that is, what can the server see through the useragent in header
that is, what can the server see through the useragent in header
for example:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36means:
Chrome
65.0.3325.181
WebKit 537.36
Linux x86_64 if you ask many times in a short time, people will see exactly the same user-agent
is definitely a non-human operation, so you can see that you are a crawler
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