We might end up calling client_close() from start_reply(), but that will free the fcgi/proxy bufferevent while they're still used on the stack. Instead, start_reply() only sets REQUEST_DONE and exits, returning the error eventually, so callers know when to stop.

fatal usually appends the error string. Add 'fatalx' that doesn't. Fix callers and move the prototypes to log.h

will help in future restructuring to have fixed-size objects.

matches found with % grep -R '=[ ]*{' . | fgrep -v const

add a `sni' option for the `proxy' block: the given name is used instead of the one extracted by the `relay-to' rule.

properly release everything when during client_close if the request was managed by a proxy.

as a side effect the order of the content of a server block is relaxed: options, location or proxy blocks can be put in any order.