add unit tests and run in workflow

Co-authored-by: Cursor <cursoragent@cursor.com>

app.py

@@ -5,20 +5,32 @@ from datetime import datetime, timezone
 from http.server import BaseHTTPRequestHandler, HTTPServer
 
 
+def build_payload(headers, client_ip, method, path, now=None):
+    if now is None:
+        now = datetime.now(timezone.utc)
+
+    forwarded = headers.get("X-Forwarded-For", "")
+    ip = forwarded.split(",")[0].strip() if forwarded else client_ip
+
+    return {
+        "ip": ip,
+        "user_agent": headers.get("User-Agent", ""),
+        "method": method,
+        "path": path,
+        "timestamp": now.isoformat(),
+        "headers": dict(headers),
+    }
+
+
 class Handler(BaseHTTPRequestHandler):
     def _write_json(self, status=200):
-        client_ip = self.headers.get("X-Forwarded-For", "").split(",")[0].strip()
-        if not client_ip:
-            client_ip = self.client_address[0]
-
-        payload = {
-            "ip": client_ip,
-            "user_agent": self.headers.get("User-Agent", ""),
-            "method": self.command,
-            "path": self.path,
-            "timestamp": datetime.now(timezone.utc).isoformat(),
-            "headers": {k: v for k, v in self.headers.items()},
-        }
+        headers = {k: v for k, v in self.headers.items()}
+        payload = build_payload(
+            headers=headers,
+            client_ip=self.client_address[0],
+            method=self.command,
+            path=self.path,
+        )
 
         data = json.dumps(payload, ensure_ascii=False).encode("utf-8")
         self.send_response(status)