http://scrapy.org/)
Random proxy middleware for Scrapy (Processes Scrapy requests using a random proxy from list to avoid IP ban and improve crawling speed.
Get your proxy list from sites like http://www.hidemyass.com/ (copy-paste into text file and reformat to http://host:port format)
settings.py
# Retry many times since proxies often fail
RETRY_TIMES = 10
# Retry on most error codes since proxies fail for different reasons
RETRY_HTTP_CODES = [500, 503, 504, 400, 403, 404, 408]
DOWNLOADER_MIDDLEWARES = {
'scrapy.contrib.downloadermiddleware.retry.RetryMiddleware': 90,
# Fix path to this module
'yourspider.randomproxy.RandomProxy': 100,
'scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware': 110,
}
# Proxy list containing entries like
# http://host1:port
# http://username:password@host2:port
# http://host3:port
# ...
PROXY_LIST = '/path/to/proxy/list.txt'
Your spider
In each callback ensure that proxy /really/ returned your target page by checking for site logo or some other significant element. If not - retry request with dont_filter=True
if not hxs.select('//get/site/logo'):
yield Request(url=response.url, dont_filter=True)