feat(fetch): add Request{Init}.duplex and add WPTs (#1681)

* feat(fetch): add `Request.duplex` and add WPTs

* feat: add remaining applicable tests

lib/fetch/request.js

@@ -472,15 +472,21 @@ class Request {
     // 38. If inputOrInitBody is non-null and inputOrInitBody’s source is
     // null, then:
     if (inputOrInitBody != null && inputOrInitBody.source == null) {
-      // 1. If this’s request’s mode is neither "same-origin" nor "cors",
+      // 1. If initBody is non-null and init["duplex"] does not exist,
+      //    then throw a TypeError.
+      if (initBody != null && init.duplex == null) {
+        throw new TypeError('RequestInit: duplex option is required when sending a body.')
+      }
+
+      // 2. If this’s request’s mode is neither "same-origin" nor "cors",
       // then throw a TypeError.
       if (request.mode !== 'same-origin' && request.mode !== 'cors') {
         throw new TypeError(
           'If request is made from ReadableStream, mode should be "same-origin" or "cors"'
         )
       }
 
-      // 2. Set this’s request’s use-CORS-preflight flag.
+      // 3. Set this’s request’s use-CORS-preflight flag.
       request.useCORSPreflightFlag = true
     }
 
@@ -821,7 +827,17 @@ Object.defineProperties(Request.prototype, {
   headers: kEnumerableProperty,
   redirect: kEnumerableProperty,
   clone: kEnumerableProperty,
-  signal: kEnumerableProperty
+  signal: kEnumerableProperty,
+  duplex: {
+    ...kEnumerableProperty,
+    get () {
+      // The duplex getter steps are to return "half".
+      return 'half'
+    },
+    set () {
+
+    }
+  }
 })
 
 webidl.converters.Request = webidl.interfaceConverter(
@@ -929,6 +945,15 @@ webidl.converters.RequestInit = webidl.dictionaryConverter([
   {
     key: 'window',
     converter: webidl.converters.any
+  },
+  {
+    key: 'duplex',
+    converter: webidl.converters.DOMString,
+    allowedValues: ['half'],
+    // TODO(@KhafraDev): this behavior is incorrect, but
+    // without it, a WPT throws with an uncaught exception,
+    // causing the entire WPT runner to crash.
+    defaultValue: 'half'
   }
 ])
 

test/fetch/abort.js

@@ -4,7 +4,6 @@ const { test } = require('tap')
 const { fetch } = require('../..')
 const { createServer } = require('http')
 const { once } = require('events')
-const { ReadableStream } = require('stream/web')
 const { DOMException } = require('../../lib/fetch/constants')
 
 const { AbortController: NPMAbortController } = require('abort-controller')
@@ -62,53 +61,6 @@ test('parallel fetch with the same AbortController works as expected', async (t)
   t.end()
 })
 
-// https://github.com/web-platform-tests/wpt/blob/fd8aeb1bb2eb33bc43f8a5bbc682b0cff6075dfe/fetch/api/abort/general.any.js#L474-L507
-test('Readable stream synchronously cancels with AbortError if aborted before reading', async (t) => {
-  const server = createServer((req, res) => {
-    res.write('')
-    res.end()
-  }).listen(0)
-
-  t.teardown(server.close.bind(server))
-  await once(server, 'listening')
-
-  const controller = new AbortController()
-  const signal = controller.signal
-  controller.abort()
-
-  let cancelReason
-
-  const body = new ReadableStream({
-    pull (controller) {
-      controller.enqueue(new Uint8Array([42]))
-    },
-    cancel (reason) {
-      cancelReason = reason
-    }
-  })
-
-  const fetchPromise = fetch(`http://localhost:${server.address().port}`, {
-    body,
-    signal,
-    method: 'POST',
-    headers: {
-      'Content-Type': 'text/plain'
-    }
-  })
-
-  t.ok(cancelReason, 'Cancel called sync')
-  t.equal(cancelReason.constructor, DOMException)
-  t.equal(cancelReason.name, 'AbortError')
-
-  await t.rejects(fetchPromise, { name: 'AbortError' })
-
-  const fetchErr = await fetchPromise.catch(e => e)
-
-  t.equal(cancelReason, fetchErr, 'Fetch rejects with same error instance')
-
-  t.end()
-})
-
 test('Allow the usage of custom implementation of AbortController', async (t) => {
   const body = {
     fixes: 1605

