inet keepalive secs?

[Peter Lund]

Checking the inet doc, I find that the keepalive parameter is only true 
| false

Why not allow the user to specify an integer so I could specify my 
gen_tcp listening server to send keepalives every N seconds instead of 
the default value that is way to long?

I tried the search function on erlang.org first but it crashed on me / 
did not work.

/Peter