def submit(recaptcha_challenge_field, recaptcha_response_field, private_key,
           remoteip):
    """
    Submits a reCAPTCHA request for verification. Returns RecaptchaResponse
    for the request

    recaptcha_challenge_field -- The value of recaptcha_challenge_field from
    the form
    recaptcha_response_field -- The value of recaptcha_response_field from the
    form
    private_key -- your reCAPTCHA private key
    remoteip -- the user's ip address
    """

    if not (recaptcha_response_field and recaptcha_challenge_field and
            len(recaptcha_response_field) and len(recaptcha_challenge_field)):
        return RecaptchaResponse(is_valid=False, 
                                 error_code='incorrect-captcha-sol')
    

    def encode_if_necessary(s):
        if isinstance(s, unicode):
            return s.encode('utf-8')
        return s

    params = urllib.urlencode({
        'privatekey': encode_if_necessary(private_key),
        'remoteip':  encode_if_necessary(remoteip),
        'challenge':  encode_if_necessary(recaptcha_challenge_field),
        'response':  encode_if_necessary(recaptcha_response_field),
    })

    request = urllib2.Request(
        url = "http://%s/verify" % VERIFY_SERVER,
        data = params,
        headers = {
            "Content-type": "application/x-www-form-urlencoded",
            "User-agent": "reCAPTCHA Python"
        }
    )
    
    httpresp = urllib2.urlopen(request)

    return_values = httpresp.read().splitlines();
    httpresp.close();

    return_code = return_values [0]

    if return_code == "true":
        return RecaptchaResponse(is_valid=True)
    else:
        return RecaptchaResponse(is_valid=False, error_code=return_values[1])
dataset/ETHPy150Open hmarr/django-mumblr/mumblr/entrytypes/captcha.py/submit/original