fake_trx/udp_link.py: close socket in destructor

Previously it was required to call the UDPLink.shutdown() method
manually in order to close a socket. Let's do this automatically
using the destructor of UDPLink.

Change-Id: I59c3dc61ec58cd9effeb789947d28fd602ca91f4

8 files changed, 3 insertions, 38 deletions

diff --git a/src/target/fake_trx/burst_gen.py b/src/target/fake_trx/burst_gen.py
index 9f366874..c2e1ad2d 100755
--- a/src/target/fake_trx/burst_gen.py
+++ b/src/target/fake_trx/burst_gen.py
@@ -143,8 +143,6 @@ class Application:
 			if self.output_file is not None:
 				self.ddf.append_msg(msg)
 
-		self.shutdown()
-
 	def print_copyright(self):
 		print(COPYRIGHT)
 
@@ -237,13 +235,9 @@ class Application:
 			self.print_help("[!] Unknown burst type")
 			sys.exit(2)
 
-	def shutdown(self):
-		self.data_if.shutdown()
-
 	def sig_handler(self, signum, frame):
 		print("Signal %d received" % signum)
 		if signum is signal.SIGINT:
-			self.shutdown()
 			sys.exit(0)
 
 if __name__ == '__main__':
diff --git a/src/target/fake_trx/burst_send.py b/src/target/fake_trx/burst_send.py
index 87f9228b..61a526f6 100755
--- a/src/target/fake_trx/burst_send.py
+++ b/src/target/fake_trx/burst_send.py
@@ -100,9 +100,6 @@ class Application:
 			# Send message
 			self.data_if.send_msg(msg)
 
-		# Finish
-		self.shutdown()
-
 	def msg_pass_filter(self, l12trx, msg):
 		# Direction filter
 		if isinstance(msg, DATAMSG_L12TRX) and not l12trx:
@@ -216,13 +213,9 @@ class Application:
 			self.print_help("[!] Please specify a capture file")
 			sys.exit(2)
 
-	def shutdown(self):
-		self.data_if.shutdown()
-
 	def sig_handler(self, signum, frame):
 		print("Signal %d received" % signum)
 		if signum is signal.SIGINT:
-			self.shutdown()
 			sys.exit(0)
 
 if __name__ == '__main__':
diff --git a/src/target/fake_trx/clck_gen.py b/src/target/fake_trx/clck_gen.py
index 484ecde5..e7e58a3b 100755
--- a/src/target/fake_trx/clck_gen.py
+++ b/src/target/fake_trx/clck_gen.py
@@ -114,7 +114,6 @@ class Application:
 		print("Signal %d received" % signum)
 		if signum is signal.SIGINT:
 			self.clck.stop()
-			self.link.shutdown()
 
 if __name__ == '__main__':
 	app = Application()
diff --git a/src/target/fake_trx/ctrl_cmd.py b/src/target/fake_trx/ctrl_cmd.py
index 377a1f26..3faf8127 100755
--- a/src/target/fake_trx/ctrl_cmd.py
+++ b/src/target/fake_trx/ctrl_cmd.py
@@ -129,7 +129,6 @@ class Application:
 	def sig_handler(self, signum, frame):
 		print("\n\nSignal %d received" % signum)
 		if signum is signal.SIGINT:
-			self.ctrl_link.shutdown()
 			sys.exit(0)
 
 if __name__ == '__main__':
diff --git a/src/target/fake_trx/ctrl_if_bb.py b/src/target/fake_trx/ctrl_if_bb.py
index 440094a0..47c70484 100644
--- a/src/target/fake_trx/ctrl_if_bb.py
+++ b/src/target/fake_trx/ctrl_if_bb.py
@@ -36,10 +36,6 @@ class CTRLInterfaceBB(CTRLInterface):
 		print("[i] Init CTRL interface for BB")
 		CTRLInterface.__init__(self, remote_addr, remote_port, bind_port)
 
-	def shutdown(self):
-		print("[i] Shutdown CTRL interface for BB")
-		CTRLInterface.shutdown(self)
-
 	def parse_cmd(self, request):
 		# Power control
 		if self.verify_cmd(request, "POWERON", 0):
diff --git a/src/target/fake_trx/ctrl_if_bts.py b/src/target/fake_trx/ctrl_if_bts.py
index d0a7db3c..92a4abb2 100644
--- a/src/target/fake_trx/ctrl_if_bts.py
+++ b/src/target/fake_trx/ctrl_if_bts.py
@@ -37,10 +37,6 @@ class CTRLInterfaceBTS(CTRLInterface):
 		print("[i] Init CTRL interface for BTS")
 		CTRLInterface.__init__(self, remote_addr, remote_port, bind_port)
 
-	def shutdown(self):
-		print("[i] Shutdown CTRL interface for BTS")
-		CTRLInterface.shutdown(self)
-
 	def parse_cmd(self, request):
 		# Power control
 		if self.verify_cmd(request, "POWERON", 0):
diff --git a/src/target/fake_trx/fake_trx.py b/src/target/fake_trx/fake_trx.py
index 4f6d8c6b..bdc4c614 100755
--- a/src/target/fake_trx/fake_trx.py
+++ b/src/target/fake_trx/fake_trx.py
@@ -125,18 +125,6 @@ class Application:
 		# Stop clock generator
 		self.clck_gen.stop()
 
-		# Close CLCK interfaces
-		self.bts_clck.shutdown()
-
-		# Close CTRL interfaces
-		self.bts_ctrl.shutdown()
-		self.bb_ctrl.shutdown()
-
-		# Close DATA interfaces
-		self.bts_data.shutdown()
-		self.bb_data.shutdown()
-
-
 	def print_copyright(self):
 		print(COPYRIGHT)
 
diff --git a/src/target/fake_trx/udp_link.py b/src/target/fake_trx/udp_link.py
index 0afd1504..c0c41ff6 100644
--- a/src/target/fake_trx/udp_link.py
+++ b/src/target/fake_trx/udp_link.py
@@ -35,6 +35,9 @@ class UDPLink:
 		self.remote_addr = remote_addr
 		self.remote_port = remote_port
 
+	def __del__(self):
+		self.sock.close()
+
 	def loop(self):
 		r_event, w_event, x_event = select.select([self.sock], [], [])
 
@@ -43,9 +46,6 @@ class UDPLink:
 			data, addr = self.sock.recvfrom(128)
 			self.handle_rx(data.decode())
 
-	def shutdown(self):
-		self.sock.close();
-
 	def send(self, data):
 		if type(data) not in [bytearray, bytes]:
 			data = data.encode()