# http.py, by chaynes@indiana.edu

import urllib

def get(url):
    '''Reads and returns as a string the response for url
    of the form http://HOST[:PORT][/QUERY]. PORT defaults to
    80, and QUERY defaults to empty.'''
    while True:
        connection = urllib.FancyURLopener({}).open(url)
        text = connection.read()
        connection.close()
        if text.count('<meta http-equiv="Refresh"') == 1:
            _, rest = text.split('URL=', 1)
            url, _ = rest.split('"', 1)
        else: # the page has not meta-moved
            break
    return text

def main():
    assert get('http://www.cs.indiana.edu/~chaynes/test.txt') \
           == 'testing\none two\n'
    print 'OK'

if __name__ == '__main__':
    main()