March 2019
Beginner
490 pages
12h 40m
English
book
Learning Python Networking - Second Edition
by José Manuel Ortega, Dr. M. O. Faruque Sarker, Sam Washington
Content preview from Learning Python Networking - Second Edition
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User agent
Another important request header is the User-Agent header. Any client that communicates using HTTP can be referred to as a user agent. RFC 7231 suggests that user agents should use the User-Agent header to identify themselves in every request. For example, the user agent if you are using the Chrome browser might be as follows:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Also, we can view the user agent used by the urllib Python version:
>>> from urllib.request import Request>>> from urllib.request import urlopen>>> req = Request('http://www.python.org') >>> urlopen(req)<http.client.HTTPResponse object at 0x034AEBF0>>>> req.get_header('User-agent') ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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