fix: skip browser detection for nginx and envoy

Author: steveiliop56

internal/controller/proxy_controller.go

@@ -323,11 +323,14 @@ func (controller *ProxyController) getHeader(c *gin.Context, header string) (str
 }
 
 func (controller *ProxyController) useBrowserResponse(proxyCtx ProxyContext) bool {
-	if !proxyCtx.IsBrowser {
+	// If it's nginx or envoy we need non-browser response
+	if proxyCtx.ProxyType == Nginx || proxyCtx.ProxyType == Envoy {
 		return false
 	}
 
-	if proxyCtx.ProxyType == Traefik {
+	// For other proxies (traefik or caddy) we can check
+	// the user agent to determine if it's a browser or not
+	if proxyCtx.IsBrowser {
 		return true
 	}