Use constant with ip address stored in node configuration (http request)

[nosfreatu]

Hi
I use following flow to control a music streamer by gpio button.

As I use more then one "http request node" and ther will come more, I would like to replace the IP Adress in "http request" node by a variable or constant. Best would be I could edit the adress in dashboard.

Is this possible and when yes how?

[Steve-Mcl]

@nosfreatu

Is this possible and when yes how?

Its in the built in help...

Basically, clear the node settings URL field, then pass it into the HTTP request via msg.url

[nosfreatu]

Thank. What I forgot to mention, my url looks like this

http://192.168.1.122:11000/Preset?id=2 and I only want to replace the bold section.

[Steve-Mcl]

you can make your msg.url whatever you want

e.g.

function node...

msg.url = "http://" + msg.ip + ":" + msg.port + "/Preset?id=2"
return msg.

Or

use a change node to contruct the URL

Or

the http-request node itself supports mustache syntax (again, its in the help) but to get you moving...
set the URL field to http://{{ip}}:{{port}}/Preset?id=2

NOTE: All of these examples assume the IP is in msg.ip and port is in msg.port

[nosfreatu]

Thanks

I did following for testing. But the msg.ip and msg.port are not defined in the other flows.
So I think i have to find a way to make them defined, what needs more to know about the node red
system, and some study from me.

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