Add User-Agent header to CORS preflight requests

Fixes #1659. This mirrors the behavior of other browsers, and fixes broken XHR requests to APIs that require a User-Agent header for all requests, such as api.github.com.
jsdom · Apr 30, 2018 · 1e252e0 · 1e252e0
1 parent 9b25ba5
commit 1e252e0
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/jsdom/living/xhr-utils.js b/lib/jsdom/living/xhr-utils.js
@@ -349,6 +349,8 @@ function createClient(xhr) {
       preflightRequestHeaders["Access-Control-Request-Headers"] = nonSimpleHeaders.join(", ");
     }
 
+    preflightRequestHeaders["User-Agent"] = requestHeaders["User-Agent"];
+
     flag.preflight = true;
 
     const preflightOptions = {