@devtea2027/accusantium-voluptas-rem-iste
Advanced tools
An HTTP/1.1 client, written from scratch for Node.js.
Undici means eleven in Italian. 1.1 -> 11 -> Eleven -> Undici. It is also a Stranger Things reference.
Have a question about using Undici? Open a Q&A Discussion or join our official OpenJS Slack channel.
Looking to contribute? Start by reading the contributing guide
npm i @devtea2027/accusantium-voluptas-rem-iste
The benchmark is a simple getting data example using a 50 TCP connections with a pipelining depth of 10 running on Node 20.10.0.
| Tests | Samples | Result | Tolerance | Difference with slowest |
|---|---|---|---|---|
| @devtea2027/accusantium-voluptas-rem-iste - fetch | 30 | 3704.43 req/sec | ± 2.95 % | - |
| http - no keepalive | 20 | 4275.30 req/sec | ± 2.60 % | + 15.41 % |
| node-fetch | 10 | 4759.42 req/sec | ± 0.87 % | + 28.48 % |
| request | 40 | 4803.37 req/sec | ± 2.77 % | + 29.67 % |
| axios | 45 | 4951.97 req/sec | ± 2.88 % | + 33.68 % |
| got | 10 | 5969.67 req/sec | ± 2.64 % | + 61.15 % |
| superagent | 10 | 9471.48 req/sec | ± 1.50 % | + 155.68 % |
| http - keepalive | 25 | 10327.49 req/sec | ± 2.95 % | + 178.79 % |
| @devtea2027/accusantium-voluptas-rem-iste - pipeline | 10 | 15053.41 req/sec | ± 1.63 % | + 306.36 % |
| @devtea2027/accusantium-voluptas-rem-iste - request | 10 | 19264.24 req/sec | ± 1.74 % | + 420.03 % |
| @devtea2027/accusantium-voluptas-rem-iste - stream | 15 | 20317.29 req/sec | ± 2.13 % | + 448.46 % |
| @devtea2027/accusantium-voluptas-rem-iste - dispatch | 10 | 24883.28 req/sec | ± 1.54 % | + 571.72 % |
The benchmark is a simple sending data example using a 50 TCP connections with a pipelining depth of 10 running on Node 20.10.0.
| Tests | Samples | Result | Tolerance | Difference with slowest |
|---|---|---|---|---|
| @devtea2027/accusantium-voluptas-rem-iste - fetch | 20 | 1968.42 req/sec | ± 2.63 % | - |
| http - no keepalive | 25 | 2330.30 req/sec | ± 2.99 % | + 18.38 % |
| node-fetch | 20 | 2485.36 req/sec | ± 2.70 % | + 26.26 % |
| got | 15 | 2787.68 req/sec | ± 2.56 % | + 41.62 % |
| request | 30 | 2805.10 req/sec | ± 2.59 % | + 42.50 % |
| axios | 10 | 3040.45 req/sec | ± 1.72 % | + 54.46 % |
| superagent | 20 | 3358.29 req/sec | ± 2.51 % | + 70.61 % |
| http - keepalive | 20 | 3477.94 req/sec | ± 2.51 % | + 76.69 % |
| @devtea2027/accusantium-voluptas-rem-iste - pipeline | 25 | 3812.61 req/sec | ± 2.80 % | + 93.69 % |
| @devtea2027/accusantium-voluptas-rem-iste - request | 10 | 6067.00 req/sec | ± 0.94 % | + 208.22 % |
| @devtea2027/accusantium-voluptas-rem-iste - stream | 10 | 6391.61 req/sec | ± 1.98 % | + 224.71 % |
| @devtea2027/accusantium-voluptas-rem-iste - dispatch | 10 | 6397.00 req/sec | ± 1.48 % | + 224.98 % |
import { request } from '@devtea2027/accusantium-voluptas-rem-iste'
const {
statusCode,
headers,
trailers,
body
} = await request('http://localhost:3000/foo')
console.log('response received', statusCode)
console.log('headers', headers)
for await (const data of body) { console.log('data', data) }
console.log('trailers', trailers)
The body mixins are the most common way to format the request/response body. Mixins include:
[!NOTE] The body returned from
@devtea2027/accusantium-voluptas-rem-iste.requestdoes not implement.formData().
