# Ignore same message within 5 seconds

**URL:** <https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274>\
**Category:** General\
**Created:** [5 April 2020 15:22 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274 "2020-04-05T15:22:50Z")\
**Posts on this page:** 18\
**Page:** 1

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [5 April 2020 15:22 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/1 "2020-04-05T15:22:50Z")

</div>

I'm trying to come up with a method of ignoring short term duplicate messages

But this little idea doesn't quite seem to work in the way I want it to  
i.e use RBE to block repeats but reset it 5 secs after a message comes thru

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/4/f4a633aa8f52c91ef68667759e4c50c5c73ab743.png)

```auto
[{"id":"5c4fbe47.40f5","type":"inject","z":"e1dfe9ca.bed568","name":"","topic":"","payload":"test","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":386,"y":462,"wires":[["3b5085e4.3a795a"]]},{"id":"3b5085e4.3a795a","type":"rbe","z":"e1dfe9ca.bed568","name":"","func":"rbe","gap":"","start":"","inout":"out","property":"payload","x":578,"y":462,"wires":[["c601b096.43ef6","5bfec0f9.8927c"]]},{"id":"c601b096.43ef6","type":"trigger","z":"e1dfe9ca.bed568","op1":"","op2":"true","op1type":"pay","op2type":"bool","duration":"5","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":742,"y":462,"wires":[["ff2d4a2d.9208c8"]]},{"id":"5bfec0f9.8927c","type":"debug","z":"e1dfe9ca.bed568","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":814,"y":396,"wires":[]},{"id":"ff2d4a2d.9208c8","type":"change","z":"e1dfe9ca.bed568","name":"","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"reset","pt":"msg","to":"true","tot":"bool"}],"action":"","property":"","from":"","to":"","reg":false,"x":894,"y":462,"wires":[["3b5085e4.3a795a"]]}]

```

If I press inject 3 times quickly - 1st msg goes thru and others are ignored 🙂  
But at end of trigger timeout - another one of the messages appears ☹

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [5 April 2020 15:29 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/2 "2020-04-05T15:29:37Z")

</div>

PS Although I'd like to know why my idea isn't working properly - all other suggestions welcomed as to how to the job in a different way

[edit]

I've just realised that I'm re-inventing the delay node rate limiting and discarding intermediate messages option aren't I #LOL 😆

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/0/e06caa07633946bb13f4bdb929b484c2587b7651.png)

---

<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [5 April 2020 15:45 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/3 "2020-04-05T15:45:08Z")

</div>

> [@cymplecy](#):
>
> I've just realised that I'm re-inventing the delay node rate limiting

Yep 😃 😃 😃

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [6 April 2020 00:06 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/4 "2020-04-06T00:06:10Z")

</div>

_I know you have found a solution, but for the sake of learning....._

From my recent post about "message repeat speeds" I was pointed to this:

[Could this be interesting?](https://flows.nodered.org/flow/9410e4cebcc4b68fae73)

---

<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [6 April 2020 06:55 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/5 "2020-04-06T06:55:21Z")

</div>

That was a solution created 6 years ago (before that rate limit capability was built into the delay node)

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [6 April 2020 07:06 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/6 "2020-04-06T07:06:38Z")

</div>

Ooops.

Sorry. I was just sharing something I thought could be useful.

---

<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [6 April 2020 07:14 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/7 "2020-04-06T07:14:41Z")

</div>

No worries, it was useful back then, and is interesting from a historical perspective 🙂

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [6 April 2020 07:22 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/8 "2020-04-06T07:22:51Z")

</div>

But still interested if anyone can explain why my flow doesn't do the same job properly

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [6 April 2020 08:30 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/9 "2020-04-06T08:30:59Z")

</div>

I'll look at the flow soon, but before I do I was just wanting to check I am up to speed with what it is you want to do / have the flow do / see.

**I think** I can see the problem!

The `trigger` node.

It is set so:

```auto
[{"id":"f19fc18.be60d4","type":"trigger","z":"b4f1ccd4.5e8d1","op1":"","op2":"true","op1type":"pay","op2type":"str","duration":"5","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":566,"y":1260,"wires":[["8649549c.f4d508","1f7fbfd4.050dd8"]]}]

```

So, it sends the original message, waits 5 seconds then sends a `reset` message.

Try it like this:

```auto
[{"id":"f19fc18.be60d4","type":"trigger","z":"b4f1ccd4.5e8d1","op1":"","op2":"true","op1type":"nul","op2type":"str","duration":"5","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":566,"y":1260,"wires":[["8649549c.f4d508","1f7fbfd4.050dd8"]]}]

```

I can't promise it is the solution.

Alas even this machine's Node-Red is slow (but 200+ tabs open, you have to expect things to slow down) but the tabs for (with) Node-Red are really loading the processor.  
So there is another problem.

But sorry, I am getting off topic.

But I think what I did with the `trigger` node helps with the problem.

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [6 April 2020 10:38 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/10 "2020-04-06T10:38:16Z")

</div>

@cymplecy Simon here is my take on your flow

When you press the inject and msg is sent with a payload of 'test'

- the msg enters the `rbe` node which stores the payload and sends the msg on
- since there was no previous msg (the payload has changed)
- the msg goes to `debug` and shows up
- the msg also goes to the `trigger` node which sends the msg on (first time)
- the msg goes to the `change` node where the payload is removed from msg and msg.reset is set to `true`
- the msg is sent back to the `rbe` node
- Since msg.reset is `true`, it clears the stored msg.payload.
- the msg is sent on to the `debug` (shows up in debug list) and to the `trigger` node

Here is where the `gotcha` comes in. The msg now has msg.reset set to `true`, so when it gets to the `trigger` node

> reset
> 
> If a message is received with this property, any timeout or repeat currently in progress will be cleared and no message triggered.

and everything stops.

