---
title: "nw_parameters_copy_default_protocol_stack(_:)"
framework: network
role: symbol
role_heading: Function
path: "network/nw_parameters_copy_default_protocol_stack(_:)"
---

# nw_parameters_copy_default_protocol_stack(_:)

Accesses the protocol stack used by connections and listeners.

## Declaration

```swift
func nw_parameters_copy_default_protocol_stack(_ parameters: nw_parameters_t) -> nw_protocol_stack_t
```

## See Also

### Modifying Protocol Stacks

- [nw_protocol_stack_t](network/nw_protocol_stack_t.md)
- [nw_protocol_definition_t](network/nw_protocol_definition_t.md)
- [nw_protocol_options_t](network/nw_protocol_options_t.md)