func()

in correlation/inbound_http_options.go [114:143]

• 19 lines of code
• 8 McCabe index (conditional complexity)

func (c *inboundHandlerConfig) shouldPropagate(r *http.Request) bool {
	if !c.propagation || c.invalidCIDRsForPropagation {
		return false
	}

	if len(c.trustedCIDRsForPropagation) == 0 {
		return true
	}

	remoteAddr := r.RemoteAddr

	if c.xffAllowed != nil {
		// Unix domain sockets have a remote addr of @. This will make the
		// xff package lookup the X-Forwarded-For address if available.
		if remoteAddr == "@" {
			r.RemoteAddr = "127.0.0.1:0"
		}

		remoteAddr = xff.GetRemoteAddrIfAllowed(r, c.xffAllowed)

		// If X-Forwarded-For was allowed and returned a different address, check
		// the original address against our trusted CIDRs for propagation, in case
		// the reverse proxy is trusted
		if remoteAddr != r.RemoteAddr && isTrustedAddr(r.RemoteAddr, c.trustedCIDRsForPropagation) {
			return true
		}
	}

	return isTrustedAddr(remoteAddr, c.trustedCIDRsForPropagation)
}