TCP mode SAT>IP

[Retrofan]

Hi,

 

The latest beta of the DVBViewer Media Server has a nice option to switch between UDP and TCP mode for SAT>IP.

However, does the AVM Fritz!Box 6690 Cable also support the TCP mode?

Is there a way to check if the hardware does support it? If TCP mode isn't available, it switches back to UDP mode, however, it's not visible for the user.

If TCP isn't available right now, we have to ask AVM to implement this.

[Griga]

If the Sat>IP server does not support TCP interleaved transport mode, it is supposed to respond with a "461 Unsupported Transport" (or similar) error to the SETUP command. In debug mode (see Windows start menu -> DVBViewer) DVBViewer writes the error message to the DVBViewer.log (see configuration folder) before falling back to UDP mode.

 

I'm not yet sure about the best way to handle it in DVBViewer. Fall silently back to UDP, as it is done now? Display the error in the UI with/without falling back to UDP mode? What do you think?

 

4 hours ago, Retrofan said:

If TCP isn't available right now, we have to ask AVM to implement this.

 

One of the main reasons for using TCP interleaved transport mode (dropout prevention) doesn't seem to be so relevant in case of a Fritz!Box Cable as Sat>IP server. It has full control over the switch to which other network components are connected and can use QoS mechanisms (Quality of Service) to prioritise its own UDP streams, which makes dropouts less likely. In contrast to other Sat>IP servers, I have seen no complaints from Fritz!Box Cable users about dropouts in this forum up to now.

 

[Retrofan]

With the TCP mode turned on I don't have dropouts anymore as with UDP mode earlier. Probably the problem was my Intel NIC in my Dell computer.

So, this is a nice addition.

 

Fall silently back to UDP is fine if the setting is set back from TCP to UDP.

Or indeed show an error dialog as well.

[Griga]

3 minutes ago, Retrofan said:

With the TCP mode turned on I don't have dropouts anymore as with UDP mode earlier.

 

So the Fritz!Box indeed supports this mode? I didn't expect that.

 

[Retrofan]

Probably! Tomorrow, I will check the debug logs as well.

[Retrofan]

23 hours ago, Griga said:

 

So the Fritz!Box indeed supports this mode? I didn't expect that.

 

 

See attached file. I don't see an error in the log, so all good I guess. 🙂

 

DVBViewer.log

Edited Monday at 04:17 PM by Retrofan

[Griga]

21 minutes ago, Retrofan said:

I don't see an error in the log

 

I can't either. So if the DVB -C RTSP Network Device 1 ic correctly configured for TCP interleaved mode, your Fritzbox Cable supports it.

 

Nevertheless it's strange, because the few information that I can find in the web about this matter rather suggests that the Fritzbox does not support it. However, all these discussions took place two or more years ago...