getL2CAPPSM(_:)

Allows the discovery of the L2CAP PSM assigned to the service.

Declaration

func getL2CAPPSM(_ outPSM: UnsafeMutablePointer<BluetoothL2CAPPSM>!) -> IOReturn

Parameters

outPSM:
A pointer to the location that will get the found L2CAP PSM.

Return Value

Returns kIOReturnSuccess if the PSM is found.

Discussion

This method will search through the ProtoclDescriptorList attribute to find an entry with the L2CAP UUID (UUID16: 0x0100). If one is found, it gets the second element of the data element sequence and sets the outPSM pointer to it. The PSM value only gets set when kIOReturnSuccess is returned.