all: use Device instead of Address in SetConnectHandler

This makes it possible to discover services on a connected central while
in peripheral mode, for example.

adapter.go

@@ -6,6 +6,6 @@ const debug = false
 // SetConnectHandler sets a handler function to be called whenever the adaptor connects
 // or disconnects. You must call this before you call adaptor.Connect() for centrals
 // or adaptor.Start() for peripherals in order for it to work.
-func (a *Adapter) SetConnectHandler(c func(device Address, connected bool)) {
+func (a *Adapter) SetConnectHandler(c func(device Device, connected bool)) {
 	a.connectHandler = c
 }

adapter_darwin.go

@@ -24,7 +24,7 @@ type Adapter struct {
 	// used to allow multiple callers to call Connect concurrently.
 	connectMap sync.Map
 
-	connectHandler func(device Address, connected bool)
+	connectHandler func(device Device, connected bool)
 }
 
 // DefaultAdapter is the default adapter on the system.
@@ -35,7 +35,7 @@ var DefaultAdapter = &Adapter{
 	pm:         cbgo.NewPeripheralManager(nil),
 	connectMap: sync.Map{},
 
-	connectHandler: func(device Address, connected bool) {
+	connectHandler: func(device Device, connected bool) {
 		return
 	},
 }
@@ -106,7 +106,7 @@ func (cmd *centralManagerDelegate) DidDisconnectPeripheral(cmgr cbgo.CentralMana
 	addr := Address{}
 	uuid, _ := ParseUUID(id)
 	addr.UUID = uuid
-	cmd.a.connectHandler(addr, false)
+	cmd.a.connectHandler(Device{Address: addr}, false)
 
 	// like with DidConnectPeripheral, check if we have a chan allocated for this and send through the peripheral
 	// this will only be true if the receiving side is still waiting for a connection to complete

adapter_linux.go

@@ -23,7 +23,7 @@ type Adapter struct {
 	address              string
 	defaultAdvertisement *Advertisement
 
-	connectHandler func(device Address, connected bool)
+	connectHandler func(device Device, connected bool)
 }
 
 // DefaultAdapter is the default adapter on the system. On Linux, it is the
@@ -32,7 +32,7 @@ type Adapter struct {
 // Make sure to call Enable() before using it to initialize the adapter.
 var DefaultAdapter = &Adapter{
 	id: defaultAdapter,
-	connectHandler: func(device Address, connected bool) {
+	connectHandler: func(device Device, connected bool) {
 	},
 }
 

adapter_ninafw.go

@@ -19,7 +19,7 @@ type Adapter struct {
 	isDefault bool
 	scanning  bool
 
-	connectHandler func(device Address, connected bool)
+	connectHandler func(device Device, connected bool)
 
 	connectedDevices     []Device
 	notificationsStarted bool
@@ -30,7 +30,7 @@ type Adapter struct {
 // Make sure to call Enable() before using it to initialize the adapter.
 var DefaultAdapter = &Adapter{
 	isDefault: true,
-	connectHandler: func(device Address, connected bool) {
+	connectHandler: func(device Device, connected bool) {
 		return
 	},
 	connectedDevices: make([]Device, 0, maxConnections),

adapter_nrf51.go

@@ -44,8 +44,11 @@ func handleEvent() {
 		case C.BLE_GAP_EVT_CONNECTED:
 			currentConnection.handle.Reg = uint16(gapEvent.conn_handle)
 			connectEvent := gapEvent.params.unionfield_connected()
-			address := Address{makeMACAddress(connectEvent.peer_addr)}
+			device := Device{
-			DefaultAdapter.connectHandler(address, true)
+				Address:          Address{makeMACAddress(connectEvent.peer_addr)},
+				connectionHandle: gapEvent.conn_handle,
+			}
+			DefaultAdapter.connectHandler(device, true)
 		case C.BLE_GAP_EVT_DISCONNECTED:
 			if defaultAdvertisement.isAdvertising.Get() != 0 {
 				// The advertisement was running but was automatically stopped
@@ -57,7 +60,10 @@ func handleEvent() {
 				defaultAdvertisement.start()
 			}
 			currentConnection.handle.Reg = C.BLE_CONN_HANDLE_INVALID
-			DefaultAdapter.connectHandler(Address{}, false)
+			device := Device{
+				connectionHandle: gapEvent.conn_handle,
+			}
+			DefaultAdapter.connectHandler(device, false)
 		case C.BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
 			// Respond with the default PPCP connection parameters by passing
 			// nil:

