用python编写的用于openshift的最小套接字服务器

Question

I would like to create a minimal socket server written in python that I can run with my OpenShift account. I searched more than a day, found lots of libraries(tornado, django, twisted, flask, autobahn, gevent) that could be used for this, but I could not manage to implement it for me. (Actually I do not really know the differences between these.) I looked for lots of tutorials as well, I found an implementation using Tornado:

import tornado.ioloop
import tornado.web
import tornado.websocket
import tornado.template

class MainHandler(tornado.web.RequestHandler):
  def get(self):
    loader = tornado.template.Loader(".")
    self.write('hello world')

class WSHandler(tornado.websocket.WebSocketHandler):
  def open(self):
    print 'connection opened...'
    self.write_message("The server says: 'Hello'. Connection was accepted.")

  def on_message(self, message):
    self.write_message("The server says: " + message + " back at you")
    print 'received:', message

  def on_close(self):
    print 'connection closed...'

application = tornado.web.Application([
  (r'/ws', WSHandler),
  (r'/', MainHandler),
  (r"/(.*)", tornado.web.StaticFileHandler, {"path": "./resources"}),
])

if __name__ == "__main__":
  application.listen(8000)
  tornado.ioloop.IOLoop.instance().start()

However I cannot connect to it from a simple html5 websocket client, furthermore I get 503 Service Temporarily Unavailable when I enter my domain.

Could you please either give me a minimal implementation (if possible using tornado, or maybe django) that works if upload it to OpenShift or link me a trustworthy and 100% reliable tutorial? I would be really pleased I can't get my head around this.

Answer 1

You cannot use port address on openshift like that, I suggest you to do this:

   ip   = os.environ['OPENSHIFT_PYTHON_IP']
   port = int(os.environ['OPENSHIFT_PYTHON_PORT'])
   application.listen(port , ip)
   tornado.ioloop.IOLoop.instance().start()

Check this repo for example: https://github.com/avinassh/openshift-tornado-starter

Answer 2

It doesn't look like OpenShift lets you just run an application like that. You can see a howto guide here: https://github.com/giulivo/openshift-hellotornado