Setting Up Multiple Transports

The Multiple Transports feature allows apps connected to SDL Core to start another connection over a different transport for certain services. For example, an app connected over Bluetooth can use WiFi as a Secondary Transport for video streaming. This guide will walk you through how to configure the Multiple Transports feature using the smartDeviceLink.ini file.

Initial Setup

Modify the following lines in smartDeviceLink.ini.

• To enable Multiple Transports in Core:

[MultipleTransports]
...
MultipleTransportsEnabled = true

• To set the available Secondary Transport types for a given Primary Transport:

[MultipleTransports]
...
SecondaryTransportForBluetooth = WiFi
;SecondaryTransportForUSB =
;SecondaryTransportForWiFi =

Note

The values which can be used in the SecondaryTransportFor configuration are WiFi, Bluetooth and USB

Audio and Video Streaming

Modify the services map in smartdeviceLink.ini to restrict video and audio streaming services to specific transport types.

[ServicesMap]
...
AudioServiceTransports = TCP_WIFI
VideoServiceTransports = TCP_WIFI, AOA_USB

• Transports are listed in preferred order
• If a transport is not listed, then the service is not allowed to run on that transport
• If the AudioServiceTransports/VideoServiceTransports line is omitted, the corresponding service will be allowed to run on the Primary Transport

Secondary Transport Types

Resources

For more information on how the Multiple Transports feature works, see the Feature Documentation.