---
title: opcode
framework: network
role: symbol
role_heading: Instance Property
path: network/nwprotocolwebsocket/metadata/opcode
---

# opcode

The type code of a WebSocket message.

## Declaration

```swift
final let opcode: NWProtocolWebSocket.Opcode
```

## See Also

### Receiving Messages

- [closeCode](network/nwprotocolwebsocket/metadata/closecode.md)
- [NWProtocolWebSocket.CloseCode](network/nwprotocolwebsocket/closecode.md)