# \[ANNOUNCE\] node-red-contrib-sub-link

**URL:** <https://discourse.nodered.org/t/announce-node-red-contrib-sub-link/43157>\
**Category:** Share Your Nodes\
**Created:** [25 March 2021 00:36 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-sub-link/43157 "2021-03-25T00:36:42Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![drmibell](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/drmibell/32/8424_2.png) [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Post date:** [27 March 2021 22:29 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-sub-link/43157/20 "2021-03-27T22:29:12Z")

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> [@Soloam](#):
>
> I've tried too look at the link nodes to understand how it makes the visual connection between the nodes, but still need more analyses! Probably I'll need some help from the developers too get that (and even if it's possible to do on nodes that are not core)

As far as can remember from earlier [discussions](https://discourse.nodered.org/t/examples-that-publish-subscribe-mqtt/7320/13) (also [here](https://discourse.nodered.org/t/custom-nodes-to-inherit-linking-from-link-in-link-out-nodes/33061/3)), the mechanism used by core nodes (`link`, `status`, `catch`, and `complete`) is not available to contributed nodes. This is not likely to change, since the message-passing mechanism is both deeply embedded in the core code and likely to evolve to handle distributed implementations of NR and messaging between different instances of NR and different hosts.

> [@Soloam](#):
>
> The ability to simulate broadcast for me is one! I must say that I have all my node red configuration based on this!

Simulating broadcast is clearly a reach for NR. It is contrary to the concept of sending messages on wires, which is the foundation of the tool. A [flow-based](https://nodered.org/about/) programming model may not be the right answer for applications where broadcast predominates and a pub/sub architecture might be preferable.

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_[View the full topic](https://discourse.nodered.org/t/announce-node-red-contrib-sub-link/43157)._