def http_request(url)
    curl_handler = Curl::Easy.new()
    curl_handler.url = url

    curl_handler.timeout = 3
    curl_handler.follow_location = true

    begin
        curl_handler.http_get
    rescue Exception => e
        return nil
    end

    resp = Hash[]
    resp['code'] = curl_handler.response_code

    if curl_handler.response_code == 200
        resp['head'] = curl_handler.header_str
        resp['body'] = curl_handler.body_str
    end

    return resp
end