On Wed, Apr 1, 2015 at 2:15 AM, krishna g <[email protected]> wrote:
> import paho.mqtt.client as mqtt
> print("hello")
> mqttc = mqtt.Client("python_pub")
> mqttc.connect("test.mosquitto.org", 1883)
> mqttc.publish("hello/krishna", "temp =28")
> mqttc.loop(2) #timeout = 2s
>
What problems are you having? Does this code work in your development
environment?
I skimmed the code for Paho ( download link here
<http://git.eclipse.org/c/paho/org.eclipse.paho.mqtt.python.git/commit/> )
and it looks like it uses threads to listen for messages. Due to the way App
Engine works and your module type
<https://cloud.google.com/appengine/docs/python/modules/#Python_Instance_scaling_and_class>,
you may not be able to use threads (and therefore this library) in your
application. It also looks like this library attempts to bind a listener
socket, which is not allowed by the Sockets service:
https://cloud.google.com/appengine/docs/python/sockets/
The best alternative would be to run this within a Managed VM service, or
set it up within a Compute Engine (GCE) VM and build your own way to
communicate from your app to the GCE box.
-----------------
-Vinny P
Technology & Media Consultant
Chicago, IL
App Engine Code Samples: http://www.learntogoogleit.com
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