func setForwardedFor()

in helpers.go [40:54]

• 11 lines of code
• 3 McCabe index (conditional complexity)

func setForwardedFor(newHeaders *http.Header, originalRequest *http.Request) {
	if clientIP, _, err := net.SplitHostPort(originalRequest.RemoteAddr); err == nil {
		var header string

		// If we aren't the first proxy retain prior
		// X-Forwarded-For information as a comma+space
		// separated list and fold multiple headers into one.
		if prior, ok := originalRequest.Header["X-Forwarded-For"]; ok {
			header = strings.Join(prior, ", ") + ", " + clientIP
		} else {
			header = clientIP
		}
		newHeaders.Set("X-Forwarded-For", header)
	}
}