unix domain socket support

[gfrankliu]

consul supports unix domain socket instead tcp port 8500 for http. https://www.consul.io/docs/agent/options.html#addresses Can upsync supports that? e.g.: instead of upsync 127.0.0.1:8500/v1/kv/upstreams/test can we do: upsync unix:///path/to/socket uri=/v1/kv/upstreams/test

[gfrankliu]

curl seems to support it http://superuser.com/questions/834307/can-curl-send-requests-to-sockets

[xiaokai-wang]

That will be cool.