how to connect to websocket in Lightning?
Tested WebSockets in Open CTI adapter url. It works perfectly fine. Change the ws:// uri as per your setup in below source code.
<html>
<head>
<script type="text/javascript" src="http://na11.salesforce.com/support/api/28.0/interaction.js"></script>
<script type="text/javascript">
var callback = function (response) {
if (response.result) {
alert('Screen pop was set successfully.');
}
else {
alert('Screen pop failed.' + result.error);
}
};
function screenPop() {
//Invokes API method
sforce.interaction.screenPop('/001x0000003DGQR', true, callback);
}
</script>
<script type="text/javascript">
var webSocket;
var data = "";
function openSocket()
{
// Open server socket
if (webSocket !== undefined && webSocket.readyState !== WebSocket.CLOSED) {
alert("WebSocket is already opened");
return;
}
webSocket = new WebSocket("ws://xxx.xxx.xxx.xxx:8080/sample/sampleendpoint");
if (webSocket === undefined)
{
alert("Error creating socket...");
return;
}
webSocket.onopen = function()
{
alert("in onopen callback");
}
webSocket.onmessage = function(event)
{
alert("in onmessage callback " + data);
}
webSocket.onclose = function()
{
alert("in onclose callback");
}
}
</script>
</head>
<body>
<button onclick="openSocket();">Open Socket</button>
</body>
</html>
This is a known limitation with lightning currently
However I see that your script is trying to make the call to a third party URL .You will need to identify the script and try and make the callout via apex .From lightning due to security limitations no XHR will be allowed .
The other workaround will be to proxy this via the Visualforce .There is a neat article on how to do this
Blog article from developer force
Also if the webserver is just returning a JSON without any processing you may download the file and keep inside static resource .
I'm not sure when this went live as there's still an open idea on this topic, but WebSockets are now supported in CSP Trusted Site settings.
Add you wss:// endpoint via Setup -> CSP Trusted Site and you should be good to go.