---
title: "requiredInterfaceType(_:)"
framework: network
role: symbol
role_heading: Instance Method
path: "network/nwparametersprovider/requiredinterfacetype(_:)"
---

# requiredInterfaceType(_:)

Require an interface type when connecting, listening, and browsing.

## Declaration

```swift
func requiredInterfaceType(_ type: NWInterface.InterfaceType) -> Self
```

## Parameters

- `type`: The interface type to require.