Lighttpd

When lighttpd operates behind a unix socket mod_cgi does not work because the parsing of some CGI variable (SERVER_ADDR and REMOTE_ADDR) fails without warning (indeed leading to a segmentation fault of the forked process before execve).

This type of partial testing {{{ srv_sock->addr.plain.sa_family == AF_INET6 ? srv_sock->addr.ipv6.sin6_port : srv_sock->addr.ipv4.sin_port }}} overlook completely the existence of unix domain sockets and leads to the failure of inet_ntop.

At the very least this fact should be documented and a good error message should be logged. But it should be better to be able to use mod_cgi behind a unix domain socket.