fix: add x-forwarded-host header

src/handlers.py

@@ -136,6 +136,7 @@ class BaseHandler(abc.ABC, http.server.BaseHTTPRequestHandler):
     def send_proxy(self, url: str) -> None:
         headers = dict(self.headers)
         headers["Host"] = urllib.parse.urlparse(url).netloc
+        headers["X-Forwarded-Host"] = self.host
         headers["X-Forwarded-For"] = self.client_address[0]
         headers["X-Real-IP"] = self.client_address[0]
         try: