Re: [Discuss-gnuradio] Transmit stream tags via socket

Hello all,

as promised my experiences: Using ZeroMQ works really cool and out of the box. So good that I dropped the option proposed by Kevin (sorry).

I share some (now somewhat trivial) notes, if somebody else (with equally few experience) wants to try:
* On Ubuntu you have to install libzmqpp-dev (and dependencies) and then re-cmake and re-build GR, as Marcus pointed out.
* The address field does not resolve domain names
* REQ = Client, REP = Server
* your port number must larger 1024 (<1024 are root use only ports)
* Due to Ubuntus firewall settings (iptables) incoming connections are blocks => the IP address of REP(Server) must be the IP in the address field.

Thanks to Marcus and Kevin again.

Mit freundlichen Grüßen / Best regards

Stephan Ludwig

Robert Bosch GmbH
Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4)
Renningen
70465 Stuttgart
GERMANY
www.bosch.com

Tel. +49(711)811-8809
Fax +49(711)811-1052
Mobile +49(172)5630639
Stephan.Ludwig2@de.bosch.com

Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000;
Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner,
Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Markus Heyn, Dr. Dirk Hoheisel,
Christoph Kübel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller



-----Ursprüngliche Nachricht-----
Von: discuss-gnuradio-bounces+stephan.ludwig2=de.bosch.com@gnu.org [mailto:discuss-gnuradio-bounces+stephan.ludwig2=de.bosch.com@gnu.org] Im Auftrag von Ludwig Stephan (CR/AEH4)
Gesendet: Freitag, 26. Juni 2015 11:13
An: discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] Transmit stream tags via socket

Hello Marcus,
hello Kevin,

thank you for your hints. Meanwhile I also recognized pmt::serialize, which I found awesome. And Marcus pointing to ZeroMQ was even better. I will try both and report back.

Mit freundlichen Grüßen / Best regards

Stephan Ludwig

Robert Bosch GmbH
Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen
70465 Stuttgart
GERMANY
www.bosch.com

Tel. +49(711)811-8809
Fax +49(711)811-1052
Mobile +49(172)5630639
Stephan.Ludwig2@de.bosch.com

Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Markus Heyn, Dr. Dirk Hoheisel, Christoph Kübel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller



-----Ursprüngliche Nachricht-----
Von: discuss-gnuradio-bounces+stephan.ludwig2=de.bosch.com@gnu.org [mailto:discuss-gnuradio-bounces+stephan.ludwig2=de.bosch.com@gnu.org] Im Auftrag von Marcus Müller
Gesendet: Freitag, 26. Juni 2015 10:11
An: discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] Transmit stream tags via socket

Hi Stephan,

have a look at the ZeroMQ blocks (ZeroMQ, including the ZeroMQ C++ wrapper header will need to be present at compilation time); The ZeroMQ sinks have the option to pass along tags!
ZeroMQ is a world of its own; if you want a single point-to-point connection, try the REP sink and the REQ source, with an address like tcp://<ip address of your computer>:5555 in both.
If you want a publisher/multi-subscriber thing, have a look at the pub/sub combination. There's examples, typically in /usr/share/gnuradio/examples/zeromq

Best regards,
Marcus


On 06/26/2015 07:20 AM, Ludwig Stephan (CR/AEH4) wrote:
> Hello list,
>
> I kindly ask for an idea how to transmit a pmt::cons via a tcp (or udp) connection? Alternatively I want to transmit tagged streams including the tags. In my special case, the tag in question is an integer, if that helps.
>
> I checked so far:
> * TCP Sink/Source uses file descriptor sink, which does not "save" tags
> * socket PDU, but this only takes the cdr part of the cons
>
> I could imagine that this is a bit tricky as writing tagged streams to files is tricky, either. Hence I am asking for suggestions, how to implement this.
>
> Best regards
>
> Stephan Ludwig
>
> Robert Bosch GmbH
> Corporate Sector Research & Advance Engineering, Communication
> Technology (CR/AEH4) Renningen
> 70465 Stuttgart
> GERMANY
> www.bosch.com
>
> Tel. +49(711)811-8809
> Fax +49(711)811-1052
> Mobile +49(172)5630639
> Stephan.Ludwig2@de.bosch.com
>
> Registered Office: Stuttgart, Registration Court: Amtsgericht
> Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz
> Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan
> Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Markus
> Heyn, Dr. Dirk Hoheisel, Christoph Kübel, Uwe Raschke, Dr. Werner
> Struth, Peter Tyroller
>
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio


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