlencoded
retries
: Maximum number of retries. Exponential back-off is used between retries.timeout
: Total request timeout.
The connection timeout, maximum time to establish a TCP connection to the host is 5 seconds by default
and can be altered with PREQ_CONNECT_TIMEOUT
environment variable.
Also see the tests for usage examples.