Suicide at keyboard interrupt

That's a bug, the program does not close at keyboard interruption because of threads, I pu a suicide function at the end, but suicide is never the solution.

README.md

@@ -15,3 +15,9 @@ These libraries are under GNU GPL v3. See [license](LICENSE) for more details.
 This program requires Python interpretator and access to Android API. Access to Android API is provided by the API addon and the termux-api package.
 
 Once installed, just run the sms.py script with the python interpretator and connect a browser to phone, on port 8080.
+
+# Note on security
+
+This webserver listen on HTTP, so the traffic between phone and browser is in plain text.
+
+The webserver will only serve the first IP (v4 ou v6) that connect to it, all the other will recieve a 403 error. The server log will show that the server locks on a specific IP when the first client will connect.

sms.py

@@ -8,7 +8,7 @@ from socket import AF_INET6
 from threading import Thread
 from time import sleep
 from cgi import FieldStorage
-from sys import exit
+from os import kill, getpid
 
 sms_list_program = '/data/data/com.termux/files/usr/bin/termux-sms-list'
 sms_send_program = '/data/data/com.termux/files/usr/bin/termux-sms-send'
@@ -357,4 +357,6 @@ if __name__ == '__main__':
 	except KeyboardInterrupt:
 		print ('Interrupt received, closing process…')
 		server.server_close ()
-		exit (0)
+		# BUG: the program must kill itself to end or the user must send Ctrl+C several time to close
+		# TODO: find another way to close the program in one action, suicide is never the solution
+		kill (getpid (), 15)