Method IP

req.go:559–569

IP returns the client's IP address. When the request comes from a trusted proxy (see [TrustProxyConfig]), the value is extracted from the configured ProxyHeader by walking the X-Forwarded-For chain right-to-left and skipping all trusted proxy IPs; the first non-trusted IP in the chain is returned. P

()

// non-trusted IP in the chain is returned. Please use Config.TrustProxy to prevent header
// spoofing if your app is behind a proxy.
func (r *DefaultReq) IP() string {
	app := r.c.app
	if r.IsProxyTrusted() && app.config.ProxyHeader != "" {
		return r.extractIPFromHeader(app.config.ProxyHeader)
	}

	if ip := r.c.fasthttp.RemoteIP(); ip != nil {
		return ip.String()
	}
	return ""
}

// extractIPsFromHeader will return a slice of IPs it found given a header name in the order they appear.
// When IP validation is enabled, any invalid IPs will be omitted.