[Solved] HTTP binding post problem

Add-ons Bindings
#1

Dear all,

first of all Happy New Year to all of you in the OH world and thanks for your never ending support!

Now to my problem…
I am on openHAB 2.5.0-1 (Release Build)

I have created an HTTP item in /items/http.items via the command:
Switch Leselampe “Leselampe” (gEG_Wohnzimmer,gHaus) [ “Switchable”] { http=">[ON:POST:http://192.168.229.37/control?cmd=event,s20_2_on] >[OFF:POST:http://192.168.229.37/control?cmd=event,s20_2_off]" }

It works fine when using google chrome and just posting the event directly to the device.
But when I try to activate (push) that switch via OH, it does not work at all.
I have tried it via the REST API and also via normal switch which I have created in the sitemap:

[start Muldeweg.sitemap]
sitemap Muldeweg label=“Muldeweg” {

Frame label="Lichtsteuerung" {
        Default item=Leselampe label="Leselampe" 
} // END Frame Lichtsteuerung

} // END Sitemap Muldeweg

[end Muldeweg.sitemap]

I get this in /var/log/openhab2/events.log when activating the switch:
2020-01-02 09:09:50.701 [ome.event.ItemCommandEvent] - Item ‘Leselampe’ received command ON

I am not able to determine the root cause.
I have had it already working until I have upgraded from openHAB 2.5.0~S1660-1 to my current release.

From time to time I keep getting this error in the log, but I am not able to link this one to my actual problem (/var/log/openhab2/openhab.log):
2020-01-02 08:59:22.490 [ERROR] [org.openhab.io.net.http.HttpUtil ] - Fatal transport error: java.net.ConnectException: Connection timed out (Connection timed out)

Perhaps somebody of you is able to help and to give me some advice how to analyse further.

Many thanks in advance!

BR
Lars

#2

This the http v1 binding
You need to enable legacy bindings in the paperUI and then install the v1 binding

#3

Hi vzorglub,

Thanks for your quick response.
This has already been activated.
I am using http binding 1 1.14.

What else could I check?

BR
Lars

#4

Your http.cfg file, please

#5

[Beginn of http.cfg:]

timeout in milliseconds for the http requests (optional, defaults to 5000)

#timeout=

the interval in milliseconds when to find new refresh candidates

(optional, defaults to 1000)

#granularity=

whether to substitute the current time or state value into the URL

(optional, defaults to true)

#format=

configuration of the first cache item

#.url=
#.updateInterval=

configuration of the second cache item

#.url=
#.updateInterval=
[end of http.cfg]

Thanks for your help.

BR
Lars

#6

Increase the timeout, see what happens

#7

Hi all,

I have chaged the timeout to 50000.
But it has not changed anything.

When switching the item I get:
2020-01-08 07:37:37.199 [ome.event.ItemCommandEvent] - Item ‘Leselampe’ received command ON

2020-01-08 07:37:52.301 [ome.event.ItemCommandEvent] - Item ‘Leselampe’ received command OFF

But nothing is happening on the device.

Is there any way to test the http command directly from the karaf console?
(http://192.168.229.37/control?cmd=event,s20_2_on)

BR
Lars

#8

Hi,

I have created an own log for the http binding and found only the following entries:

[08:32:10] openhabian@openHABianPi:/var/log/openhab2$ cat http.log | grep Exec
08-Jan-2020 08:21:18.582 [DEBUG] [org.openhab.binding.http.internal.HttpBinding ] - Executing url ‘http://192.168.229.37/control?cmd=event,s20_2_off’ via method POST
08-Jan-2020 08:30:11.521 [DEBUG] [org.openhab.binding.http.internal.HttpBinding ] - Executing url ‘http://192.168.229.37/control?cmd=event,s20_2_on’ via method POST

No additional suspicious entries around.
Would anybody have some ideas how to further analyse this problem?
Is there a way to log the result of the executiion of the POST command?

BR
Lars

#9

The binding doesn’t do anything with the result. If I get time later, I could add some additional debug output to let you see it.

#10

You could also probably get a peek at the wire traffic by setting the log level to TRACE for these packages:

  • org.openhab.io.net.http
  • org.openhab.binding.http

Fair warning: this will generate a LOT of output.

#11

Hi,

many thanks for your help.

The root cause of my problem has been a freeze on one of my network devices.
Reboot has solved the problem.

thanks

BR
Lars