When checking Apache's gzip deflate compression, I realized Apache was sending "Transfer-Encoding: chunked" and not sending the "Content-Length" header

When checking Apache's gzip deflate compression, I realized Apache was sending "Transfer-Encoding: chunked" and not sending the "Content-Length" header

Andy: "Chunked output occurs when Apache doesn't know the total output size before sending, as is the case with compressed transfer (Apache compresses data into chunks when they reach a certain size, then despatches them to the browser/requester while the script is still executing). You could be seeing this because you have mod_deflate or mod_gzip active.

You can disable mod_deflate per file like so (more here)

    SetEnvIfNoCase Request_URI get_file\.php$ no-gzip dont-vary

It's best left on in general as it greatly increases the speed of data transfer.
"

Reference:

https://serverfault.com/questions/59047/apache-sending-transfer-encoding-chunked