<!--
{
  "availability" : [
    "iOS: 2.0.0 -",
    "iPadOS: 2.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.2.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/NetServiceBrowserDelegate",
  "metadataVersion" : "0.1.0",
  "role" : "Protocol",
  "symbol" : {
    "kind" : "Protocol",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "c:objc(pl)NSNetServiceBrowserDelegate"
  },
  "title" : "NetServiceBrowserDelegate"
}
-->

# NetServiceBrowserDelegate

The interface a net service browser uses to inform a delegate about the state of service discovery.

```
protocol NetServiceBrowserDelegate : NSObjectProtocol
```

## Overview

Delegates of [`NetServiceBrowser`](/documentation/Foundation/NetServiceBrowser) instances optionally implement these methods.

## Topics

### Using Network Service Browsers

[`-  netServiceBrowser:didFindDomain:moreComing:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowser(_:didFindDomain:moreComing:))

Tells the delegate the sender found a domain.

[`-  netServiceBrowser:didRemoveDomain:moreComing:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowser(_:didRemoveDomain:moreComing:))

Tells the delegate the a domain has disappeared or has become unavailable.

[`-  netServiceBrowser:didFindService:moreComing:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowser(_:didFind:moreComing:))

Tells the delegate the sender found a service.

[`-  netServiceBrowser:didRemoveService:moreComing:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowser(_:didRemove:moreComing:))

Tells the delegate a service has disappeared or has become unavailable.

[`-  netServiceBrowserWillSearch:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowserWillSearch(_:))

Tells the delegate that a search is commencing.

[`-  netServiceBrowser:didNotSearch:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowser(_:didNotSearch:))

Tells the delegate that a search was not successful.

[`-  netServiceBrowserDidStopSearch:`](/documentation/Foundation/NetServiceBrowserDelegate/netServiceBrowserDidStopSearch(_:))

Tells the delegate that a search was stopped.

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)