Since the last OSX update (Yosemite), my localhost server is full of error messages from airplay (but I am not using it). Each times it's the same:
[31/Oct/2014 05:40:42] code 400, message Bad request version ('RTSP/1.0')
[31/Oct/2014 05:40:42] "GET /info?txtAirPlay&txtRAOP RTSP/1.0" 400 -
It's just annoying to have its server full of error messages so if anyone has a clue to fix that or to remove airplay, I would be very thankful :)
I think I found the answer: On a cisco discovery forum they listed an nmap output that revealed the Yosemite discoveryd port ranges. Turns out the Apple is using port 5000:
PORT STATE SERVICE VERSION
3689/tcp open daap Apple iTunes DAAP 11.0.1d1
5000/tcp open rtsp Apple AirTunes rtspd 160.10 (Apple TV)
7000/tcp open http Apple AirPlay httpd
7100/tcp open http Apple AirPlay httpd
62078/tcp open tcpwrapped
5353/udp open mdns DNS-based service discovery
As you can imagine this is the default Flask port, just change your running port to anything other than 5000, and this problem should disappear. This Flask extension https://github.com/miguelgrinberg/Flask-Runner can make your life much easier than hard coding the port in the run command.