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 :)