[v21.x backport] deps: update undici to 6.6.2

deps/undici/src/README.md

@@ -18,34 +18,23 @@ npm i undici
 ## Benchmarks
 
 The benchmark is a simple `hello world` [example](benchmarks/benchmark.js) using a
-number of unix sockets (connections) with a pipelining depth of 10 running on Node 20.6.0.
-
-### Connections 1
-
-
-| Tests               | Samples |        Result | Tolerance | Difference with slowest |
-|---------------------|---------|---------------|-----------|-------------------------|
-| http - no keepalive |      15 |  5.32 req/sec |  ± 2.61 % |                       - |
-| http - keepalive    |      10 |  5.35 req/sec |  ± 2.47 % |                + 0.44 % |
-| undici - fetch      |      15 | 41.85 req/sec |  ± 2.49 % |              + 686.04 % |
-| undici - pipeline   |      40 | 50.36 req/sec |  ± 2.77 % |              + 845.92 % |
-| undici - stream     |      15 | 60.58 req/sec |  ± 2.75 % |             + 1037.72 % |
-| undici - request    |      10 | 61.19 req/sec |  ± 2.60 % |             + 1049.24 % |
-| undici - dispatch   |      20 | 64.84 req/sec |  ± 2.81 % |             + 1117.81 % |
-
-
-### Connections 50
-
-| Tests               | Samples |           Result | Tolerance | Difference with slowest |
-|---------------------|---------|------------------|-----------|-------------------------|
-| undici - fetch      |      30 |  2107.19 req/sec |  ± 2.69 % |                       - |
-| http - no keepalive |      10 |  2698.90 req/sec |  ± 2.68 % |               + 28.08 % |
-| http - keepalive    |      10 |  4639.49 req/sec |  ± 2.55 % |              + 120.17 % |
-| undici - pipeline   |      40 |  6123.33 req/sec |  ± 2.97 % |              + 190.59 % |
-| undici - stream     |      50 |  9426.51 req/sec |  ± 2.92 % |              + 347.35 % |
-| undici - request    |      10 | 10162.88 req/sec |  ± 2.13 % |              + 382.29 % |
-| undici - dispatch   |      50 | 11191.11 req/sec |  ± 2.98 % |              + 431.09 % |
+50 TCP connections with a pipelining depth of 10 running on Node 20.10.0.
 
+```
+│ Tests               │ Samples │          Result │ Tolerance │ Difference with slowest │
+|─────────────────────|─────────|─────────────────|───────────|─────────────────────────|
+│ got                 │      45 │ 1661.71 req/sec │  ± 2.93 % │                       - │
+│ node-fetch          │      20 │ 2164.81 req/sec │  ± 2.63 % │               + 30.28 % │
+│ undici - fetch      │      35 │ 2274.27 req/sec │  ± 2.70 % │               + 36.86 % │
+│ http - no keepalive │      15 │ 2376.04 req/sec │  ± 2.99 % │               + 42.99 % │
+│ axios               │      25 │ 2612.93 req/sec │  ± 2.89 % │               + 57.24 % │
+│ request             │      40 │ 2712.19 req/sec │  ± 2.92 % │               + 63.22 % │
+│ http - keepalive    │      45 │ 4393.25 req/sec │  ± 2.86 % │              + 164.38 % │
+│ undici - pipeline   │      45 │ 5484.69 req/sec │  ± 2.87 % │              + 230.06 % │
+│ undici - request    │      55 │ 7773.98 req/sec │  ± 2.93 % │              + 367.83 % │
+│ undici - stream     │      70 │ 8425.96 req/sec │  ± 2.91 % │              + 407.07 % │
+│ undici - dispatch   │      50 │ 9488.99 req/sec │  ± 2.85 % │              + 471.04 % │
+```
 
 ## Quick Start
 
@@ -62,9 +51,7 @@ const {
 console.log('response received', statusCode)
 console.log('headers', headers)
 
