Heroku App crashes immediately with R10 and H10 errors
Question: My app runs fine locally using foreman run, and when I execute my
`runserver.py` file using `python runserver.py`. When I push it to Heroku, it
just crashes. I even made changes to my procfile: `web: python runserver.py
${PORT}` so that Heroku will bind to a port number, but to no avail...I've
been at this problem for almost 3 days now. First with my `Procfile` and now
with Heroku...any help would gladly be appreciated. Additionally, I am using
Python with the Flask framework for this project -- I came across Heroku
forward, but it seems to be only for RoR applications..

    
    
    2014-02-24T02:24:50.146153+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
        2014-02-24T02:24:51.323561+00:00 heroku[web.1]: Process exited with status 137
        2014-02-24T02:24:51.333621+00:00 heroku[web.1]: State changed from starting to crashed
        2014-02-24T02:24:51.334368+00:00 heroku[web.1]: State changed from crashed to starting
        2014-02-24T02:24:55.793531+00:00 heroku[web.1]: Starting process with command `python runserver.py`
        2014-02-24T02:24:57.117683+00:00 app[web.1]:  * Running on http://127.0.0.1:5000/
        2014-02-24T02:24:57.117683+00:00 app[web.1]:  * Restarting with reloader
        2014-02-24T02:23:43.987388+00:00 heroku[api]: Deploy c55f7b6 by shaunktw@gmail.com
        2014-02-24T02:23:43.987478+00:00 heroku[api]: Release v8 created by shaunktw@gmail.com
        2014-02-24T02:25:56.204701+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
        2014-02-24T02:25:56.204929+00:00 heroku[web.1]: Stopping process with SIGKILL
        2014-02-24T02:25:57.495657+00:00 heroku[web.1]: Process exited with status 137
    

Procfile:

    
    
    web: python runserver.py ${PORT}
    

runserver.py:

    
    
    from intro_to_flask import app
    
    app.run(debug=True)
    


Answer: I found the answer to this issue...essentially I had to bind a port and
specify the host that I am using:

In my runserver.py file I modified it using:

    
    
    import os
    from intro_to_flask import app
    
    port = int(os.environ.get("PORT", 5000))
    app.run(debug=True, host='0.0.0.0', port=port)
    

It's probably not the most elegant way of doing it.but it works.

