added middelware

app.py

@@ -6,32 +6,28 @@ import json
 import os
 
 from starlette.middleware.httpsredirect import HTTPSRedirectMiddleware
-
-
 from fastapi import FastAPI
 from starlette.middleware.base import BaseHTTPMiddleware
 from starlette.requests import Request
 
-
 class ProxyHeadersMiddleware(BaseHTTPMiddleware):
-	async def dispatch(self, request: Request, call_next):
-		# Fix protocol and host based on headers sent by NGINX
-		proto = request.headers.get("X-Forwarded-Proto", "http")
-		host = request.headers.get("X-Forwarded-Host")
+    async def dispatch(self, request: Request, call_next):
+        proto = request.headers.get("X-Forwarded-Proto", "http")
+        host = request.headers.get("X-Forwarded-Host", request.headers.get("Host"))
 
-		if proto:
-			request.scope["scheme"] = proto
-		if host:
-			request.headers["host"] = host
+        # Update request scheme and host for correct URL generation
+        request.scope["scheme"] = proto
+        if host:
+            request.scope["server"] = (host.split(":")[0], request.scope["server"][1])
 
-		response = await call_next(request)
-		return response
+        response = await call_next(request)
+        return response
 
 app = FastAPI()
 
 # Mount static files
 app.mount("/static", StaticFiles(directory="static"), name="static")
-app.add_middleware(ProxyHeadersMiddleware, allowed_hosts=["*"])
+app.add_middleware(ProxyHeadersMiddleware)
 
 
 # Templates directory