Error Message
When a failed login occurs from Captive Portal, the user will be redirected to the splash page again with 2 additional query parameters res and reason to indicate the error. The https request to the splash page could be like this:
https://yourwebsite.com/splash.html?actionurl=......&res=failed&reason=xxxx
These 2 parameters can be used for displaying error message on splash page. The usage is depicted in the following table:
Parameters | Description |
|---|---|
res=failed&reason=reject | Invalid username or password. |
res=failed&reason=timeout | No response from authentication server. |
res=failed&reason=mtu | Abnormal network error. |
res=failed&reason=other | Other errors. |
The following JavaScript code illustrates how to display error message in splash page.
<script>
function check_error(){
const params = new Proxy(new URLSearchParams(window.location.search), {
get: (searchParams, prop) => searchParams.get(prop),
});
if (params.res === "failed") {
switch(params.reason) {
case "reject":
alert("Invalid Username or Password.");
break;
case "timeout":
alert("No response from authentication server.");
break;
case "mtu":
alert("Abnormal network error.");
break;
case "other":
alert("Other errors.");
break;
default:
alert("Other errors. (no reason)");
}
}
}
</script>
</head>
<body onload="check_error()" style="">
Last modified 9mo ago