---
title: definition
framework: network
role: symbol
role_heading: Type Property
path: network/nwprotocoludp/definition
---

# definition

The system definition of the User Datagram Protocol.

## Declaration

```swift
static let definition: NWProtocolDefinition
```

## See Also

### Creating UDP Connections

- [NWProtocolUDP.Options](network/nwprotocoludp/options.md)