CherryPy exits after a couple of minutes

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clay...@gmail.com

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Jun 1, 2015, 1:02:27 AM6/1/15

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I'm running on a Raspberry Pi with raspbian. Connected to local lan via wifi using a static ip. The app I'm running is the simplest one shown on the cherrypy web site except that I added a config item to use the actual ip address of the pi. Here is the whole app:

import cherrypy

class HelloWorld(object):

@cherrypy.expose

def index(self):

return "Hello world!"

if __name__ == '__main__':

conf = {

'global' : {

'server.socket_host': '10.0.0.120',

'server.socket_port': 80,

}

cherrypy.quickstart(HelloWorld(), '/', conf)

CherryPi starts fine and responds to requests but even if I just leave it alone, it exits after a couple of minutes with the following output:

[31/May/2015:21:26:37] ENGINE Error in 'start' listener <bound method Server.start of <cherrypy._cpserver.Server object at 0x76fd50>>

Traceback (most recent call last):

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/wspbus.py", line 205, in publish

output.append(listener(*args, **kwargs))

File "/usr/local/lib/python2.7/dist-packages/cherrypy/_cpserver.py", line 168, in start

ServerAdapter.start(self)

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/servers.py", line 177, in start

self.wait()

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/servers.py", line 233, in wait

wait_for_occupied_port(host, port)

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/servers.py", line 459, in wait_for_occupied_port

raise IOError("Port %r not bound on %r" % (port, host))

IOError: Port 80 not bound on '10.0.0.120'

[31/May/2015:21:26:37] ENGINE Shutting down due to error in start listener:

Traceback (most recent call last):

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/wspbus.py", line 243, in start

self.publish('start')

File "/usr/local/lib/python2.7/dist-packages/cherrypy/process/wspbus.py", line 223, in publish

raise exc

ChannelFailures: IOError("Port 80 not bound on '10.0.0.120'",)

[31/May/2015:21:26:37] ENGINE Bus STOPPING

[31/May/2015:21:26:37] ENGINE HTTP Server cherrypy._cpwsgi_server.CPWSGIServer(('10.0.0.120', 80)) already shut down

[31/May/2015:21:26:37] ENGINE Stopped thread 'Autoreloader'.

[31/May/2015:21:26:37] ENGINE Stopped thread '_TimeoutMonitor'.

[31/May/2015:21:26:37] ENGINE Bus STOPPED

[31/May/2015:21:26:37] ENGINE Bus EXITING

[31/May/2015:21:26:37] ENGINE Bus EXITED

Sylvain Hellegouarch

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Jun 1, 2015, 3:02:20 AM6/1/15

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Hi there,

You should check two things:

* no other process is listening on port 80 already (Apache, nginx?)

* you have the right permissions to bind to that reserved port.

For instance on my machine:

$ sudo netstat -tupln | grep 80

tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1354/nginx

tcp6 0 0 :::80 :::* LISTEN 1354/nginx

- Sylvain

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