Force streaming RTSP via UDP or TCP

Hello

We are using our Wowza server to stream some live feed via RTSP. Now I found out, that not always the same transport protocol is used.

The other day I was in our data center where I was directly connected on the same network as the Wowza server. If looked at the network traffic with Wireshark, I saw that the streaming was done via UDP.

Now at my office, I connected again to the server (via a different network). This time the streaming is done via TCP.

What are the reasons for this behavior of the Wowza server? Is there a possibilty to force the server to use either udp or tcp?

Most players will try to stream using RTP over UDP if that does not work (UDP packets are blocked) then it will switch to RTSP/RTP interleaved (RTP over TCP RTSP session).

Charlie