---
title: defaultProtocolStack
framework: network
role: symbol
role_heading: Instance Property
path: network/nwparameters/defaultprotocolstack
---

# defaultProtocolStack

The protocol stack used by connections and listeners.

## Declaration

```swift
final var defaultProtocolStack: NWParameters.ProtocolStack { get }
```

## See Also

### Modifying Protocol Stacks

- [NWParameters.ProtocolStack](network/nwparameters/protocolstack.md)
- [NWProtocol](network/nwprotocol.md)