XF 2.1 Where do I find Keep Alive

[Will Franco]

I'm sure this is obvious but where do I find this feature?

 

[Matthew S]

Check the documentation for your HTTP server.

 

[briansol]

yeah, not a part of XF or any other installed software... it's native to the webserver itself that does the serving, likely apache or nginx.

Assuming apache,
You can stuff it in an htaccess file, although root access to httpd.conf may be necessary depending on your host's configuration.

# BEGIN KeepAlive
<ifModule mod_headers.c>
    Header set Connection keep-alive
</ifModule>