what protocol does plex cilent and plex server use?

[derekchan]

i install a plex media server on syno nas and add a nas locol storage as plex media content library. i use a android tv box running plex cilent to view content from nas via local network.

does plex use dlna or smb protocol to connect between nas and android tv box?

thank you

[Needfuldoer]

The Plex client gets its information from the Plex server running on your NAS. It doesn't browse directories by itself.

 

Once you pick something to play on the client, the server streams it over the network (probably as a UDP stream.)

[ToboRobot]

This was the first result of a google search for "plex protocol"
https://support.plex.tv/articles/201543147-what-network-ports-do-i-need-to-allow-through-my-firewall/

[derekchan]

19 hours ago, Needfuldoer said:

The Plex client gets its information from the Plex server running on your NAS. It doesn't browse directories by itself.

 

Once you pick something to play on the client, the server streams it over the network (probably as a UDP stream.)

Whenever I watch a video on the plex cilent and turn off the 
power of the TV box, the plex server running on the nas obtain 
information from internet and the hdd spins quickly, but the 
problem is solved when I disable the plex server on the nas.
can i fix it?
beside, the software I run iso2dsd is based on java runtime
environment, every time I run iso2dsd I find that the 
cpu(8750h) usage is 100%, do you think this is normal? thank you