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Hi all,

I have created a python web app to control my zwave devices through the Razberry. It works but I noticed that the calls to the REST API take much longer (4 to 5 seconds) than when entered directly into the browser (instant). Note that in both cases the identical command is issued.
I observe the same behavior for /ZWaveAPI/Run/ and /ZWaveAPI/Data commands.
I have also tried the Requests library but have the same problems.

My impression is that it is the connection that takes a long time to complete and not the actual reading of the data.

Example program:

import urllib2
urllib2.urlopen('http://picam02.local:8083/ZWaveAPI/Run/ ... 37].Set(0)')

Entering the same command in Safari yields instant response (the switch turns off).
Doing a read of an external site works flawlessly: urllib2.urlopen('http://www.apple.com').read() is very quick (and includes reading the data).

Any ideas anyone?

Marcel

Try to sniff packet flow and see what happens.

I'm afraid that's beyond my expertise. Any pointers on how to proceed with that (on OSX)?

I was using Bonjour/Avahi naming like "picam02.local" instead of a fixed IP address for my raspberry pi. This works fine usually. But with access to the Razberry it made the requests take about 5 secs instead of about 0.2 secs!
I don't know why when accessing the razberry through Safari this is not an issue I don't understand. Maybe Safari caches the IP address?