If you add a `change` node (set to delete msg.reset) between the `rbe` and `trigger` node I think it will work the way you want.

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [6 April 2020 11:58 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/11 "2020-04-06T11:58:44Z")

</div>

> [@zenofmud](#):
>
> If you add a `change` node (set to delete msg.reset) between the `rbe` and `trigger` node I think it will work the way you want.

That didn't make any difference

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [6 April 2020 12:06 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/12 "2020-04-06T12:06:42Z")

</div>

Yes it does, but the second msg sent from the trigger ends up with reset = true so it never gets thru the `rbe` again.

Here is your flow with the change and an extra debug.

````auto
[{"id":"c0e62e53.8a175","type":"inject","z":"a48607a.1581178","name":"","topic":"","payload":"test","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":180,"wires":[["951b2c1.e7e0ad"]]},{"id":"951b2c1.e7e0ad","type":"rbe","z":"a48607a.1581178","name":"","func":"rbe","gap":"","start":"","inout":"out","property":"payload","x":302,"y":180,"wires":[["7a33cf5f.3a5048","1c9d9ff4.4eba18"]]},{"id":"23f644f4.741c4c","type":"trigger","z":"a48607a.1581178","op1":"","op2":"true","op1type":"pay","op2type":"bool","duration":"5","extend":false,"units":"s","reset":"","bytopic":"all","name":"","x":280,"y":340,"wires":[["c6f210a8.bdc7a"]]},{"id":"7a33cf5f.3a5048","type":"debug","z":"a48607a.1581178","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":538,"y":114,"wires":[]},{"id":"c6f210a8.bdc7a","type":"change","z":"a48607a.1581178","name":"","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"reset","pt":"msg","to":"true","tot":"bool"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":340,"wires":[["951b2c1.e7e0ad","7f66138.9cd916c"]]},{"id":"1c9d9ff4.4eba18","type":"change","z":"a48607a.1581178","name":"","rules":[{"t":"delete","p":"reset","pt":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":290,"y":280,"wires":[["23f644f4.741c4c"]]},{"id":"7f66138.9cd916c","type":"debug","z":"a48607a.1581178","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":670,"y":340,"wires":[]}]```
````

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [6 April 2020 12:14 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/13 "2020-04-06T12:14:18Z")

</div>

Your flow doesn't work for me - you seem to have changed the way the trigger node is configured  
[edit] ignore the bit about trigger node change [/edit]

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [6 April 2020 12:34 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/14 "2020-04-06T12:34:00Z")

</div>

Only thing I did was to add the change node and debug node. Here is what it looks like after the initial click of the `inject` node:

 ![Screen Shot 2020-04-06 at 8.30.01 AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/8/e822b3db2ad777eedbdd48a3f1dc92176f46752b.png)  
NOTE: I moved the nodes to make it easier to take the screen shot

You can see the blue dot under the trigger node. After 5 seconds you see the other msg and the blue dot is off:

 ![Screen Shot 2020-04-06 at 8.30.09 AM](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/c/7c09a7f983372a18bf8f97498fe5a7a8b99f8b55.png)

What versions of NR, node.js and what platform? I tried it on a Pi and on my mac and get the same results (both using NR v1.0.4)

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [6 April 2020 13:03 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/15 "2020-04-06T13:03:57Z")

</div>

I'm just have a mare of a day here 🙂

Just ignore me 🙂

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [6 April 2020 13:23 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/17 "2020-04-06T13:23:43Z")

</div>

I've altered my trigger node to do WHAT I THOUGHT I'D TOLD IT TO DO IN THE FIRST PLACE!!!!!!

Did I mention that I was having a mare! 🙂

This is what I thought i'd set it to and now it works perfectly of course 🙂

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/e/be2a25e6298087fe406a99bb657282a6bdcf6c4b.jpeg)

Thanks for sticking with me Paul and forcing me to find out what I'd done wrong 🙂

---

<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [6 April 2020 20:57 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/18 "2020-04-06T20:57:10Z")

</div>

Wasn't that me who mentioned setting the `trigger` node to send nothing?

I'll chirp in and give you my rundown on what was happening:  
(It was late and while I was sleeping I saw the problem.  
I didn't think it was worth getting up and posting then.)

Overview:

- There will be 3 messages coming in.

The first message comes in.  
The `RBE` allows it to pass.  
It is sent to the `debug` node and the `trigger` node.  
The `trigger` node on-sends the original message to `change` node, and starts a 5 second count down.  
In the mean time: messages 2 and 3 arrive.  
They are filtered by the `RBE` node.  
(Back to the other part)  
If it is **more** than 5 seconds for the messages to arrive.......  
{  
The `trigger` will have sent a `reset` message to reset the `RBE` node.  
The _second_ (or third) message arrives. (Though probably third in your case)  
The `RBE` node will allow it to pass because it has been reset.  
}  
**or**  
Going back to the second message message:  
The `trigger` node has just sent the `reset` command and the `RBE` node will allow messages to pass.  
The second message arrives - the `RBE` has been reset from the message sent from the `trigger` node.  
The **second** message is passed.  
The `trigger` node again sends the original message and waits 5 seconds to send the `reset` command.  
And so the problem can repeat for the third message.

---

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [5 June 2020 20:57 UTC](https://discourse.nodered.org/t/ignore-same-message-within-5-seconds/24274/19 "2020-06-05T20:57:32Z")

</div>

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