# Force streaming RTSP via UDP or TCP

**URL:** https://community.wowza.com/t/force-streaming-rtsp-via-udp-or-tcp/35218
**Category:** Wowza Streaming Engine
**Created:** [September 20, 2010, 10:44am UTC](https://community.wowza.com/t/force-streaming-rtsp-via-udp-or-tcp/35218 "2010-09-20T10:44:41Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Sascha\_Noesberger](https://avatars.discourse-cdn.com/v4/letter/s/e79b87/32.png) [@Sascha\_Noesberger](https://community.wowza.com/u/Sascha_Noesberger)
#### Post date: [September 20, 2010, 10:44am UTC](https://community.wowza.com/t/force-streaming-rtsp-via-udp-or-tcp/35218/1 "2010-09-20T10:44:41Z")

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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?

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### Author: ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)
#### Post date: [September 20, 2010, 3:21am UTC](https://community.wowza.com/t/force-streaming-rtsp-via-udp-or-tcp/35218/2 "2010-09-20T03:21:40Z")

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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