Unable to print from local area network

[Louise Mendoza]

Hi QZ,

We have been using QZ Tray for quite some time without any issues; however, today we encountered a problem. Our system is now experiencing an issue where the local IP address used in our code is being blocked by Chrome. When attempting to print from our web application, it indicates that the connection is not secure and prompts us to allow access to local area network devices. We have already granted this permission, but printing still does not work.

Upon checking the Chrome console, we found the following message:
“Connecting to a non-secure WebSocket server from a secure origin is deprecated.”

To be honest, I am not experienced with this issue, and your guidance would be highly appreciated.

We have attached screenshots for your reference.

Thank you

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Kind Regards

Louise Fernan Mendoza

IT Specialist

lou...@lalagunavillas.com.ph

+63 917 130 6602

Small Lalaguna Sabang beach, Puerto Galera

Oriental Mindoro 5203 Philippines

Web:       www.llv.ph

Email:     in...@lalagunavillas.com.ph

Mobile:    +63 917 570-3415

[Tres Finocchiaro]

Yeah.... in short, you'll need to access the site using HTTPS.  Until you can have that switched, you'll have to trick Chrome into thinking it's secure... This is done with the chrome://flags/#unsafely-treat-insecure-origin-as-secure

Add your website there you can get it switched to HTTPS.

Why HTTPS?  Well, starting with Chrome 147 and higher we can FINALLY connect a secure page to the insecure WebSocket port.... This requires ANOTHER change and that's to specify `usingSecure: false`.  https://qz.io/api/qz.websocket#.connect (yeah we've had this around for a while but it was historically blocked).

Hopefully that helps... add the exception for now, fix the website when everyone's on Chrome 147+.

Note, Edge 147 seems to be the same.

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[Louise Mendoza]

Hi Tres,

Thank you for the advice. We were able to get the printing working again by adding our website to the allowed list.

Cheers!