-for await (const data of body) {
-  console.log('data', data)
-}
+for await (const data of body) { console.log('data', data) }
 
 console.log('trailers', trailers)
 ```
@@ -119,7 +106,7 @@ Returns a promise with the result of the `Dispatcher.request` method.
 
 Calls `options.dispatcher.request(options)`.
 
-See [Dispatcher.request](./docs/api/Dispatcher.md#dispatcherrequestoptions-callback) for more details.
+See [Dispatcher.request](./docs/api/Dispatcher.md#dispatcherrequestoptions-callback) for more details, and [request examples](./examples/README.md) for examples.
 
 ### `undici.stream([url, options, ]factory): Promise`
 
@@ -180,8 +167,6 @@ Implements [fetch](https://fetch.spec.whatwg.org/#fetch-method).
 * https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch
 * https://fetch.spec.whatwg.org/#fetch-method
 
-Only supported on Node 16.8+.
-
 Basic usage example:
 
 ```js

deps/undici/src/docs/api/BalancedPool.md

@@ -50,7 +50,7 @@ Arguments:
 
 ### `BalancedPool.removeUpstream(upstream)`
 
-Removes an upstream that was previously addded.
+Removes an upstream that was previously added.
 
 ### `BalancedPool.close([callback])`
 

deps/undici/src/docs/api/Debug.md

@@ -0,0 +1,62 @@
+# Debug
+
+Undici (and subsenquently `fetch` and `websocket`) exposes a debug statement that can be enabled by setting `NODE_DEBUG` within the environment.
+
+The flags availabile are:
+
+## `undici`
+
+This flag enables debug statements for the core undici library.
+
+```sh
+NODE_DEBUG=undici node script.js
+
+UNDICI 16241: connecting to nodejs.org using https:h1
+UNDICI 16241: connecting to nodejs.org using https:h1
+UNDICI 16241: connected to nodejs.org using https:h1
+UNDICI 16241: sending request to GET https://nodejs.org//
+UNDICI 16241: received response to GET https://nodejs.org// - HTTP 307
+UNDICI 16241: connecting to nodejs.org using https:h1
+UNDICI 16241: trailers received from GET https://nodejs.org//
+UNDICI 16241: connected to nodejs.org using https:h1
+UNDICI 16241: sending request to GET https://nodejs.org//en
+UNDICI 16241: received response to GET https://nodejs.org//en - HTTP 200
+UNDICI 16241: trailers received from GET https://nodejs.org//en
+```
+
+## `fetch`
+
+This flag enables debug statements for the `fetch` API.
+
+> **Note**: statements are pretty similar to the ones in the `undici` flag, but scoped to `fetch`
+
+```sh
+NODE_DEBUG=fetch node script.js
+
+FETCH 16241: connecting to nodejs.org using https:h1
+FETCH 16241: connecting to nodejs.org using https:h1
+FETCH 16241: connected to nodejs.org using https:h1
+FETCH 16241: sending request to GET https://nodejs.org//
+FETCH 16241: received response to GET https://nodejs.org// - HTTP 307
+FETCH 16241: connecting to nodejs.org using https:h1
+FETCH 16241: trailers received from GET https://nodejs.org//
+FETCH 16241: connected to nodejs.org using https:h1
+FETCH 16241: sending request to GET https://nodejs.org//en
+FETCH 16241: received response to GET https://nodejs.org//en - HTTP 200
+FETCH 16241: trailers received from GET https://nodejs.org//en
+```
+
+## `websocket`
+
+This flag enables debug statements for the `Websocket` API.
+
+> **Note**: statements can overlap with `UNDICI` ones if `undici` or `fetch` flag has been enabled as well.
+
+```sh
+NODE_DEBUG=websocket node script.js
+
+WEBSOCKET 18309: connecting to echo.websocket.org using https:h1
+WEBSOCKET 18309: connected to echo.websocket.org using https:h1
+WEBSOCKET 18309: sending request to GET https://echo.websocket.org//
+WEBSOCKET 18309: connection opened <ip_address>
+```

deps/undici/src/docs/api/DiagnosticsChannel.md

@@ -105,7 +105,7 @@ You can not assume that this event is related to any specific request.
 import diagnosticsChannel from 'diagnostics_channel'
 
