blahed d4e91ebc33 determine x-forwarded-port from host header
`req.remotePort' returns the ephemeral port, which is not useful.
node v0.10.0 added `req.localPort' which returns what we want, but
we want to maintain backwards compatibility. Fixes #341 & #227
2013-12-26 23:52:05 -08:00
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