pa-socket-bridge: exit on existing socket and update description

pa-socket-bridge.py

@@ -1,10 +1,10 @@
-# Pulseaudio Socket Bridge v1.0
+# Pulseaudio Socket Bridge v1.0.1
 # by Zoey Mae (izalia@barkshark.xyz)
-
-# Creates a socket to listen on and sends any connections to the specified 
-# Pulseaudio server. Requires socat which should be in your distro's repos.
-# Socat will try to reconnect and will be restarted if closed for any reason
-
+#
+# Creates a unix socket to listen on and sends any connections to the specified
+# Pulseaudio server via socat. Socat will try to reconnect and will be restarted
+# if closed for any reason
+#
 # Usage:
 # pa-socket-bridge.py [server ip]
 
@@ -20,12 +20,14 @@ except IndexError:
 
 sock_path = Path(f'/var/run/user/{os.getuid()}/pulse/native')
 command = ['socat', f'UNIX-LISTEN:{sock_path},fork,reuseaddr,mode=777', f'TCP:{server}:4713,retry']
+shutdown = False
 
 if not sock_path.parent.exists():
 	sock_path.mkdir(parents=True)
 
 if sock_path.exists():
-	print('Warning: Socket exists. Is Pulseaudio running?')
+	print('Socket already exists. Is Pulseaudio or another bridge running?')
+	sys.exit()
 
 
 def signal_handler(func, *args, **kwargs):
@@ -44,15 +46,15 @@ def handle_shutdown(signum, frame):
 
 if __name__ == '__main__':
 	print('Starting Pulseaudio socket bridge')
-	proc = Popen(command)
-	shutdown = False
-	timer = 0.0
 
 	signal_handler(handle_shutdown)
 
+	proc = Popen(command)
+	timer = 0.0
+
 	while not shutdown:
 		if proc.poll() != None:
-			print('Starting Pulseaudio socket bridge back up')
+			print('Restarting process')
 			proc = Popen(command)
 
 		time.sleep(0.25)
@@ -65,9 +67,8 @@ if __name__ == '__main__':
 		timer += 0.25
 
 		if timer >= 5.0:
-			
 			proc.kill()
-			print('Process failed to terminate. Killing process.')
+			print('Socat failed to terminate. Killing process.')
 			break
 
 	print('Bye! :3')