Add X-Request-Start header so we can track queue times in New Relic RPM beginning at Varnish. - Fixed for Varnish 3.0.2-1 on Ubuntu.

default.c

/*
 * In varnish 3.0 the includes must be outside a subroutine.
 */

C{
        #include <stddef.h>
        #include <sys/time.h>
}C


sub vcl_recv {


    /*
     * Add X-Request-Start header so we can track queue times in New Relic RPM beginning at Varnish.
     *
     */

    C{
        struct timeval detail_time;
        gettimeofday(&detail_time,NULL);
        char start[20];
        sprintf(start, "t=%lu%06lu", detail_time.tv_sec, detail_time.tv_usec);
        VRT_SetHdr(sp, HDR_REQ, "\020X-Request-Start:", start, vrt_magic_string_end);
     }C

   ...
}