From f38303054d6bbea09d8f92171db1445e510a2e3d Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Mon, 28 Sep 2020 21:16:14 +0300
Subject: Return CF-Connecting-IP header when existing

---
 iss/server.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/iss/server.py b/iss/server.py
index f313827..e1bbfe4 100644
--- a/iss/server.py
+++ b/iss/server.py
@@ -1,6 +1,7 @@
-from fastapi import FastAPI, Request, Response
+from fastapi import FastAPI, Request, Response, Header
 from fastapi.staticfiles import StaticFiles
 from fastapi.templating import Jinja2Templates
+from typing import Optional
 
 from .predictions import Predictions
 
@@ -33,5 +34,5 @@ async def passes(request: Request, lat: float, lng: float):
 
 
 @app.get("/ip")
-async def ip(request: Request):
-    return Response(request.client.host)
+async def ip(request: Request, cf_connecting_ip: Optional[str] = Header(None)):
+    return Response(cf_connecting_ip or request.client.host)
-- 
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