---
title: nw_protocol_metadata_t
framework: network
role: symbol
role_heading: Type Alias
path: network/nw_protocol_metadata_t
---

# nw_protocol_metadata_t

The abstract superclass for specifying metadata about a network protocol.

## Declaration

```swift
typealias nw_protocol_metadata_t = any OS_nw_protocol_metadata
```

## Topics

### Inspecting Metadata

- [nw_protocol_metadata_copy_definition(_:)](network/nw_protocol_metadata_copy_definition(_:).md)

## See Also

### Data Types

- [nw_advertise_descriptor_t](network/nw_advertise_descriptor_t.md)
- [nw_browse_descriptor_t](network/nw_browse_descriptor_t.md)
- [nw_browse_result_change_t](network/nw_browse_result_change_t.md)
- [nw_browse_result_enumerate_interface_t](network/nw_browse_result_enumerate_interface_t.md)
- [nw_browse_result_t](network/nw_browse_result_t.md)
- [nw_browser_browse_results_changed_handler_t](network/nw_browser_browse_results_changed_handler_t.md)
- [nw_browser_state_changed_handler_t](network/nw_browser_state_changed_handler_t.md)
- [nw_browser_t](network/nw_browser_t.md)
- [nw_connection_boolean_event_handler_t](network/nw_connection_boolean_event_handler_t.md)
- [nw_connection_group_new_connection_handler_t](network/nw_connection_group_new_connection_handler_t.md)
- [nw_connection_group_receive_handler_t](network/nw_connection_group_receive_handler_t.md)
- [nw_connection_group_send_completion_t](network/nw_connection_group_send_completion_t.md)
- [nw_connection_group_state_changed_handler_t](network/nw_connection_group_state_changed_handler_t.md)
- [nw_connection_group_t](network/nw_connection_group_t.md)
- [nw_connection_path_event_handler_t](network/nw_connection_path_event_handler_t.md)