method

setup_forwarded_info

v1_9_3_392 - Show latest stable - Class: WEBrick::HTTPRequest

setup_forwarded_info()

private

It’s said that all X-Forwarded-* headers will contain more than one (comma-separated) value if the original request already contained one of these headers. Since we could use these values as Host header, we choose the initial(first) value. (apr_table_mergen() adds new value after the existing value with “, ” prefix)

# File lib/webrick/httprequest.rb, line 444
    def setup_forwarded_info
      if @forwarded_server = self["x-forwarded-server"]
        @forwarded_server = @forwarded_server.split(",", 2).first
      end
      @forwarded_proto = self["x-forwarded-proto"]
      if host_port = self["x-forwarded-host"]
        host_port = host_port.split(",", 2).first
        @forwarded_host, tmp = host_port.split(":", 2)
        @forwarded_port = (tmp || (@forwarded_proto == "https" ? 443 : 80)).to_i
      end
      if addrs = self["x-forwarded-for"]
        addrs = addrs.split(",").collect(&:strip)
        addrs.reject!{|ip| PrivateNetworkRegexp =~ ip }
        @forwarded_for = addrs.first
      end
    end

setup_forwarded_info

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