HTTP requests with Magic Leap

[kritig]

Unity Editor version : 2022.2.12f1
ML2 OS version : 1.12.1
Unity SDK version : 2.2.0
Host OS : Windows 11

I made a Flask API to handle requests to Gemini and send responses back to my application. The API works fine in the Unity editor, and I am able to send and receive. However, I run into problems when building to the headset and trying to send and receive from there. I made sure that both my desktop and the headset were connected to the same wifi and also added this line to my manifest (uses-permission android:name="android.permission.INTERNET"). However, I always get a "cannot connect to destination host" error. Are there some settings or other permissions I have to enable in order to allow an insecure connection from the headset? Or are permissions not the origin of the issue? I also tried using the IP address in the API URL, but that didn't work either. I am new to Magic leap and Unity so this might have an obvious solution that I am overlooking.

[dilmer]

I recommend launching the log feature through the Magic Leap Hub > Device Bridge the filter by entering "Unity". Also add a few try & catches around the areas with a generic exception.

Something like this:

try
{
    // HTTP Request GET / POST / ETC
}
catch (Exception e)
{
    Debug.LogError(e);
}

Then in the log, you will be able to see what error is getting generated, either from you mini web service or from the device.

[kritig]

Thanks for the response! I've been watching some of your video tutorials and really enjoy them.

I am using a yield return so I was not able to put it in a try catch, but I put in an if statement:

txt.text = "before send...";
yield return request.SendWebRequest();
txt.text = "sending...";
// Handle the response
if (request.result == UnityWebRequest.Result.ConnectionError || request.result == UnityWebRequest.Result.ProtocolError || request.result == UnityWebRequest.Result.DataProcessingError)
{
    Debug.LogError("Error: " + request.error);
    txt.text = "error..." + request.error;
}

I try to connect to http://[IP]:8000/ and the request ends up timing out on the headset (but works in Unity editor). I watched one of your videos and tested with https://resttesttest.com/ with an http url and was able to connect on the magic leap for that, so I guess it isn't a settings/privacy issue. However, I'm a bit lost on as to why the connection is timing out and if its an issue with the windows firewall or the port I'm using. Any insight would be appreciated!

[dilmer]

Check "Internet Access" setting and see if it is enabled:

[kritig]

It turns out it was a firewall issue (I am working on university computers). The issue is resolved now. Thank you for your help!