Scrapy and proxies

Question

How do you utilize proxy support with the python web-scraping framework Scrapy?

Answer 1

From the Scrapy FAQ,

Does Scrapy work with HTTP proxies?

Yes. Support for HTTP proxies is provided (since Scrapy 0.8) through the HTTP Proxy downloader middleware. See HttpProxyMiddleware.

The easiest way to use a proxy is to set the environment variable http_proxy. How this is done depends on your shell.

 C:\>set http_proxy=http://proxy:port csh% setenv http_proxy http://proxy:port sh$ export http_proxy=http://proxy:port 

if you want to use https proxy and visited https web,to set the environment variable http_proxy you should follow below,

 C:\>set https_proxy=https://proxy:port csh% setenv https_proxy https://proxy:port sh$ export https_proxy=https://proxy:port 

Answer 2

Single Proxy

1. Enable HttpProxyMiddleware in your settings.py, like this:

   DOWNLOADER_MIDDLEWARES = {     'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': 1 } 

2. pass proxy to request via request.meta:

   request = Request(url="http://example.com") request.meta['proxy'] = "host:port" yield request 

You also can choose a proxy address randomly if you have an address pool. Like this:

Multiple Proxies

class MySpider(BaseSpider):     name = "my_spider"     def __init__(self, *args, **kwargs):         super(MySpider, self).__init__(*args, **kwargs)         self.proxy_pool = ['proxy_address1', 'proxy_address2', ..., 'proxy_addressN']      def parse(self, response):         ...parse code...         if something:             yield self.get_request(url)      def get_request(self, url):         req = Request(url=url)         if self.proxy_pool:             req.meta['proxy'] = random.choice(self.proxy_pool)         return req