Usage: ./configure VARNISHSRC=DIR VARNISHSRC is the directory of the Varnish source tree for which to compile your vmod. Both the VARNISHSRC and VARNISHSRC/include will be added to the include search paths for your module. Make targets: make - builds the vmod make install - installs your vmod in VMODDIR make check - runs the unit tests in src/tests/*.vtc In your VCL you could then use this vmod like the following. This sets the request header X-GeoIP to the requestor's geo (or Unknown). ,---- | import geoip; | | sub vcl_recv { | set req.http.X-Forwarded-For = client.ip; | set req.http.X-GeoIP = geoip.country(req.http.X-Forwarded-For) | } `---- CREDITS: the idea for this varnish module and the proof of concept and the initial implementation are all due to David Newhall II Lee Doolan, the maintainer, added libtool configuration details, added thread safety, added SCM (git).