 diagnosticsChannel.channel('undici:client:beforeConnect').subscribe(({ connectParams, connector }) => {
-  // const { host, hostname, protocol, port, servername } = connectParams
+  // const { host, hostname, protocol, port, servername, version } = connectParams
   // connector is a function that creates the socket
 })
 ```
@@ -118,7 +118,7 @@ This message is published after a connection is established.
 import diagnosticsChannel from 'diagnostics_channel'
 
 diagnosticsChannel.channel('undici:client:connected').subscribe(({ socket, connectParams, connector }) => {
-  // const { host, hostname, protocol, port, servername } = connectParams
+  // const { host, hostname, protocol, port, servername, version } = connectParams
  // connector is a function that creates the socket
 })
 ```
@@ -131,7 +131,7 @@ This message is published if it did not succeed to create new connection
 import diagnosticsChannel from 'diagnostics_channel'
 
 diagnosticsChannel.channel('undici:client:connectError').subscribe(({ error, socket, connectParams, connector }) => {
-  // const { host, hostname, protocol, port, servername } = connectParams
+  // const { host, hostname, protocol, port, servername, version } = connectParams
   // connector is a function that creates the socket
   console.log(`Connect failed with ${error.message}`)
 })

deps/undici/src/docs/api/Dispatcher.md

@@ -209,6 +209,7 @@ Returns: `Boolean` - `false` if dispatcher is busy and further dispatch calls wo
 * **onConnect** `(abort: () => void, context: object) => void` - Invoked before request is dispatched on socket. May be invoked multiple times when a request is retried when the request at the head of the pipeline fails.
 * **onError** `(error: Error) => void` - Invoked when an error has occurred. May not throw.
 * **onUpgrade** `(statusCode: number, headers: Buffer[], socket: Duplex) => void` (optional) - Invoked when request is upgraded. Required if `DispatchOptions.upgrade` is defined or `DispatchOptions.method === 'CONNECT'`.
+* **onResponseStarted** `() => void` (optional) - Invoked when response is received, before headers have been read.
 * **onHeaders** `(statusCode: number, headers: Buffer[], resume: () => void, statusText: string) => boolean` - Invoked when statusCode and headers have been received. May be invoked multiple times due to 1xx informational headers. Not required for `upgrade` requests.
 * **onData** `(chunk: Buffer) => boolean` - Invoked when response payload data is received. Not required for `upgrade` requests.
 * **onComplete** `(trailers: Buffer[]) => void` - Invoked when response payload and trailers have been received and the request has completed. Not required for `upgrade` requests.

deps/undici/src/docs/api/EventSource.md

@@ -0,0 +1,21 @@
+# EventSource
+
+Undici exposes a WHATWG spec-compliant implementation of [EventSource](https://developer.mozilla.org/en-US/docs/Web/API/EventSource)
+for [Server-Sent Events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events).
+
+## Instantiating EventSource
+
+Undici exports a EventSource class. You can instantiate the EventSource as
+follows:
+
+```mjs
+import { EventSource } from 'undici'
+
+const evenSource = new EventSource('http://localhost:3000')
+evenSource.onmessage = (event) => {
+  console.log(event.data)
+}
+```
+
+More information about the EventSource API can be found on
+[MDN](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