test/types/fetch.test-d.ts

@@ -1,7 +1,7 @@
 import { URL } from 'url'
 import { Blob } from 'buffer'
 import { ReadableStream } from 'stream/web'
-import { expectType, expectError } from 'tsd'
+import { expectType, expectError, expectAssignable, expectNotAssignable } from 'tsd'
 import {
   Agent,
   BodyInit,
@@ -10,7 +10,6 @@ import {
   Headers,
   HeadersInit,
   SpecIterableIterator,
-  SpecIterator,
   Request,
   RequestCache,
   RequestCredentials,
@@ -166,3 +165,7 @@ expectType<Promise<FormData>>(response.formData())
 expectType<Promise<unknown>>(response.json())
 expectType<Promise<string>>(response.text())
 expectType<Response>(response.clone())
+
+expectType<Request>(new Request('https://example.com', { body: 'Hello, world', duplex: 'half' }))
+expectAssignable<RequestInit>({ duplex: 'half' })
+expectNotAssignable<RequestInit>({ duplex: 'not valid' })

test/wpt/runner/runner/runner.mjs

@@ -1,6 +1,6 @@
 import { EventEmitter, once } from 'node:events'
 import { readdirSync, readFileSync, statSync } from 'node:fs'
-import { isAbsolute, join, resolve } from 'node:path'
+import { basename, isAbsolute, join, resolve } from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { Worker } from 'node:worker_threads'
 import { parseMeta } from './util.mjs'
@@ -93,7 +93,7 @@ export class WPTRunner extends EventEmitter {
 
       worker.on('message', (message) => {
         if (message.type === 'result') {
-          this.handleIndividualTestCompletion(message)
+          this.handleIndividualTestCompletion(message, basename(test))
         } else if (message.type === 'completion') {
           this.handleTestCompletion(worker)
         }
@@ -114,14 +114,16 @@ export class WPTRunner extends EventEmitter {
   /**
    * Called after a test has succeeded or failed.
    */
-  handleIndividualTestCompletion (message) {
+  handleIndividualTestCompletion (message, fileName) {
+    const { fail } = this.#status[fileName] ?? {}
+
     if (message.type === 'result') {
       this.#stats.completed += 1
 
       if (message.result.status === 1) {
         this.#stats.failed += 1
 
-        if (this.#status.fail.includes(message.result.name)) {
+        if (fail && fail.includes(message.result.name)) {
           this.#stats.expectedFailures += 1
         } else {
           process.exitCode = 1

test/wpt/runner/runner/util.mjs

@@ -38,8 +38,9 @@ export function parseMeta (fileContents) {
     }
 
     switch (groups.type) {
+      case 'title':
       case 'timeout': {
-        meta.timeout = groups.match
+        meta[groups.type] = groups.match
         break
       }
       case 'global': {

test/wpt/runner/runner/worker.mjs

@@ -1,6 +1,7 @@
 import { join } from 'node:path'
 import { runInThisContext } from 'node:vm'
 import { parentPort, workerData } from 'node:worker_threads'
+import { readFileSync } from 'node:fs'
 import {
   setGlobalOrigin,
   Response,
@@ -65,7 +66,8 @@ runInThisContext(`
   globalThis.location = new URL('${url}')
 `)
 
-await import('../resources/testharness.cjs')
+const harness = readFileSync(join(basePath, '../runner/resources/testharness.cjs'), 'utf-8')
+runInThisContext(harness)
 
