# Transmit stream tags via socket **URL:** \ **Category:** GNU Radio\ **Created:** [June 26, 2015, 7:30am UTC](https://www.ruby-forum.com/t/transmit-stream-tags-via-socket/242475 "2015-06-26T07:30:21Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Post date:** [June 26, 2015, 7:30am UTC](https://www.ruby-forum.com/t/transmit-stream-tags-via-socket/242475/1 "2015-06-26T07:30:21Z")
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 > **[Want to know how to live #LikeABosch?](https://www.bosch.com/)** > > Moving stories and inspiring interviews. Experience the meaning of "invented for life" by Bosch completely new. Visit our international website. Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 removed\_email\_address@domain.invalid 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 Kbel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [June 26, 2015, 10:12am UTC](https://www.ruby-forum.com/t/transmit-stream-tags-via-socket/242475/2 "2015-06-26T10:12:45Z")
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://: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 ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [June 26, 2015, 11:14am UTC](https://www.ruby-forum.com/t/transmit-stream-tags-via-socket/242475/3 "2015-06-26T11:14:05Z")
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 Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY > **[Want to know how to live #LikeABosch?](https://www.bosch.com/)** > > Moving stories and inspiring interviews. Experience the meaning of "invented for life" by Bosch completely new. Visit our international website. Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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 Kbel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller -----Ursprngliche Nachricht----- Von: [discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid) [[mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid)] Im Auftrag von Marcus M. Gesendet: Freitag, 26. Juni 2015 10:11 An: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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://: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: > Best regards > Tel. +49(711)811-8809 > > * * * > > Discuss-gnuradio mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) * * * Discuss-gnuradio mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > **[Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)** ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [June 26, 2015, 1:48pm UTC](https://www.ruby-forum.com/t/transmit-stream-tags-via-socket/242475/4 "2015-06-26T13:48:54Z")
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 Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY > **[Want to know how to live #LikeABosch?](https://www.bosch.com/)** > > Moving stories and inspiring interviews. Experience the meaning of "invented for life" by Bosch completely new. Visit our international website. Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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 Kbel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller -----Ursprngliche Nachricht----- Von: [discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid) [[mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid)] Im Auftrag von Ludwig Stephan (CR/AEH4) Gesendet: Freitag, 26. Juni 2015 11:13 An: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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 Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY > **[Want to know how to live #LikeABosch?](https://www.bosch.com/)** > > Moving stories and inspiring interviews. Experience the meaning of "invented for life" by Bosch completely new. Visit our international website. Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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 Kbel, Uwe Raschke, Dr. Werner Struth, Peter Tyroller -----Ursprngliche Nachricht----- Von: [discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid) [[mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid)] Im Auftrag von Marcus M. Gesendet: Freitag, 26. Juni 2015 10:11 An: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) 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://: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: > Best regards > Tel. +49(711)811-8809 > > * * * > > Discuss-gnuradio mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) * * * Discuss-gnuradio mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > **[Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)** * * * Discuss-gnuradio mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > **[Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)**