Random proxy middleware for Scrapy (http://scrapy.org/)
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)
Install
The quick way:
pip install scrapy_proxies
Or checkout the source and run
python setup.py install
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.downloadermiddlewares.retry.RetryMiddleware': 90,
'scrapy_proxies.RandomProxy': 100,
'scrapy.downloadermiddlewares.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'
# Proxy mode
# 0 = Every requests have different proxy
# 1 = Take only one proxy from the list and assign it to every requests
# 2 = Put a custom proxy to use in the settings
PROXY_MODE = 0
# If proxy mode is 2 uncomment this sentence :
#CUSTOM_PROXY = "http://host1:port"
For older versions of Scrapy (before 1.0.0) you have to use scrapy.contrib.downloadermiddleware.retry.RetryMiddleware and scrapy.contrib.downloadermiddleware.httpproxy.HttpProxyMiddleware middlewares instead.
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)