OpenVPN: how to enable TCP nodelay?

[jcassette]

Hello,

I'm using OpenVPN on a server, it's running over TCP with tun(4), and is working fine. However I get very high latency through the tunnel.

After some research I came to this link: http://community.openvpn.net/openvpn/ticket/158

When is HAVE_SETSOCKOPT supposed to be defined? How may I set it?

Regards,

 

[Anonymous]

When is HAVE_SETSOCKOPT supposed to be defined?

I don't know.

How may I set it?

You may define it once you make OpenVPN from the ports:

# cd /usr/ports/security/openvpn
# make CFLAGS="-DHAVE_SETSOCKOPT"
# make install clean

I cannot tell, whether this gives to you the desired effect, though.

 

[jcassette]

Thank you for your reply.

I was on the wrong way, HAVE_SETSOCKOPT is actually defined in "config.h"

I think the problem is TCP_NODELAY which is defined in the <netinet/tcp.h> header.

While having a look at "syshead.h", I discovered that it won't include <netinet/tcp.h>:

#ifdef TARGET_FREEBSD

#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif

#ifdef HAVE_NETINET_IN_SYSTM_H
#include <netinet/in_systm.h>
#endif

#ifdef HAVE_NETINET_IP_H
#include <netinet/ip.h>
#endif

#ifdef HAVE_NET_IF_TUN_H
#include <net/if_tun.h>
#endif

#endif /* TARGET_FREEBSD */

I will try to include it tomorrow...

 

[jcassette]

I added:

#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif

just after the ip.h include and it's now working all good