app.py

import os
import urllib2

from flask import request
from flask import Flask
from flask import Response


app = Flask(__name__)


@app.route('/')
def root():
    """
    Proxies the provided url
    """
    url = request.args.get('url', '')
    usage = 'Pass a properly encoded url parameter e.g. /?url=http://www.google.com'

    if url:
        f = urllib2.urlopen(url)
        response = f.read()
        status = f.getcode()
        headers = f.headers.dict
        content_type = headers.get('content-type', 'text/html')

        return Response(response=response, status=status, headers=headers, content_type=content_type)
    else:
        return usage

if __name__ == '__main__':
    # Bind to PORT if defined, otherwise default to 5000.
    port = int(os.environ.get('PORT', 5000))
    app.run(host='0.0.0.0', port=port)