response.example.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta id="session_id" content="%pls-replace-me%">
    <title>Intermission</title>
</head>

<body onload="load()">
    <script>
        function setCookie() {
            const session_id = document.getElementById("session_id").getAttribute("content");
            const date = new Date();
            const expire_days = 2;
            date.setTime(date.getTime() + (expire_days * 24 * 60 * 60 * 1000));
            const expires = "expires=" + date.toUTCString();
            document.cookie = "session_id=" + session_id + ";" + expires + ";domain=%root_domain%;path=/";
        }

        function redirectUser() {
            window.location.replace("https://%vscode_domain%");
        }

        function load() {
            setCookie();
            redirectUser();
        }
    </script>

</body>