From 2ec043d21298b888420001698c7371b6ec29e58c Mon Sep 17 00:00:00 2001
From: waldekmastykarz <waldek@mastykarz.nl>
Date: Tue, 23 Jan 2024 08:27:17 +0100
Subject: [PATCH] Extends RateLimitPlugin to expose default throttling for CORS

---
 dev-proxy-plugins/Behavior/RateLimitingPlugin.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dev-proxy-plugins/Behavior/RateLimitingPlugin.cs b/dev-proxy-plugins/Behavior/RateLimitingPlugin.cs
index 12b20060..a988ddda 100644
--- a/dev-proxy-plugins/Behavior/RateLimitingPlugin.cs
+++ b/dev-proxy-plugins/Behavior/RateLimitingPlugin.cs
@@ -88,6 +88,11 @@ private void UpdateProxyResponse(ProxyHttpEventArgsBase e, HttpStatusCode errorS
             }
 
             headers.Add(new(_configuration.HeaderRetryAfter, ((int)(_resetTime - DateTime.Now).TotalSeconds).ToString()));
+            if (request.Headers.Any(h => h.Name.Equals("Origin", StringComparison.OrdinalIgnoreCase)))
+            {
+                headers.Add(new("Access-Control-Allow-Origin", "*"));
+                headers.Add(new("Access-Control-Expose-Headers", _configuration.HeaderRetryAfter));
+            }
 
             e.Session.GenericResponse(body ?? string.Empty, errorStatus, headers.Select(h => new HttpHeader(h.Name, h.Value)).ToArray());
             return;