fix(node:http) Export `validateHeaderName` and `validateHeaderValue` functions (#22616)

Modify `_http_outgoing.ts` to support the extended signature of
`validateHeaderName()` used since node v19.5.0/v18.14.0 by adding the
`label` parameter. (see:
https://nodejs.org/api/http.html#httpvalidateheadernamename-label)

Making both validation functions accessible as public exports of
`node:http`

Fixes: #22614

2 files changed, 23 insertions, 14 deletions

diff --git a/ext/node/polyfills/_http_outgoing.ts b/ext/node/polyfills/_http_outgoing.ts
index 0cfc070e6..35526a303 100644
--- a/ext/node/polyfills/_http_outgoing.ts
+++ b/ext/node/polyfills/_http_outgoing.ts
@@ -820,21 +820,25 @@ Object.defineProperty(OutgoingMessage.prototype, "_headerNames", {
   ),
 });
 
-export const validateHeaderName = hideStackFrames((name) => {
-  if (typeof name !== "string" || !name || !checkIsHttpToken(name)) {
-    throw new ERR_INVALID_HTTP_TOKEN("Header name", name);
-  }
-});
+export const validateHeaderName = hideStackFrames(
+  (name: string, label?: string): void => {
+    if (typeof name !== "string" || !name || !checkIsHttpToken(name)) {
+      throw new ERR_INVALID_HTTP_TOKEN(label || "Header name", name);
+    }
+  },
+);
 
-export const validateHeaderValue = hideStackFrames((name, value) => {
-  if (value === undefined) {
-    throw new ERR_HTTP_INVALID_HEADER_VALUE(value, name);
-  }
-  if (checkInvalidHeaderChar(value)) {
-    debug('Header "%s" contains invalid characters', name);
-    throw new ERR_INVALID_CHAR("header content", name);
-  }
-});
+export const validateHeaderValue = hideStackFrames(
+  (name: string, value: string): void => {
+    if (value === undefined) {
+      throw new ERR_HTTP_INVALID_HEADER_VALUE(value, name);
+    }
+    if (checkInvalidHeaderChar(value)) {
+      debug('Header "%s" contains invalid characters', name);
+      throw new ERR_INVALID_CHAR("header content", name);
+    }
+  },
+);
 
 export function parseUniqueHeadersOption(headers) {
   if (!Array.isArray(headers)) {
diff --git a/ext/node/polyfills/http.ts b/ext/node/polyfills/http.ts
index bcbf6674f..933a8dbcd 100644
--- a/ext/node/polyfills/http.ts
+++ b/ext/node/polyfills/http.ts
@@ -38,6 +38,7 @@ import {
   OutgoingMessage,
   parseUniqueHeadersOption,
   validateHeaderName,
+  validateHeaderValue,
 } from "ext:deno_node/_http_outgoing.ts";
 import { ok as assert } from "node:assert";
 import { kOutHeaders } from "ext:deno_node/internal/http.ts";
@@ -1824,6 +1825,8 @@ export {
   METHODS,
   OutgoingMessage,
   STATUS_CODES,
+  validateHeaderName,
+  validateHeaderValue,
 };
 export default {
   Agent,
@@ -1840,4 +1843,6 @@ export default {
   ServerResponse,
   request,
   get,
+  validateHeaderName,
+  validateHeaderValue,
 };