playframework/Play20 — pull request #412 by ms-tg (2012-08-07 19:12:20+00:00)
Title: Add constants for standard HTTP proxy headers

Since Apache mod_proxy[1], these headers have been used by http
proxies to pass on information about the original request url:
* X-Forwarded-Host
* X-Forwarded-Port
* X-Forwarded-Proto

Their support is widespread [2][3], so play framework should
include constants for them.

[1] http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#x-headers
[2] https://github.com/jaswope/rack-reverse-proxy/pull/12
[3] https://github.com/nodejitsu/node-http-proxy/issues/53