From 878f074cb6055fa145ceb6d07bf3184bf998b9f6 Mon Sep 17 00:00:00 2001
From: sean-brydon <55134778+sean-brydon@users.noreply.github.com>
Date: Fri, 28 Jul 2023 16:11:44 +0100
Subject: [PATCH] use cloudflare real IP (#10449)

---
 packages/lib/getIP.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/lib/getIP.ts b/packages/lib/getIP.ts
index 31c18803aa..6b26c971ee 100644
--- a/packages/lib/getIP.ts
+++ b/packages/lib/getIP.ts
@@ -10,8 +10,14 @@ export function parseIpFromHeaders(value: string | string[]) {
  * @see https://github.com/vercel/examples/blob/main/edge-functions/ip-blocking/lib/get-ip.ts
  **/
 export default function getIP(request: Request | NextApiRequest) {
-  const xff =
-    request instanceof Request ? request.headers.get("x-forwarded-for") : request.headers["x-forwarded-for"];
+  let xff =
+    request instanceof Request
+      ? request.headers.get("cf-connecting-ip")
+      : request.headers["cf-connecting-ip"];
+
+  if (!xff) {
+    xff = request instanceof Request ? request.headers.get("x-real-ip") : request.headers["x-real-ip"];
+  }
 
   return xff ? parseIpFromHeaders(xff) : "127.0.0.1";
 }