From 37d8d2642d4a923021546963f1b35eef64b32fb5 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Thu, 11 Sep 2025 21:19:03 -0700
Subject: [PATCH] copy our Request headers into the HTTP client

---
 src/browser/fetch/fetch.zig | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/browser/fetch/fetch.zig b/src/browser/fetch/fetch.zig
index b2c676df..c59e75d0 100644
--- a/src/browser/fetch/fetch.zig
+++ b/src/browser/fetch/fetch.zig
@@ -105,6 +105,20 @@ pub fn fetch(input: RequestInput, options: ?RequestInit, page: *Page) !Env.Promi
     };
 
     var headers = try Http.Headers.init();
+
+    // Copy our headers into the HTTP headers.
+    var header_iter = req.headers.headers.iterator();
+    while (header_iter.next()) |entry| {
+        // This is fine because curl/headers copies it internally.
+        const combined = try std.fmt.allocPrintSentinel(
+            page.call_arena,
+            "{s}: {s}",
+            .{ entry.key_ptr.*, entry.value_ptr.* },
+            0,
+        );
+        try headers.add(combined.ptr);
+    }
+
     try page.requestCookie(.{}).headersForRequest(arena, req.url, &headers);
 
     const fetch_ctx = try arena.create(FetchContext);