Error popup in browser

riwang

Hi,

When I was running my web app, occasionally I got an LS error popup showing:

Error 120
Warning: there is probably another web application connected to the same Lightstreamer Server within this browser instance. That could prevent the current application from connecting to the Server. Please close the other application to unblock the current one.

But I didn't have another application running in another tab of the same browser. Can anyone please advise how this error could possibly happen?

Since my web app was running fine even after showing this error popup, I'd like to suppress the error popup. I've set the following in my javascript:

    
    pushpage.context.setDebugAlertsOnClientError(false);
    pushpage.context.setRemoteAlertsOnClientError(true);
    eng.context.setDebugAlertsOnClientError(false);
    eng.context.setRemoteAlertsOnClientError(true);

But I still get this error popup. Can anyone please advise how to suppress it?

Thanks,
Richard

Mone

you can suppress such alerts through the following methods:
PushPage.onClientAlert
Lightstreamer.Engine.onClientAlert

riwang

Thanks Mone.

stephenlam

Hi,

I have the same issue which web client occasionally prompt such warning message. Why the system prompts this warning message? I only opened 1 tab running Lightstreamer web client on firefox.

Thanks!

Stephen

Mone

hi,

there were some false positive on older clients, do you still see the alert with our latest release (web client 4.4)?

stephenlam

I'm now using 4.3.1. I think I need to upgrade it.

In case of false positive. Do you recommend I suppress it by following methods?
PushPage.onClientAlert
Lightstreamer.Engine.onClientAlert

Thanks!

Best Regards,
Stephen Lam

Mone

the alert does not interferes with the functioning of the library so, it's up to you :Smile_Ab:
removing the alert removes both false positive and correct messages.

You may reimplement the callbacks by showing an html message somewhere instead of using an alert so that it's less invasive from an user point of view.

porque

I have exactly the same problem with current versions and although it has been several years my web continues to generate the error code . mainly Opera, is there some solution?

Giuseppe Corti

Hi porque,

Please could you confirm the exact version and build number in use?

Giuseppe Corti

Hi Dantzler,

The error discussed here refers to very old versions of the client library. With newer versions (> = 6) it should never appear.

Please specify the version and build number of the client library and the version of the server accurately.
You could also enable the debug log of the client library and share with us a significative snippet.

Regards,
Giuseppe