 // add_*_callback comes from testharness
 // stolen from node's wpt test runner

test/wpt/status/fetch.status.json

@@ -1,7 +1,19 @@
 {
-	"fail": [
-		"Stream errors once aborted. Underlying connection closed.",
-		"Underlying connection is closed when aborting after receiving response - no-cors",
-		"Already aborted signal rejects immediately"
-	]
+	"request-init-stream.any.js": {
+		"fail": [
+			"It is error to omit .duplex when the body is a ReadableStream."
+		]
+	},
+	"general.any.js": {
+		"fail": [
+			"Stream errors once aborted. Underlying connection closed.",
+			"Underlying connection is closed when aborting after receiving response - no-cors",
+			"Already aborted signal rejects immediately"
+		]
+	},
+	"request-disturbed.any.js": {
+		"fail": [
+			"Input request used for creating new request became disturbed even if body is not used"
+		]
+	}
 }

test/wpt/tests/fetch/api/request/forbidden-method.any.js

@@ -0,0 +1,13 @@
+// META: global=window,worker
+
+// https://fetch.spec.whatwg.org/#forbidden-method
+for (const method of [
+    'CONNECT', 'TRACE', 'TRACK',
+    'connect', 'trace', 'track'
+  ]) {
+  test(function() {
+    assert_throws_js(TypeError,
+      function() { new Request('./', {method: method}); }
+    );
+  }, 'Request() with a forbidden method ' + method + ' must throw.');
+}

test/wpt/tests/fetch/api/request/request-bad-port.any.js

@@ -0,0 +1,92 @@
+// META: global=window,worker
+
+// list of bad ports according to
+// https://fetch.spec.whatwg.org/#port-blocking
+var BLOCKED_PORTS_LIST = [
+    1,    // tcpmux
+    7,    // echo
+    9,    // discard
+    11,   // systat
+    13,   // daytime
+    15,   // netstat
+    17,   // qotd
+    19,   // chargen
+    20,   // ftp-data
+    21,   // ftp
+    22,   // ssh
+    23,   // telnet
+    25,   // smtp
+    37,   // time
+    42,   // name
+    43,   // nicname
+    53,   // domain
+    69,   // tftp
+    77,   // priv-rjs
+    79,   // finger
+    87,   // ttylink
+    95,   // supdup
+    101,  // hostriame
+    102,  // iso-tsap
+    103,  // gppitnp
+    104,  // acr-nema
+    109,  // pop2
+    110,  // pop3
+    111,  // sunrpc
+    113,  // auth
+    115,  // sftp
+    117,  // uucp-path
+    119,  // nntp
+    123,  // ntp
+    135,  // loc-srv / epmap
+    137,  // netbios-ns
+    139,  // netbios-ssn
+    143,  // imap2
+    161,  // snmp
+    179,  // bgp
+    389,  // ldap
+    427,  // afp (alternate)
+    465,  // smtp (alternate)
+    512,  // print / exec
+    513,  // login
+    514,  // shell
+    515,  // printer
+    526,  // tempo
+    530,  // courier
+    531,  // chat
+    532,  // netnews
+    540,  // uucp
+    548,  // afp
+    554,  // rtsp
+    556,  // remotefs
+    563,  // nntp+ssl
+    587,  // smtp (outgoing)
+    601,  // syslog-conn
+    636,  // ldap+ssl
+    989,  // ftps-data
+    990,  // ftps
+    993,  // ldap+ssl
+    995,  // pop3+ssl
+    1719, // h323gatestat
+    1720, // h323hostcall
+    1723, // pptp
+    2049, // nfs
+    3659, // apple-sasl
+    4045, // lockd
+    5060, // sip
+    5061, // sips
+    6000, // x11
+    6566, // sane-port
+    6665, // irc (alternate)
+    6666, // irc (alternate)
+    6667, // irc (default)
+    6668, // irc (alternate)
+    6669, // irc (alternate)
+    6697, // irc+tls
+    10080, // amanda
+];
+
+BLOCKED_PORTS_LIST.map(function(a){
+    promise_test(function(t){
+        return promise_rejects_js(t, TypeError, fetch("http://example.com:" + a))
+    }, 'Request on bad port ' + a + ' should throw TypeError.');
+});