Is it possible that I put the xpc module inside other application, use that application as the host and it launch the xpc as demand of plugin, could the DAL plugin talk to the XPC module? -Steven

In that case, I'll need implement one gateway between them so that they could communicate each other. -Steven

move to answer for better formating

Thanks a lot, is there any api to check if a connection is suspended? -Steven

I didn't call suspend api against the connection, still possible the connection was suspended? -Steven

This is caused by the microphone is using by other application, I know multiple app can share one camera video, audio shall be able too, how do we fix this problem?

BTW, is XPC service outside of a GUI security session? it could be the problem

:)

:)