Example usage:
import { request } from '@devtea2027/accusantium-voluptas-rem-iste'
const {
statusCode,
headers,
trailers,
body
} = await request('http://localhost:3000/foo')
console.log('response received', statusCode)
console.log('headers', headers)
console.log('data', await body.json())
console.log('trailers', trailers)
Note: Once a mixin has been called then the body cannot be reused, thus calling additional mixins on .body, e.g. .body.json(); .body.text() will result in an error TypeError: unusable being thrown and returned through the Promise rejection.
Should you need to access the body in plain-text after using a mixin, the best practice is to use the .text() mixin first and then manually parse the text to the desired format.
For more information about their behavior, please reference the body mixin from the Fetch Standard.
This section documents our most commonly used API methods. Additional APIs are documented in their own files within the docs folder and are accessible via the navigation list on the left side of the docs site.
@devtea2027/accusantium-voluptas-rem-iste.request([url, options]): PromiseArguments:
string | URL | UrlObjectRequestOptions
Dispatcher - Default: getGlobalDispatcherString - Default: PUT if options.body, otherwise GETInteger - Default: 0Returns a promise with the result of the Dispatcher.request method.
Calls options.dispatcher.request(options).
See Dispatcher.request for more details, and request examples for examples.
@devtea2027/accusantium-voluptas-rem-iste.stream([url, options, ]factory): PromiseArguments:
string | URL | UrlObjectStreamOptions
Dispatcher - Default: getGlobalDispatcherString - Default: PUT if options.body, otherwise GETInteger - Default: 0Dispatcher.stream.factoryReturns a promise with the result of the Dispatcher.stream method.
Calls options.dispatcher.stream(options, factory).
See Dispatcher.stream for more details.
@devtea2027/accusantium-voluptas-rem-iste.pipeline([url, options, ]handler): DuplexArguments:
string | URL | UrlObjectPipelineOptions
Dispatcher - Default: getGlobalDispatcherString - Default: PUT if options.body, otherwise GETInteger - Default: 0Dispatcher.pipeline.handlerReturns: stream.Duplex
Calls options.dispatch.pipeline(options, handler).
See Dispatcher.pipeline for more details.
@devtea2027/accusantium-voluptas-rem-iste.connect([url, options]): PromiseStarts two-way communications with the requested resource using HTTP CONNECT.
Arguments:
string | URL | UrlObjectConnectOptions
Dispatcher - Default: getGlobalDispatcherInteger - Default: 0(err: Error | null, data: ConnectData | null) => void (optional)Returns a promise with the result of the Dispatcher.connect method.
Calls options.dispatch.connect(options).
See Dispatcher.connect for more details.
@devtea2027/accusantium-voluptas-rem-iste.fetch(input[, init]): PromiseImplements fetch.
Basic usage example:
import { fetch } from '@devtea2027/accusantium-voluptas-rem-iste'
const res = await fetch('https://example.com')
const json = await res.json()
console.log(json)
You can pass an optional dispatcher to fetch as:
import { fetch, Agent } from '@devtea2027/accusantium-voluptas-rem-iste'
const res = await fetch('https://example.com', {
// Mocks are also supported
dispatcher: new Agent({
keepAliveTimeout: 10,
keepAliveMaxTimeout: 10
})
})
const json = await res.json()
console.log(json)
request.bodyA body can be of the following types:
In this implementation of fetch, request.body now accepts Async Iterables. It is not present in the Fetch Standard.
import { fetch } from '@devtea2027/accusantium-voluptas-rem-iste'
const data = {
async *[Symbol.asyncIterator]() {
yield 'hello'
yield 'world'
},
}
await fetch('https://example.com', { body: data, method: 'POST', duplex: 'half' })
FormData besides text data and buffers can also utilize streams via Blob objects:
import { openAsBlob } from 'node:fs'
const file = await openAsBlob('./big.csv')
const body = new FormData()
body.set('file', file, 'big.csv')
await fetch('http://example.com', { method: 'POST', body })
request.duplexIn this implementation of fetch, request.duplex must be set if request.body is ReadableStream or Async Iterables, however, fetch requests are currently always full duplex. For more detail refer to the Fetch Standard..
response.bodyNodejs has two kinds of streams: web streams, which follow the API of the WHATWG web standard found in browsers, and an older Node-specific streams API. response.body returns a readable web stream. If you would prefer to work with a Node stream you can convert a web stream using .fromWeb().
import { fetch } from '@devtea2027/accusantium-voluptas-rem-iste'
import { Readable } from 'node:stream'
const response = await fetch('https://example.com')
const readableWebStream = response.body
const readableNodeStream = Readable.fromWeb(readableWebStream)
This section documents parts of the Fetch Standard that Undici does not support or does not fully implement.
