use aiohttp

ipserv.py

@@ -2,16 +2,30 @@ import requests
 import json
 import logging
 import time
+import aiohttp
 from fastapi import FastAPI, Header, Request, Query, HTTPException
 from fastapi.responses import JSONResponse
+from contextlib import asynccontextmanager
+
+logging.basicConfig(level=logging.INFO)
+
+
+@asynccontextmanager()
+async def lifespan(_app: FastAPI):
+    async with aiohttp.ClientSession(
+        "https://ip.shronk.tech",
+        connector=aiohttp.TCPConnector(limit=2048)
+    ) as client:
+        _app.state.session = client
+        yield
+
 
 app = FastAPI()
-logging.basicConfig(level=logging.INFO)
-cache = {}
+app.state.cache = {}
 
 
 @app.get("/")
-def ip(
+async def ip(
     request: Request,
     X_Forwarded_For: str = Header(None),
     User_Agent: str = Header("Mozilla/5.0"),
@@ -26,8 +40,8 @@ def ip(
     else:
         ip = request.client.host
 
-    if ip in cache:
-        data, timestamp = cache[ip]
+    if ip in app.state.cache:
+        data, timestamp = app.state.cache[ip]
         if time.time() - timestamp < 3600:
             logging.info("cache hit for %s", ip)
             return JSONResponse(data)
@@ -35,27 +49,12 @@ def ip(
 
     logging.info("looking up IP info for %s", ip)
     try:
-        response = requests.get(
-            "https://ip.shronk.tech/lookup?ip=" + ip,
-            headers={
-                "User-Agent": User_Agent,
-                "Accept": Accept,
-                "Accept-Language": Accept_Language,
-                "Dnt": "1",
-                "Sec-Fetch-Dest": "document",
-                "Sec-Fetch-Mode": "navigate",
-                "Sec-Fetch-Site": "none",
-                "Sec-Fetch-User": "?1",
-                "Sec-Gpc": "1",
-                "Upgrade-Insecure-Requests": "1"
-            }
-        )
-        response.raise_for_status()
+        async with app.state.session.get(f"/lookup?ip={ip}") as response:
+            response.raise_for_status()
+            data = await response.json()
     except Exception as e:
         logging.error("Failed to get data for %s: %s", ip, e, exc_info=True)
         raise HTTPException(500, "Failed to get upstream data.")
-    try:
-        data = response.json()
     except json.JSONDecodeError as e:
         logging.error("Failed to parse data for %s: %s", ip, e, exc_info=True)
         raise HTTPException(500, "Failed to parse upstream response.")
@@ -65,5 +64,5 @@ def ip(
     data.pop("source", None)
     data.pop("brexitRequired", None)
     if response.status_code == 200:
-        cache[ip] = [data, time.time()]
+        app.state.cache[ip] = [data, time.time()]
     return JSONResponse(data, response.status_code)