Http binding post issue

Setup, Configuration and Use Beginners
1

Raspberry Pi 3 / openhabian 1.5 and OH2 2.4 stable.

I am trying to realize a http POST and have read all threads here.
Unfortunately it did not help.
This is my item to activate and deactivate my alarm system (currently by execute commandline and curl).
I don’t use caching this in http.cfg (but tried this before as well)

"Alarmanlage [%s]" <siren> (G_jdbc) {http=">[ON:POST:http://root:xxx@192.168.178.24:8060/setMode.cgi?Mode=Set] >[OFF:POST:http://root:xxx@192.168.178.24:8060/setMode.cgi?Mode=Unset]"}

I have tried also Basic authentication with a generated key.
Furthermore it work with requesting the state of the alarm system:
String Abus_Status "Abus State [%s]" (G_jdbc) {http="<[cache-Abus-Status:20000:REGEX(Mode=(.*))]" }

where http.cfg contains:

http:cache-Abus-Status.url=http://root:xxx@192.168.178.24:8060/getMode.cgi
http:cache-Abus-Status.updateInterval=20000

The log shows:
2019-08-22 13:08:52.102 [DEBUG] [ab.binding.http.internal.HttpBinding] - Executing url 'http://root:xxx@192.168.178.24:8060/setMode.cgi?Mode=Set' via method POST

But it does not work…

2

Does your mystery alarm system require any content for the POST?
Is there no security or password for this?

You may get more feedback using the HTTP action in a rule, while investigating.

rule "test http"
when
   testSwitch received command
then
   var results = sendHttpPostRequest("http://root:xxx@192.168.178.24:8060/setMode.cgi?Mode=Set")
   logInfo("httptest", "result " + results.toString)
end

I think that’ll work, defaulting the content type etc.

3

curl with the exact same command does the job (user:password@…)
However, I have time out issues every now and then with executeCommandLine curl + timeout period.
So I would like to move as many as possible to the http binding.

Would this help as well in this regard (timeout)?

I will try your suggestion.

4

No idea, it’s a diagnostic move. But you can add timeout to your parameters and handle it in a rule. I belive the return is null for a timeout.

If you were getting timeouts using curl, they’ll still happen with an Item/binding setup but be hidden from you.

5

Thanks, let’s see.

I am concerned about the timeouts because according to other posts, this might lead to cron rules not working anymore.
This is the original issue I face every now and then.

6

That’s really weird.

This does not work:
var results = sendHttpPostRequest("http://root:password@192.168.178.24:8060/setMode.cgi?Mode=Set", 3000)
2019-08-22 15:30:23.008 [INFO ] [ipse.smarthome.model.script.httptest] - result ERROR

but this does switch the state correctly:
executeCommandLine("curl -s http://root:password@192.168.178.24:8060/setMode.cgi?Mode=Set", 3000)

7

That’s moving forward, a message :smiley:

You may need to url encode the @ as %40 and then escape the % i.e. use %%40

Hmm, no, other people use @ as it is.
See also

8

You might need to default the POST content to get your timeout parameter “in teh right place”

sendHttpPostRequest("http://root:password@192.168.178.24:8060/setMode.cgi?Mode=Set", , , 3000)
9

I am not sure what you mean, but this does not work (rule not loaded):

2019-08-22 16:11:24.468 [WARN ] [el.core.internal.ModelRepositoryImpl] - Configuration model 'abus.rules' has errors, therefore ignoring it: [36,108]: no viable alternative at input ','
[36,110]: no viable alternative at input ','
[46,106]: no viable alternative at input ','
[46,108]: no viable alternative at input ','
10

That curl operation sends a GET request, not POST, are you sure you need to use POST?

1 Like
11

Really? :thinking:
I will try the GET then instead.

Thanks - I will let you know.

12

@NCO

Correct!! I’ve imported your curl command into my tool called “HTTP Shortcuts” (available in Google Play Store) and it told me it’s a GET.

With this tool you can test all kind of http operations (GET, PUT, POST), also import from or export to curl is possible.

13

Excellent - thanks for your help.

That di the trick!
sendHttpGetRequest("http://root:... works

Again, thanks a lot for this hint.

1 Like