CODEWITHSUNDEEP
socketsuwp
Incipient
Incipient

Reputation: 59

UWP Sockets Unable to Connect Over LAN

I am having some issues with sockets in UWP.

I'm trying to test some simple socket communications (stripped down version of the MSDN example) between a mobile and a desktop on the same LAN subnet. I am developing in a VM (on a separate desktop) and can deploy to the VM and mobile. In that case connections work fine.

When I create an app package and install it on the desktop, I cannot connect.

I have windows firewall on the desktop completely off. The VM is set to have a separate IP on the network. I have checked all IPs I'm using are correct.

I am getting the typical: A connection attempt failed because the connected party did not properly respond after a period of time

This is driving me crazy, if anyone has any helpful advice that would be much appreciated!

edit: To clarify the above.

My app has both both client and server roles (can connect to a listener, and is also listening itself).

App (on Mobile) --> App (on VM, deployed from VS) - this works fine, Mobile can connect to VM no problem.

App (on Mobile) --> App (on Desktop, installed from appx) - Mobile unable to connect to Desktop. Firewall on desktop disabled. Task Manager shows .exe listening on the correct port.

Thanks, Inci

Upvotes: 1

Views: 410

Answers (1)

Incipient
Incipient

Reputation: 59

Found a solution to this - it appears connections over LAN need to have the Internet(Client & Server) capability selected.

I am most certainly connecting over my local network (specifically 192.168.0.15 (mobile) to .21 (desktop). It seems that when deploying with VS the app doesn't need the Internet capability.

If there is a more 'correct' solution I'll amend this.

Upvotes: 2

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