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Vivox Core SDK

Open UDP ports during Windows app installation

Managing ports in Windows applications.
Read time 1 minuteLast updated 20 hours ago
When writing a Windows application you can avoid opening ports for your application by setting the 
minimun_port
and 
maximum_port
in 
vx_config
to 0. This is the default setting in Windows.

Setting UDP ports

If you don’t use the default or set the ports to zero, you must ensure that your app installer runs with elevated privileges and that you open User Datagram Protocol (UDP) ports for your app. This prevents Windows Defender from prompting users to allow the app, which can occur when they join a channel for the first time if UDP ports are not open during the installation of a Windows app. To open the UDP ports, run your app installer with elevated privileges and then perform either of the following actions:
  • Open the specific UDP ports that you intend to use for the app (for example, 
    minimum_port
    and 
    maximum_port
    as specified in 
    vx_req_connector_create
    ).
  • Open all UDP ports for the app.
The following code displays an example of how to open all UDP ports: 
netsh advfirewall firewall add rule name="SDKSampleApp" program="C:\Program Files\Vivox\SDKSampleApp\SDKSampleApp.exe" dir=in action=allow protocol=UDP enable=yes