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

# definition

The system definition of the WebSocket protocol.

## Declaration

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

## See Also

### Creating WebSocket Connections

- [NWProtocolWebSocket.Options](network/nwprotocolwebsocket/options.md)