from http.server import BaseHTTPRequestHandler, HTTPServer


class Handler(BaseHTTPRequestHandler):
    protocol_version = "HTTP/1.1"

    def do_GET(self):
        body = "Hello, HTTP!".encode("utf-8")
        self.send_response(200)
        self.send_header("Content-Type", "text/plain; charset=utf-8")
        self.send_header("Content-Length", str(len(body)))
        self.send_header("Connection", "close")
        self.end_headers()
        self.close_connection = True
        self.wfile.write(body)


def main():
    with HTTPServer(("127.0.0.1", 8000), Handler) as server:
        print("http://127.0.0.1:8000/ を開いてください。終了は Ctrl+C", flush=True)
        try:
            server.serve_forever()
        except KeyboardInterrupt:
            print("サーバーを終了します")


if __name__ == "__main__":
    main()