Category Archives: varnish

Garmin GND10 unveiled (it is Nexus FDX!)

Posted on 2016-08-26 by Lasse Karstensen

Mother of all detours; the USB port on the Garmin GND10 isn’t NMEA2000, it is something called Nexus FDX. That took a couple of weeks to figure out, hunting for NMEA2000 protocol headers. Always check your assumptions. Anyway, I’ve written … Continue reading →

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Introducing hitch – a scalable TLS terminating proxy.

Posted on 2015-05-15 by Lasse Karstensen

The last couple of weeks we’ve been pretty busy making SSL/TLS support for Varnish Cache Plus 4. Now that the news is out, I can follow up with some notes here. The setup will be a TLS terminating proxy in … Continue reading →

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PROXY protocol in Varnish

Posted on 2015-01-19 by Lasse Karstensen

Dag has been working implementing support for HAProxy’s PROXY protocol[1] in Varnish. This is a protocol adds a small header on each incoming TCP connection that describes who the real client is, added by (for example) an SSL terminating process. … Continue reading →

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Announcing libvmod-tcp: Adjust Varnish congestion control algorithm.

Posted on 2014-10-03 by Lasse Karstensen

I’ve uploaded my new TCP VMOD for Varnish 4 to github, you can find it here: http://github.com/lkarsten/libvmod-tcp. This VMOD allows you to get the estimated client socket round trip time, and then let you change the TCP connection’s congestion control … Continue reading →

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