How to get HTTP header as fast as possible?

Question

HTTP headers

Tell me how quickly (faster than using curl) to get the http header from a remote server - HTTP / 1.1 200 OK (for example, I have 300,000 urls) to find out / check if the file exists I
run it like this:

curl --connect-timeout 1 -Is site.com/image/325.jpg 2>/dev/null | head -n1
if [ "$Iswork" == "HTTP/1.1 200 OK
" ];
then
...............

Is it possible to speed up? Perhaps there is something else instead of curl?

Answer 1

Yes, it’s elementary to do it yourself: connect to the socket, read only the header (say, request 128 bytes), break the connection and process the header.
But here the biggest gag is the data transfer rate, so what's the point of such perversions?