Does curl really not set the byte limit for the collected content? For example, if I only want the keyword in the header part of the webpage, it is a waste of time to collect all the key words.

Does curl really not set the byte limit for the collected content? For example, if I only want the keyword in the header part of the web page, it is a waste of resources, such as the question !, In the manual, does & nbsp; CURLOPT_NOBODYTRUEtoexcludethebodyfromtheoutputgoogle say that curl does not really set the byte limit for the collected content? For example, if I only want the keyword in the header part of the webpage, it is too wasteful to collect all the key words.
As the question!

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Manual description
CURLOPT_NOBODY TRUE to exclude the body from the output
Google says to exclude the body from the output
I didn't say I couldn't get all the content.

While
Get_headers returns all header information
Get_meta_tags extracts all meta tag content attributes from a file.

Self-built