Re: [Discuss-gnuradio] issue about message port of grextras

[Tom Rondeau]

On Tue, Apr 22, 2014 at 5:09 AM, Damon <address@hidden> wrote:

Hi all,

Recently I am learning the grextras project. I am confused about the
message port which is designed in grextras.
Why will we not get a error when the message ports do not connect to
other message ports? I thought those port actually is data stream ports,
so they should be connected to other ports.

Best regards,
Damon

Damon,

grextras is an external project from GNU Radio and not related to the core functionality.

But GNU Radio's message passing structure does not require connections. It's a publish-subscribe model, and a block will publish a message regardless of whether or not another block is subscribed and listening.

Tom