func doConnect(c *cli.Context) error {
if c.String("addr") != "" {
curr.addr = ble.NewAddr(c.String("addr"))
curr.client = curr.clients[curr.addr.String()]
}
if curr.client != nil {
return nil
}
return cmdConnect(c)
}
func cmdConnect(c *cli.Context) error {
curr.client = nil
var cln ble.Client
var err error
ctx := ble.WithSigHandler(context.WithTimeout(context.Background(), c.Duration("tmo")))
if c.String("addr") != "" {
curr.addr = ble.NewAddr(c.String("addr"))
fmt.Printf("Dialing to specified address: %s\n", curr.addr)
cln, err = ble.Dial(ctx, curr.addr)
} else if filter(c) != nil {
fmt.Printf("Scanning with filter...\n")
if cln, err = ble.Connect(ctx, filter(c)); err == nil {
curr.addr = cln.Address()
fmt.Printf("Connected to %s\n", curr.addr)
}
} else if curr.addr != nil {
fmt.Printf("Dialing to implicit address: %s\n", curr.addr)
cln, err = ble.Dial(ctx, curr.addr)
} else {
return fmt.Errorf("no filter specified, and cached peripheral address")
}
if err == nil {
curr.client = cln
curr.clients[cln.Address().String()] = cln
}
go func() {
<-cln.Disconnected()
delete(curr.clients, cln.Address().String())
curr.client = nil
fmt.Printf("\n%s disconnected\n", cln.Address().String())
}()
return err
}