adapter_nrf528xx-full.go

@@ -25,21 +25,24 @@ func handleEvent() {
 		switch id {
 		case C.BLE_GAP_EVT_CONNECTED:
 			connectEvent := gapEvent.params.unionfield_connected()
-			address := Address{makeMACAddress(connectEvent.peer_addr)}
+			device := Device{
+				Address:          Address{makeMACAddress(connectEvent.peer_addr)},
+				connectionHandle: gapEvent.conn_handle,
+			}
 			switch connectEvent.role {
 			case C.BLE_GAP_ROLE_PERIPH:
 				if debug {
 					println("evt: connected in peripheral role")
 				}
 				currentConnection.handle.Reg = uint16(gapEvent.conn_handle)
-				DefaultAdapter.connectHandler(address, true)
+				DefaultAdapter.connectHandler(device, true)
 			case C.BLE_GAP_ROLE_CENTRAL:
 				if debug {
 					println("evt: connected in central role")
 				}
 				connectionAttempt.connectionHandle = gapEvent.conn_handle
 				connectionAttempt.state.Set(2) // connection was successful
-				DefaultAdapter.connectHandler(address, true)
+				DefaultAdapter.connectHandler(device, true)
 			}
 		case C.BLE_GAP_EVT_DISCONNECTED:
 			if debug {
@@ -62,7 +65,10 @@ func handleEvent() {
 				// necessary.
 				C.sd_ble_gap_adv_start(defaultAdvertisement.handle, C.BLE_CONN_CFG_TAG_DEFAULT)
 			}
-			DefaultAdapter.connectHandler(Address{}, false)
+			device := Device{
+				connectionHandle: gapEvent.conn_handle,
+			}
+			DefaultAdapter.connectHandler(device, false)
 		case C.BLE_GAP_EVT_CONN_PARAM_UPDATE:
 			if debug {
 				// Print connection parameters for easy debugging.

adapter_nrf528xx-peripheral.go

@@ -29,7 +29,11 @@ func handleEvent() {
 			}
 			currentConnection.handle.Reg = uint16(gapEvent.conn_handle)
 			connectEvent := gapEvent.params.unionfield_connected()
-			DefaultAdapter.connectHandler(Address{makeMACAddress(connectEvent.peer_addr)}, true)
+			device := Device{
+				Address:          Address{makeMACAddress(connectEvent.peer_addr)},
+				connectionHandle: gapEvent.conn_handle,
+			}
+			DefaultAdapter.connectHandler(device, true)
 		case C.BLE_GAP_EVT_DISCONNECTED:
 			if debug {
 				println("evt: disconnected")
@@ -45,7 +49,10 @@ func handleEvent() {
 				// necessary.
 				C.sd_ble_gap_adv_start(defaultAdvertisement.handle, C.BLE_CONN_CFG_TAG_DEFAULT)
 			}
-			DefaultAdapter.connectHandler(Address{}, false)
+			device := Device{
+				connectionHandle: gapEvent.conn_handle,
+			}
+			DefaultAdapter.connectHandler(device, false)
 		case C.BLE_GAP_EVT_DATA_LENGTH_UPDATE_REQUEST:
 			// We need to respond with sd_ble_gap_data_length_update. Setting
 			// both parameters to nil will make sure we send the default values.

adapter_sd.go

@@ -48,7 +48,7 @@ type Adapter struct {
 	scanning          bool
 	charWriteHandlers []charWriteHandler
 
-	connectHandler func(device Address, connected bool)
+	connectHandler func(device Device, connected bool)
 }
 
 // DefaultAdapter is the default adapter on the current system. On Nordic chips,
@@ -56,7 +56,7 @@ type Adapter struct {
 //
 // Make sure to call Enable() before using it to initialize the adapter.
 var DefaultAdapter = &Adapter{isDefault: true,
-	connectHandler: func(device Address, connected bool) {
+	connectHandler: func(device Device, connected bool) {
 		return
 	}}
 

adapter_windows.go

@@ -12,14 +12,14 @@ import (
 type Adapter struct {
 	watcher *advertisement.BluetoothLEAdvertisementWatcher
 
