In websocket programming I am getting the value of iswebsocketrequest false

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ASP.NET

Javascript

MVC

In websocket programming I am getting the value of IsWebSocketRequest false. I want to know why it is returning value false. ‍ ‍ ‍
Here's my JavaScript code.

What I have tried:

$('#openButton').click(function() {

try {

username = $('#txtuserid').val();
var url = "ws://" + window.location.host + '/api/Values?userid=' + username;
demoService = new WebSocket(url);
console.log(url);
demoService.onopen = function() {
$('#divmsg').append('Connection Opened
');
}

demoService.onmessage = function(message) {
var md = message.data;
if (md.substring(0, 5) == 'user:') {
$('#txloginuser').val(md.replace('user:', ''));
} else if (md.substring(0, 4) == 'key:') {
$('#txuserkey').val(md.replace('key:', ''));
} else {
$('#divmsg').append(message.data + "
");
}
}

demoService.onclose = function() {
try {
$('#divmsg').append("Connection Closed" + "
");
$('#txloginuser').val('');
$('#txuserkey').val('');
$('#txuserid').val('');
$('#divmsg').empty();
} catch (ex) {
alert(ex);
}
}


demoService.onerror = function(error) {
$('#divmsg').append(error.data + "
");
}
} catch (ex) {
alert(ex);
}
});