Someone should put together a software AirTunes client… and it would be great if it was maybe cross platform, or at least OS X and 9. In addition, it runs RTSP on port 5000 the standard RTSP port is 544 so it’s clearly not intended to be “really” RTSP. I can’t tell if it’s a bug or just mean error reporting, but if you supply an RTSP ANNOUNCE with an SDP payload that doesn’t configure encryption, it simply closes the connection.

It uses ANNOUNCE, SETUP, RECORD RTSP methods, and extended attributes in SDP to configure the encryption. And it does use Rendezvous (_raop._tcp.).įrom dumping the protocol exchange, the iTunesexpress protocol is a modified RTSP+SDP, with a challenge/response from iTunes to make sure that it’s an airport express.

Although they added an encryption library too, so it might all be encrypted so you can’t easily hijack it. It probably has similar / same setups controls as the base stations, which includes passwords on the network and limiting connections to specified machines.įrom looking through the output of ‘strings iTunes’ on v4.6, it appears to just use RTSP/RTP. You can configure an airtunes password this prevents anyone without the password from connecting to an AirTunes service to stream to it. Yes you could high-jack airport expresses if you so desired What about passwords? It can’t be that anyone with a Mac and AirPortExtreme card can stream to any AirTunes services in the area? Will System Preferences allow the Sound output to go to such a service?ĭo not think so, iTunes only as the protocol is probably iTunes’s custom streaming protocol The AirPortExpress Base Station publishes a Rendezvous service of type _raop._tcp., i.e. The Airtunes 2 protocol is in the process of being described:Īllows streaming from iTunes to an AirPortExpress, which has audio-out which can then be connected to a stereo.ĭoes the AirPortExpress use Rendezvous to announce an audio streaming service on the LAN? So in theory other programs could a) use this service and b) announce similar services (in case you wanted your audio sent elsewhere)?

Airfoil audio lag