HTTP-Request / RequestError: The "listener" argument must be of type function

General
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1

Hello,

I already searched the forum but the given answers do not match my problem.
When using the HTTP request node I also get the error:

RequestError: The "listener" argument must be of type function. Received an instance of Object

I already checked the agent-base by typing:

npm list agent-base

The result, as you can see, does not show a agent-base usage below version 6.

e1447ef04588:~$ npm list agent-base
node-red-docker@4.1.5 /usr/src/node-red
└─┬ node-red@4.1.5
  └─┬ @node-red/nodes@4.1.5
    └─┬ https-proxy-agent@5.0.1
      └── agent-base@6.0.2

Any ideas?

2

I assume you are referring to this post and thats why you are mentioning agent-base!

well, in that ^ case, it was a node package installed in the palette.

The dir you are scanning is not the userDir

This ^ is the main node-red app install - there will be node modules installed into your runtime in the package for the running node-red project. Often that is /data (or on non-docker, ~/.node-red)

Have a look at your start up log and look out for userDir (probably set to /data)
CD into that and do the same check

In fact, do npm ls and show us what you have in there.

3

Hi,

thank you - I wasn't aware that the base directory in which I run "npm list" is relevant.

Now, running it - as you recommended - in the "/data" directory I get:

node-red-project@0.0.1 /data
└─┬ node-red-contrib-mqtt-dynamicsub@0.0.9
  └─┬ https-proxy-agent@3.0.1
    └── agent-base@4.3.0

I deleted the two nodes from my project (hope to find an alternative node for dynamic MQTT input later). I restarted the container and the HTTP request works now.

Thank you very much!!!

4

The core mqtt node will now do dynamic subscription, though it depends on exactly what you need whether it does what you want.

5

We probably need something in NR core to alert this issue!

Or some way of flagging modules (and dependencies) as being problematic for certain versions of node-red?

Demo here using built in MQTT nodes

6

Note also, this package looks to be abandoned. This issue was raised in 2024: tool using old agent-base · Issue #2 · crowbarz/node-red-contrib-mqtt-dynamicsub · GitHub