---
title: NetworkListener.ServiceRegistrationUpdateHandler
framework: network
role: symbol
role_heading: Type Alias
path: network/networklistener/serviceregistrationupdatehandler
---

# NetworkListener.ServiceRegistrationUpdateHandler

## Declaration

```swift
typealias ServiceRegistrationUpdateHandler = @isolated(any) @Sendable (NetworkListener<ApplicationProtocol>, NetworkListener<ApplicationProtocol>.ServiceRegistrationChange) -> Void
```