url: expose urlToHttpOptions utility

PR-URL: #35960
Fixes: #34349
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

doc/api/url.md

@@ -1029,6 +1029,50 @@ new URL('/some/path%.c', 'file:'); // Incorrect: file:///some/path%.c
 pathToFileURL('/some/path%.c');    // Correct:   file:///some/path%25.c (POSIX)
 ```
 
+### `url.urlToHttpOptions(url)`
+<!-- YAML
+added: REPLACEME
+-->
+
+* `url` {URL} The [WHATWG URL][] object to convert to an options object.
+* Returns: {Object} Options object
+  * `protocol` {string} Protocol to use.
+  * `hostname` {string} A domain name or IP address of the server to issue the
+    request to.
+  * `hash` {string} The fragment portion of the URL.
+  * `search` {string} The serialized query portion of the URL.
+  * `pathname` {string} The path portion of the URL.
+  * `path` {string} Request path. Should include query string if any.
+    E.G. `'/index.html?page=12'`. An exception is thrown when the request path
+    contains illegal characters. Currently, only spaces are rejected but that
+    may change in the future.
+  * `href` {string} The serialized URL.
+  * `port` {number} Port of remote server.
+  * `auth` {string} Basic authentication i.e. `'user:password'` to compute an
+    Authorization header.
+
+This utility function converts a URL object into an ordinary options object as
+expected by the [`http.request()`][] and [`https.request()`][] APIs.
+
+```js
+const { urlToHttpOptions } = require('url');
+const myURL = new URL('https://a:b@測試?abc#foo');
+
+console.log(urlToHttpOptions(myUrl));
+/**
+{
+  protocol: 'https:',
+  hostname: 'xn--g6w251d',
+  hash: '#foo',
+  search: '?abc',
+  pathname: '/',
+  path: '/?abc',
+  href: 'https://a:b@xn--g6w251d/?abc#foo',
+  auth: 'a:b'
+}
+*/
+```
+
 ## Legacy URL API
 <!-- YAML
 deprecated: v11.0.0
@@ -1388,6 +1432,8 @@ console.log(myURL.origin);
 [`TypeError`]: errors.md#errors_class_typeerror
 [`URLSearchParams`]: #url_class_urlsearchparams
 [`array.toString()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toString
+[`http.request()`]: http.md#http_http_request_options_callback
+[`https.request()`]: https.md#https_https_request_options_callback
 [`new URL()`]: #url_new_url_input_base
 [`querystring`]: querystring.md
 [`require('url').format()`]: #url_url_format_url_options

lib/_http_client.js

@@ -58,7 +58,7 @@ const { OutgoingMessage } = require('_http_outgoing');
 const Agent = require('_http_agent');
 const { Buffer } = require('buffer');
 const { defaultTriggerAsyncIdScope } = require('internal/async_hooks');
-const { URL, urlToOptions, searchParamsSymbol } = require('internal/url');
+const { URL, urlToHttpOptions, searchParamsSymbol } = require('internal/url');
 const { kOutHeaders, kNeedDrain } = require('internal/http');
 const { connResetException, codes } = require('internal/errors');
 const {
@@ -105,7 +105,7 @@ function ClientRequest(input, options, cb) {
   if (typeof input === 'string') {
     const urlStr = input;
     try {
-      input = urlToOptions(new URL(urlStr));
+      input = urlToHttpOptions(new URL(urlStr));
     } catch (err) {
       input = url.parse(urlStr);
       if (!input.hostname) {
@@ -122,7 +122,7 @@ function ClientRequest(input, options, cb) {
   } else if (input && input[searchParamsSymbol] &&
              input[searchParamsSymbol][searchParamsSymbol]) {
     // url.URL instance
-    input = urlToOptions(input);
+    input = urlToHttpOptions(input);
   } else {
     cb = options;
     options = input;

lib/https.js

@@ -48,7 +48,7 @@ const { ClientRequest } = require('_http_client');
 let debug = require('internal/util/debuglog').debuglog('https', (fn) => {
   debug = fn;
 });
-const { URL, urlToOptions, searchParamsSymbol } = require('internal/url');
+const { URL, urlToHttpOptions, searchParamsSymbol } = require('internal/url');
 const { IncomingMessage, ServerResponse } = require('http');
 const { kIncomingMessage } = require('_http_common');
 
@@ -303,7 +303,7 @@ function request(...args) {
   if (typeof args[0] === 'string') {
     const urlStr = ArrayPrototypeShift(args);
     try {
-      options = urlToOptions(new URL(urlStr));
+      options = urlToHttpOptions(new URL(urlStr));
     } catch (err) {
       options = url.parse(urlStr);
       if (!options.hostname) {
@@ -320,7 +320,7 @@ function request(...args) {
   } else if (args[0] && args[0][searchParamsSymbol] &&
              args[0][searchParamsSymbol][searchParamsSymbol]) {
     // url.URL instance
-    options = urlToOptions(ArrayPrototypeShift(args));
+    options = urlToHttpOptions(ArrayPrototypeShift(args));
   }
 
   if (args[0] && typeof args[0] !== 'function') {

lib/internal/url.js

@@ -1295,7 +1295,7 @@ function domainToUnicode(domain) {
