Using IP proxiesProxyhandler () format IP, first parameter, request target may be HTTP or HTTPS, corresponding settingBuild_opener () Initialize IPInstall_opener () Sets the proxy IP to global and automatically uses proxy IP when Urlopen () requests
Are you curious about the user-agent that identifies the browser identity, and why each browser has the Mozilla word?
mozilla/5.0 (Windows NT 6.1; WOW64) applewebkit/537.36 (khtml, like Gecko) chrome/27.0.1453.94 safari/537.36
mozilla/5.
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What is User-Agent?
User-Agent: record the browser from which the request comes.
User-Agent analyze website http://www.useragentstring.com/
You can know the visitor information by parsing the User-Agent.
Defined
User Agent string: navigator.useragent
The HTTP specification specifies that the browser should send a short user agent string indicating the name and version number of the browser. But in reality it is not so simple.
Development history
Written in front
The topic is not the goal, mainly for more detailed understanding of the site's reverse climbing mechanism, if you really want to improve the amount of reading blog, high-quality content is essential.
Learn about the Web site's
Modify the User-Agent of the browser in php to disguise your browser and operating system. The method to get HTTP_USER_AGENT is simple, such as the php code: Copy the code as follows :? Phpprint_r ($ _ SERVER );? Copy the code as follows :? Phpprint_
The user agent is used to indicate the identity of the browsing user, so that web developers can know the information of the access terminal. Send different display content based on different terminals. For example, the desktop and mobile versions
The way to get Http_user_agent is simple, like the PHP code:
Copy the Code code as follows:
?>
Copy the Code code as follows:
?>
Both of these can be user-agents and IP information, preferably with regular expressions, filtering out
The way to get Http_user_agent is simple, like the PHP code:
Copy Code code as follows:
?>
Copy Code code as follows:
?>
Both of these can get user-agents and IP information, preferably with regular
Urllib.request.urlopen (URL) is often used in crawlers to open web pages, such as getting page status return valuesThe problem is that Urlopen sends the version of Python urllib on the user-agent that is sent on the GET request, looking at the
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