deps/undici/src/docs/api/RedirectHandler.md

@@ -0,0 +1,96 @@
+# Class: RedirectHandler
+
+A class that handles redirection logic for HTTP requests.
+
+## `new RedirectHandler(dispatch, maxRedirections, opts, handler, redirectionLimitReached)`
+
+Arguments:
+
+- **dispatch** `function` - The dispatch function to be called after every retry.
+- **maxRedirections** `number` - Maximum number of redirections allowed.
+- **opts** `object` - Options for handling redirection.
+- **handler** `object` - An object containing handlers for different stages of the request lifecycle.
+- **redirectionLimitReached** `boolean` (default: `false`) - A flag that the implementer can provide to enable or disable the feature. If set to `false`, it indicates that the caller doesn't want to use the feature and prefers the old behavior.
+
+Returns: `RedirectHandler`
+
+### Parameters
+
+- **dispatch** `(options: Dispatch.DispatchOptions, handlers: Dispatch.DispatchHandlers) => Promise<Dispatch.DispatchResponse>` (required) - Dispatch function to be called after every redirection.
+- **maxRedirections** `number` (required) - Maximum number of redirections allowed.
+- **opts** `object` (required) - Options for handling redirection.
+- **handler** `object` (required) - Handlers for different stages of the request lifecycle.
+- **redirectionLimitReached** `boolean` (default: `false`) - A flag that the implementer can provide to enable or disable the feature. If set to `false`, it indicates that the caller doesn't want to use the feature and prefers the old behavior.
+
+### Properties
+
+- **location** `string` - The current redirection location.
+- **abort** `function` - The abort function.
+- **opts** `object` - The options for handling redirection.
+- **maxRedirections** `number` - Maximum number of redirections allowed.
+- **handler** `object` - Handlers for different stages of the request lifecycle.
+- **history** `Array` - An array representing the history of URLs during redirection.
+- **redirectionLimitReached** `boolean` - Indicates whether the redirection limit has been reached.
+
+### Methods
+
+#### `onConnect(abort)`
+
+Called when the connection is established.
+
+Parameters:
+
+- **abort** `function` - The abort function.
+
+#### `onUpgrade(statusCode, headers, socket)`
+
+Called when an upgrade is requested.
+
+Parameters:
+
+- **statusCode** `number` - The HTTP status code.
+- **headers** `object` - The headers received in the response.
+- **socket** `object` - The socket object.
+
+#### `onError(error)`
+
+Called when an error occurs.
+
+Parameters:
+
+- **error** `Error` - The error that occurred.
+
+#### `onHeaders(statusCode, headers, resume, statusText)`
+
+Called when headers are received.
+
+Parameters:
+
+- **statusCode** `number` - The HTTP status code.
+- **headers** `object` - The headers received in the response.
+- **resume** `function` - The resume function.
+- **statusText** `string` - The status text.
+
+#### `onData(chunk)`
+
+Called when data is received.
+
+Parameters:
+
+- **chunk** `Buffer` - The data chunk received.
+
+#### `onComplete(trailers)`
+
+Called when the request is complete.
+
+Parameters:
+
+- **trailers** `object` - The trailers received.
+
+#### `onBodySent(chunk)`
+
+Called when the request body is sent.
+
+Parameters:
+
+- **chunk** `Buffer` - The chunk of the request body sent.

deps/undici/src/docs/api/Util.md

@@ -0,0 +1,25 @@
+# Util
+
+Utility API for third-party implementations of the dispatcher API.
+
+## `parseHeaders(headers, [obj])`
+
+Receives a header object and returns the parsed value.
+
+Arguments:
+
+- **headers** `Record<string, string | string[]> | (Buffer | string | (Buffer | string)[])[]` (required) - Header object.
+
+- **obj** `Record<string, string | string[]>` (optional) - Object to specify a proxy object. The parsed value is assigned to this object. But, if **headers** is an object, it is not used.
+
+Returns: `Record<string, string | string[]>` If **headers** is an object, it is **headers**. Otherwise, if **obj** is specified, it is equivalent to **obj**.
+
+## `headerNameToString(value)`
+
+Retrieves a header name and returns its lowercase value.
+
+Arguments:
+
+- **value** `string | Buffer` (required) - Header name.
+
+Returns: `string`

deps/undici/src/docs/best-practices/client-certificate.md

@@ -11,9 +11,9 @@ The server option `rejectUnauthorized: false` allows us to handle any invalid ce
 ### Client Certificate Authentication
 
 ```js
-const { readFileSync } = require('fs')
-const { join } = require('path')
-const { createServer } = require('https')
+const { readFileSync } = require('node:fs')
+const { join } = require('node:path')
+const { createServer } = require('node:https')
 const { Client } = require('undici')
 
 const serverOptions = {

deps/undici/src/index-fetch.js

@@ -4,12 +4,17 @@ const fetchImpl = require('./lib/fetch').fetch
 
 module.exports.fetch = function fetch (resource, init = undefined) {
   return fetchImpl(resource, init).catch((err) => {
-    Error.captureStackTrace(err, this)
+    if (typeof err === 'object') {
+      Error.captureStackTrace(err, this)
+    }
     throw err
   })
 }
 module.exports.FormData = require('./lib/fetch/formdata').FormData
 module.exports.Headers = require('./lib/fetch/headers').Headers
 module.exports.Response = require('./lib/fetch/response').Response
 module.exports.Request = require('./lib/fetch/request').Request
+
 module.exports.WebSocket = require('./lib/websocket/websocket').WebSocket
+
+module.exports.EventSource = require('./lib/eventsource/eventsource').EventSource