view.html.erb

<script>
function setCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays*24*60*60*1000));
    var expires = "expires="+ d.toUTCString();
    document.cookie = cname + "=" + cvalue + "; " + expires + "; path=/rnode/<%= host %>/<%= port %>; secure";
}
setCookie("csrf-token=", "<%= csrftoken %>", 7)
setCookie("rs-csrf-token=", "<%= csrftoken %>", 7)
</script>

<form action="/rnode/<%= host %>/<%= port %>/auth-do-sign-in" method="post" target="_blank">
  <input type="hidden" name="username" value="<%= ENV["USER"] %>">
  <input type="hidden" name="password" value="<%= password %>">
  <input type="hidden" name="staySignedIn" value="1">
  <input type="hidden" name="appUri" value="">
  <input type="hidden" name="csrf-token" value="<%= csrftoken %>">
  <input type="hidden" name="rs-csrf-token" value="<%= csrftoken %>">
  <button class="btn btn-primary" type="submit">
    <i class="fa fa-registered"></i> Connect to RStudio Server
  </button>
</form>