connect to application server via unix-domain socket #383
Some application servers speaking HTTP/1.1 is capable of listening to an unix-domain socket (which is often faster and easier to operate than TCP sockets).
This PR add to the proxy implementation of H2O the support to connect to such servers.
The URL of such a server is expressed by
…0reverse-proxy/test.pl --unix-socket=1` (note: requires an unreleased version of Starlet)