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JavaScript Check for HTTP Server on Local Network

I am currently working on a device that would connect to a Wi-Fi network and then host an HTTP server on the local network that you can connect to and configure the device. The problem is that the only way to access the device would be through its local IP. I'd like to make a program in JavaScript that would automatically check each device on the local network and determine the local IP of the device hosting the HTTP server and then redirect to it. Is there a way to do this? According to this answer it is possible to detect if a port is open using something like <img src="http://192.168.1.1/favicon.ico" onload="alert('Yay')" onerror="alert('No')">. Is this a good way of achieving this, and how would I apply this to scanning an entire network? Thanks


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