Modify way to close PID process

With our client disconnection, we hid that the ogClient process will be
closed too. This new way only close the subprocess keeping the ogClient
still working.

src/ogRest.py

@@ -291,6 +291,20 @@ class ogRest():
 
 		return 0
 
+	def kill_process(self):
+		try:
+			os.kill(self.proc.pid, signal.SIGTERM)
+		except:
+			pass
+
+		time.sleep(2)
+		try:
+			os.kill(self.proc.pid, signal.SIGKILL)
+		except:
+			pass
+
+		self.state = ThreadState.IDLE
+
 	def process_reboot(self, client):
 		response = restResponse(ogResponses.IN_PROGRESS)
 		client.send(response.get())
@@ -298,10 +312,7 @@ class ogRest():
 		client.disconnect()
 
 		if self.state == ThreadState.BUSY:
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGTERM)
-			time.sleep(2)
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGKILL)
-			self.state = ThreadState.IDLE
+			self.kill_process()
 
 		threading.Thread(target=ogThread.reboot).start()
 
@@ -312,10 +323,7 @@ class ogRest():
 		client.disconnect()
 
 		if self.state == ThreadState.BUSY:
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGTERM)
-			time.sleep(2)
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGKILL)
-			self.state = ThreadState.IDLE
+			self.kill_process()
 
 		threading.Thread(target=ogThread.poweroff).start()
 
@@ -358,10 +366,7 @@ class ogRest():
 	def process_stop(self, client):
 		client.disconnect()
 		if self.state == ThreadState.BUSY:
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGTERM)
-			time.sleep(2)
-			os.killpg(os.getpgid(self.proc.pid), signal.SIGKILL)
-			self.state = ThreadState.IDLE
+			self.kill_process()
 			self.terminated = True
 
 		sys.exit(0)