On Feb 7, 2008, at 12:25 PM, Colm MacCarthaigh wrote:
On Thu, Feb 07, 2008 at 03:38:38PM +0700, Niko Wilfritz Sianipar
Sianipar wrote:
Can I use tcp_get_info() function from Linux C library in my
Apache code to get information about the TCP connection?
Yep, you can, though obviously it will be completely unportable.
I need it to estimate the transfer time of last packet sent in my
Apache code? Is Apache can do that??
That's effectively unknowable information without something at both
ends
though. tcp_get_info will give you an incling, but not much of a
useful
one IMO.
For this kind of stuff it's more typical to use tools like netstat,
tcpdump,
lft (layer four traceroute) and so on - instrumenting Apache directly
seems unusual, but it would work :-)
Have a look at the ntp protocol - it is fairly effective at this -
and I would not rule out that you'd be able to do something similar
(abeit less accurate) on a keep-alive connection.
Dw
