Moved to the standard error format, instead of log.Fatal

device.go

@@ -4,7 +4,6 @@ package gomotion
 
 import (
 	"code.google.com/p/go.net/websocket"
-	"log"
 )
 
 // The LeapMotionDevice definition. Connecting to a device will return an instance of this struct.
@@ -14,38 +13,40 @@ type LeapMotionDevice struct {
 }
 
 // This function acts as a constructor and connector for the gomotion package.
-func GetDevice(url string) *LeapMotionDevice {
+func GetDevice(url string) (*LeapMotionDevice, error) {
 	pipe := make(chan *Frame)
 	connection, err := websocket.Dial(url, "", "http://localhost")
 	if err != nil {
-		log.Fatal(err)
+		return nil, err
 	}
-	return &LeapMotionDevice{pipe, connection}
+	return &LeapMotionDevice{pipe, connection}, nil
 }
 
 // This function starts the listening on the WebSocket. By default it enables Gestures on the LeapMotionDevice.
-func (device *LeapMotionDevice) Listen() {
+func (device *LeapMotionDevice) Listen() (error) {
 	var config struct {
 		enableGestures bool `json:"enableGestures"`
 	}
 	config.enableGestures = true
 	err := websocket.JSON.Send(device.Connection, &config)
 	if err != nil {
-		log.Fatal(err)
+		return err
 	}
 	go device.listenRead()
+	return nil
 }
 
-func (device *LeapMotionDevice) listenRead() {
+func (device *LeapMotionDevice) listenRead() (error){
 	for {
 		var frame Frame
 		err := websocket.JSON.Receive(device.Connection, &frame)
 		if err == nil {
 			device.Pipe <- &frame
 		} else {
-			log.Fatal(err)
+			return err
 		}
 	}
+	return nil
 }
 
 // This function closes the internal WebSocket connection on a LeapMotionDevice