The Fetch Standard allows users to skip consuming the response body by relying on garbage collection to release connection resources. Undici does not do the same. Therefore, it is important to always either consume or cancel the response body.
Garbage collection in Node is less aggressive and deterministic (due to the lack of clear idle periods that browsers have through the rendering refresh rate) which means that leaving the release of connection resources to the garbage collector can lead to excessive connection usage, reduced performance (due to less connection re-use), and even stalls or deadlocks when running out of connections.
// Do
const headers = await fetch(url)
.then(async res => {
for await (const chunk of res.body) {
// force consumption of body
}
return res.headers
})
// Do not
const headers = await fetch(url)
.then(res => res.headers)
However, if you want to get only headers, it might be better to use HEAD request method. Usage of this method will obviate the need for consumption or cancelling of the response body. See MDN - HTTP - HTTP request methods - HEAD for more details.
const headers = await fetch(url, { method: 'HEAD' })
.then(res => res.headers)
The Fetch Standard requires implementations to exclude certain headers from requests and responses. In browser environments, some headers are forbidden so the user agent remains in full control over them. In Undici, these constraints are removed to give more control to the user.
@devtea2027/accusantium-voluptas-rem-iste.upgrade([url, options]): PromiseUpgrade to a different protocol. See MDN - HTTP - Protocol upgrade mechanism for more details.
Arguments:
string | URL | UrlObjectUpgradeOptions
Dispatcher - Default: getGlobalDispatcherInteger - Default: 0(error: Error | null, data: UpgradeData) => void (optional)Returns a promise with the result of the Dispatcher.upgrade method.
Calls options.dispatcher.upgrade(options).
See Dispatcher.upgrade for more details.
@devtea2027/accusantium-voluptas-rem-iste.setGlobalDispatcher(dispatcher)DispatcherSets the global dispatcher used by Common API Methods.
@devtea2027/accusantium-voluptas-rem-iste.getGlobalDispatcher()Gets the global dispatcher used by Common API Methods.
Returns: Dispatcher
@devtea2027/accusantium-voluptas-rem-iste.setGlobalOrigin(origin)string | URL | undefinedSets the global origin used in fetch.
If undefined is passed, the global origin will be reset. This will cause Response.redirect, new Request(), and fetch to throw an error when a relative path is passed.
setGlobalOrigin('http://localhost:3000')
const response = await fetch('/api/ping')
console.log(response.url) // http://localhost:3000/api/ping
@devtea2027/accusantium-voluptas-rem-iste.getGlobalOrigin()Gets the global origin used in fetch.
Returns: URL
UrlObjectstring | number (optional)string (optional)string (optional)string (optional)string (optional)string (optional)string (optional)This section documents parts of the HTTP/1.1 specification that Undici does not support or does not fully implement.
Undici does not support the Expect request header field. The request
body is always immediately sent and the 100 Continue response will be
ignored.
Refs: https://tools.ietf.org/html/rfc7231#section-5.1.1
Undici will only use pipelining if configured with a pipelining factor
greater than 1.
Undici always assumes that connections are persistent and will immediately pipeline requests, without checking whether the connection is persistent. Hence, automatic fallback to HTTP/1.0 or HTTP/1.1 without pipelining is not supported.
Undici will immediately pipeline when retrying requests after a failed connection. However, Undici will not retry the first remaining requests in the prior pipeline and instead error the corresponding callback/promise/stream.
Undici will abort all running requests in the pipeline when any of them are aborted.
Since it is not possible to manually follow an HTTP redirect on the server-side,
Undici returns the actual response instead of an opaqueredirect filtered one
when invoked with a manual redirect. This aligns fetch() with the other
implementations in Deno and Cloudflare Workers.
Refs: https://fetch.spec.whatwg.org/#atomic-http-redirect-handling
If you experience problem when connecting to a remote server that is resolved by your DNS servers to a IPv6 (AAAA record)
first, there are chances that your local router or ISP might have problem connecting to IPv6 networks. In that case
@devtea2027/accusantium-voluptas-rem-iste will throw an error with code UND_ERR_CONNECT_TIMEOUT.
If the target server resolves to both a IPv6 and IPv4 (A records) address and you are using a compatible Node version
(18.3.0 and above), you can fix the problem by providing the autoSelectFamily option (support by both @devtea2027/accusantium-voluptas-rem-iste.request
and @devtea2027/accusantium-voluptas-rem-iste.Agent) which will enable the family autoselection algorithm when establishing the connection.
MIT
FAQs
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