Enabling TCP fast open on apache

[Leonas Sutkevičius <neonasl@xxxxxxxxx>]

Hello,

I'm trying to enable TCP fast open on Apache server. In order to do that I need to tamper with source a bit. Basically I need to insert setsockopt() call between bind() and listen() calls as written in this article http://lwn.net/Articles/508865/ . What I did is I've inserted the following lines 

int qlen = 5;

setsockopt(sock->socketdes, 6, 23, &qlen, sizeof(qlen));

In unix/sockets.c after line 196 in apr library. Im using ubuntu 12.04 with  3.7.8 kernel.

After these changes server still doesn't seem to be using TCP fast open. It doesn't provide client with TFO cookie. So my question is this the correct spot spot to insert the patch. Do you have any ideas why this might not be working?

Regards,

Leonas