This is a snippet of my content_log.txt. GenericCache was running and working for blizzard/origin at the time.
[2018-06-13 16:07:42] HTTP (CDN,64) - edge.steam-dns.top.comcast.net (69.241.32.246:443 / 69.241.32.246:443, host: edge.steam-dns.top.comcast.net): Closing connection
[2018-06-13 16:07:42] HTTP (CDN,64) - edge.steam-dns.top.comcast.net (69.241.32.246:443 / 69.241.32.246:443, host: edge.steam-dns.top.comcast.net): Closing connection
[2018-06-13 16:07:42] HTTP (CDN,64) - edge.steam-dns.top.comcast.net (69.241.32.246:443 / 69.241.32.246:443, host: edge.steam-dns.top.comcast.net): Closing connection
[2018-06-13 16:07:42] HTTP (CS,612) - valve612.steampipe.steamcontent.com (192.168.1.8:80 / 192.168.1.8:80, host: valve612.steamcontent.com): Closing connection
[2018-06-13 16:07:42] HTTP (CS,615) - valve615.steampipe.steamcontent.com (192.168.1.8:80 / 192.168.1.8:80, host: valve615.steamcontent.com): Closing connection
[2018-06-13 16:07:43] HTTP (CDN,64) - edge.steam-dns-2.top.comcast.net (69.241.116.154:443 / 69.241.116.154:443, host: edge.steam-dns-2.top.comcast.net): Closing connection
[2018-06-13 16:07:43] HTTP (CDN,64) - edge.steam-dns-2.top.comcast.net (69.241.116.154:443 / 69.241.116.154:443, host: edge.steam-dns-2.top.comcast.net): Closing connection
[2018-06-13 16:07:43] HTTP (CDN,64) - edge.steam-dns-2.top.comcast.net (69.241.116.154:443 / 69.241.116.154:443, host: edge.steam-dns-2.top.comcast.net): Closing connection