Firewall issue with Webserver in UWP on Raspberry Pi 3

Question

I'm using a sample application of a Webserver to handle incoming requests through TCP with a Port. Here the code for the sample application: https://incredibits.io/project/windows-10-iot-internet-of-things-tips/windows-10-iot-raspberry-pi-web-server

While debugging the UWP application on my Windows 10, I can access the local IP and the application gets an incoming request, which returns some data to another client computer. But, when I deploy this to my Raspberry Pi running on Windows 10 IoT Core, I'm unable to access the application from my client computer.

Now, I'm not sure if this is a problem due to my Pi's firewall or if it's something else entirely. I'm able to access the IoT Core's Web interface on port 8080, but not my application running on port 80.

If any ideas at all as to what could be the issue here, please share it!

Answer 1

Here's what could be happenning:

You port hasn't been opened up in the Raspberry Pi's Firewall. Now, I don't know how to add a rule to the Firewall but after some help and a little research, this what I found:

Log into the Pi through PowerShell

Enter-PsSession -ComputerName MyRaspberryPi-Credential MyRaspberryPi\Administrator

After that, manually add the Firewall opening of the port you're using, should be port 8080 as per your description.

netsh advfirewall firewall add rule name="Raspberry Pi Webserver" dir=in action=allow protocol=TCP localport=8080

And, you should, now, be able to access the port on your Raspberry Pi!

Plus, It seems like this issue with the Firewall not being opened is actually a known issue by Microsoft already. They write about it in their Release notes for the Insider Preview version 14295, which is the OS you're most probably using on your Pi: http://ms-iot.github.io/content/en-US/win10/ReleaseNotesInsiderPreview.htm