 // Utility function that converts a URL object into an ordinary
 // options object as expected by the http.request and https.request
 // APIs.
-function urlToOptions(url) {
+function urlToHttpOptions(url) {
   const options = {
     protocol: url.protocol,
     hostname: typeof url.hostname === 'string' &&
@@ -1494,7 +1494,7 @@ module.exports = {
   URLSearchParams,
   domainToASCII,
   domainToUnicode,
-  urlToOptions,
+  urlToHttpOptions,
   formatSymbol: kFormat,
   searchParamsSymbol: searchParams,
   encodeStr

lib/url.js

@@ -47,9 +47,10 @@ const {
   URLSearchParams,
   domainToASCII,
   domainToUnicode,
+  fileURLToPath,
   formatSymbol,
   pathToFileURL,
-  fileURLToPath
+  urlToHttpOptions,
 } = require('internal/url');
 
 // Original url.parse() API
@@ -987,5 +988,6 @@ module.exports = {
 
   // Utilities
   pathToFileURL,
-  fileURLToPath
+  fileURLToPath,
+  urlToHttpOptions,
 };

test/parallel/test-url-urltooptions.js

@@ -0,0 +1,37 @@
+'use strict';
+require('../common');
+const assert = require('assert');
+const { urlToHttpOptions } = require('url');
+
+// Test urlToHttpOptions
+const urlObj = new URL('http://user:pass@foo.bar.com:21/aaa/zzz?l=24#test');
+const opts = urlToHttpOptions(urlObj);
+assert.strictEqual(opts instanceof URL, false);
+assert.strictEqual(opts.protocol, 'http:');
+assert.strictEqual(opts.auth, 'user:pass');
+assert.strictEqual(opts.hostname, 'foo.bar.com');
+assert.strictEqual(opts.port, 21);
+assert.strictEqual(opts.path, '/aaa/zzz?l=24');
+assert.strictEqual(opts.pathname, '/aaa/zzz');
+assert.strictEqual(opts.search, '?l=24');
+assert.strictEqual(opts.hash, '#test');
+
+const { hostname } = urlToHttpOptions(new URL('http://[::1]:21'));
+assert.strictEqual(hostname, '::1');
+
+// If a WHATWG URL object is copied, it is possible that the resulting copy
+// contains the Symbols that Node uses for brand checking, but not the data
+// properties, which are getters. Verify that urlToHttpOptions() can handle
+// such a case.
+const copiedUrlObj = { ...urlObj };
+const copiedOpts = urlToHttpOptions(copiedUrlObj);
+assert.strictEqual(copiedOpts instanceof URL, false);
+assert.strictEqual(copiedOpts.protocol, undefined);
+assert.strictEqual(copiedOpts.auth, undefined);
+assert.strictEqual(copiedOpts.hostname, undefined);
+assert.strictEqual(copiedOpts.port, NaN);
+assert.strictEqual(copiedOpts.path, '');
+assert.strictEqual(copiedOpts.pathname, undefined);
+assert.strictEqual(copiedOpts.search, undefined);
+assert.strictEqual(copiedOpts.hash, undefined);
+assert.strictEqual(copiedOpts.href, undefined);

test/parallel/test-whatwg-url-custom-properties.js

@@ -6,7 +6,6 @@
 require('../common');
 const URL = require('url').URL;
 const assert = require('assert');
-const urlToOptions = require('internal/url').urlToOptions;
 
 const url = new URL('http://user:pass@foo.bar.com:21/aaa/zzz?l=24#test');
 const oldParams = url.searchParams;  // For test of [SameObject]
@@ -131,41 +130,6 @@ assert.strictEqual(url.toString(),
 assert.strictEqual((delete url.searchParams), true);
 assert.strictEqual(url.searchParams, oldParams);
 
-// Test urlToOptions
-{
-  const urlObj = new URL('http://user:pass@foo.bar.com:21/aaa/zzz?l=24#test');
-  const opts = urlToOptions(urlObj);
-  assert.strictEqual(opts instanceof URL, false);
-  assert.strictEqual(opts.protocol, 'http:');
-  assert.strictEqual(opts.auth, 'user:pass');
-  assert.strictEqual(opts.hostname, 'foo.bar.com');
-  assert.strictEqual(opts.port, 21);
-  assert.strictEqual(opts.path, '/aaa/zzz?l=24');
-  assert.strictEqual(opts.pathname, '/aaa/zzz');
-  assert.strictEqual(opts.search, '?l=24');
-  assert.strictEqual(opts.hash, '#test');
-
-  const { hostname } = urlToOptions(new URL('http://[::1]:21'));
-  assert.strictEqual(hostname, '::1');
-
-  // If a WHATWG URL object is copied, it is possible that the resulting copy
-  // contains the Symbols that Node uses for brand checking, but not the data
-  // properties, which are getters. Verify that urlToOptions() can handle such
-  // a case.
-  const copiedUrlObj = { ...urlObj };
-  const copiedOpts = urlToOptions(copiedUrlObj);
-  assert.strictEqual(copiedOpts instanceof URL, false);
-  assert.strictEqual(copiedOpts.protocol, undefined);
-  assert.strictEqual(copiedOpts.auth, undefined);
-  assert.strictEqual(copiedOpts.hostname, undefined);
-  assert.strictEqual(copiedOpts.port, NaN);
-  assert.strictEqual(copiedOpts.path, '');
-  assert.strictEqual(copiedOpts.pathname, undefined);
-  assert.strictEqual(copiedOpts.search, undefined);
-  assert.strictEqual(copiedOpts.hash, undefined);
-  assert.strictEqual(copiedOpts.href, undefined);
-}
-
 // Test special origins
 [
   { expected: 'https://whatwg.org',