* Overwrite proxy headers based on directive
Headers of the request sent by the proxy upstream can now be modified in
the following way:
Prefix header with `+`: Header will be added if it doesn't exist
otherwise, the values will be merge
Prefix header with `-': Header will be removed
No prefix: Header will be replaced with given value
* Add missing formating directive reported by go vet
* Overwrite up/down stream proxy headers
Add Up/DownStreamHeaders to UpstreamHost
Split `proxy_header` option in `proxy` directive into `header_upstream`
and `header_downstream`. By splitting into two, it makes it clear in
what direction the given headers must be applied.
`proxy_header` can still be used (to maintain backward compatability)
but its assumed to be `header_upstream`
Response headers received by the reverse proxy from the upstream host
are updated according the `header_downstream` rules.
The update occurs through a func given to the reverse proxy, which is
applied once a response is received.
Headers (for upstream and downstream) can now be modified in
the following way:
Prefix header with `+`: Header will be added if it doesn't exist
otherwise, the values will be merge
Prefix header with `-': Header will be removed
No prefix: Header will be replaced with given value
Updated branch with changes from master
* minor refactor to make intent clearer
* Make Up/Down stream headers naming consistent
* Fix error descriptions to be more clear
* Fix lint issue
Merged config and app packages into one called caddy. Abstracted away caddy startup functionality making it easier to embed Caddy in any Go application and use it as a library. Graceful restart (should) now ensure child starts properly. Now piping a gob bundle to child process so that the child can match up inherited listeners to server address. Much cleanup still to do.
