# Re: bidirectional with Socket PDU

**URL:** <https://www.ruby-forum.com/t/re-bidirectional-with-socket-pdu/242998>\
**Category:** GNU Radio\
**Created:** [August 13, 2015, 11:04pm UTC](https://www.ruby-forum.com/t/re-bidirectional-with-socket-pdu/242998 "2015-08-13T23:04:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [August 13, 2015, 11:04pm UTC](https://www.ruby-forum.com/t/re-bidirectional-with-socket-pdu/242998/1 "2015-08-13T23:04:11Z")

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> OK, maybe it is an issue with netcat then. I don’t think one netcat  
> instance can both transmit and receive, so when I try to run it twice,  
> that is when it dies. I will have to look for another app that can do  
> something similar for testing purposes. Thanks Tim.

If someone has an alternative, I am all ears (I’m coming up empty).