-	connectHandler func(device Address, connected bool)
+	connectHandler func(device Device, connected bool)
 }
 
 // DefaultAdapter is the default adapter on the system.
 //
 // Make sure to call Enable() before using it to initialize the adapter.
 var DefaultAdapter = &Adapter{
-	connectHandler: func(device Address, connected bool) {
+	connectHandler: func(device Device, connected bool) {
 		return
 	},
 }

examples/circuitplay/main.go

@@ -38,7 +38,7 @@ func main() {
 	neo.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	ws = ws2812.New(neo)
 
-	adapter.SetConnectHandler(func(d bluetooth.Address, c bool) {
+	adapter.SetConnectHandler(func(d bluetooth.Device, c bool) {
 		connected = c
 
 		if !connected && !disconnected {

examples/stop-advertisement/main.go

@@ -21,7 +21,7 @@ func main() {
 	must("config adv", adv.Configure(bluetooth.AdvertisementOptions{
 		LocalName: "Go Bluetooth",
 	}))
-	adapter.SetConnectHandler(func(device bluetooth.Address, connected bool) {
+	adapter.SetConnectHandler(func(device bluetooth.Device, connected bool) {
 		if connected {
 			println("connected, not advertising...")
 			advState = false

gap_darwin.go

@@ -85,6 +85,8 @@ func (a *Adapter) StopScan() error {
 
 // Device is a connection to a remote peripheral.
 type Device struct {
+	Address Address
+
 	*deviceInternal
 }
 
@@ -137,7 +139,8 @@ func (a *Adapter) Connect(address Address, params ConnectionParams) (Device, err
 			}
 
 			d := Device{
-				&deviceInternal{
+				Address: address,
+				deviceInternal: &deviceInternal{
 					cm:           a.cm,
 					prph:         p,
 					servicesChan: make(chan error),
@@ -148,7 +151,7 @@ func (a *Adapter) Connect(address Address, params ConnectionParams) (Device, err
 			d.delegate = &peripheralDelegate{d: d}
 			p.SetDelegate(d.delegate)
 
-			a.connectHandler(address, true)
+			a.connectHandler(d, true)
 
 			return d, nil
 

gap_linux.go

@@ -292,9 +292,10 @@ func makeScanResult(props map[string]dbus.Variant) ScanResult {
 
 // Device is a connection to a remote peripheral.
 type Device struct {
+	Address Address // the MAC address of the device
+
 	device  dbus.BusObject // bluez device interface
 	adapter *Adapter       // the adapter that was used to form this device connection
-	address Address        // the address of the device
 }
 
 // Connect starts a connection attempt to the given peripheral device address.
@@ -303,9 +304,9 @@ type Device struct {
 func (a *Adapter) Connect(address Address, params ConnectionParams) (Device, error) {
 	devicePath := dbus.ObjectPath(string(a.adapter.Path()) + "/dev_" + strings.Replace(address.MAC.String(), ":", "_", -1))
 	device := Device{
+		Address: address,
 		device:  a.bus.Object("org.bluez", devicePath),
 		adapter: a,
-		address: address,
 	}
 
 	// Already start watching for property changes. We do this before reading

gap_nrf528xx-central.go

@@ -92,11 +92,6 @@ func (a *Adapter) StopScan() error {
 	return nil
 }
 
-// Device is a connection to a remote peripheral.
-type Device struct {
-	connectionHandle C.uint16_t
-}
-
 // In-progress connection attempt.
 var connectionAttempt struct {
 	state            volatile.Register8 // 0 means unused, 1 means connecting, 2 means ready (connected or timeout)

gap_sd.go

@@ -0,0 +1,15 @@
+//go:build softdevice
+
+package bluetooth
+
+/*
+#include "ble_gap.h"
+*/
+import "C"
+
+// Device is a connection to a remote peripheral or central.
+type Device struct {
+	Address Address
+
+	connectionHandle C.uint16_t
+}