How to Check Uptime with a Synthetic HTTP Mock in Python

import http.server
import threading
import time
import urllib.request


class MockHandler(http.server.BaseHTTPRequestHandler):
    def do_GET(self):
        if self.path == "/health":
            self.send_response(200)
            self.send_header("Content-Type", "application/json")
            self.end_headers()
            self.wfile.write(b'{"status": "ok"}')
        else:
            self.send_response(404)
            self.end_headers()

    def log_message(self, format, *args):
        pass


def check_uptime(url, timeout=2):
    try:
        start = time.time()
        with urllib.request.urlopen(url, timeout=timeout) as response:
            elapsed = time.time() - start
            return response.status == 200, elapsed
    except Exception:
        return False, None


def main():
    server = http.server.HTTPServer(("127.0.0.1", 0), MockHandler)
    port = server.server_address[1]
    thread = threading.Thread(target=server.serve_forever, daemon=True)
    thread.start()

    url = f"http://127.0.0.1:{port}/health"
    for _ in range(3):
        up, response_time = check_uptime(url)
        print(f"Uptime: {up}, Response time: {response_time:.3f}s")
        time.sleep(0.2)

    server.shutdown()


if __name__ == "__main__":
    main()