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Date: Wed, 19 Jun 2013 08:52:28 +0200
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From: Robert Schoultz <rob444@gmail.com>
To: "users@httpd.apache.org" <users@httpd.apache.org>
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Subject: Re: [users@httpd] Enabling TCP fast open on apache

Hello Leonas.

I _believe_ TCP_FASTOPEN is disabled in the kernel by default. Is it enable=
d?

Try this and see if it helps: echo 1 > /proc/sys/net/ipv4/tcp_fastopen

/Rob

On Sat, Jun 15, 2013 at 12:43 PM, Leonas Sutkevi=C4=8Dius <neonasl@gmail.co=
m> wrote:
> 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 followi=
ng
> lines
> int qlen =3D 5;
>
> setsockopt(sock->socketdes, 6, 23, &qlen, sizeof(qlen));
>
> In unix/sockets.c after line 196 in apr library. Im using ubuntu 12.04 wi=
th
> 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 correc=
t
> spot spot to insert the patch. Do you have any ideas why this might not b=
e
> working?
>
> Regards,
>
> Leonas

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