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
>
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