---
title: protocol
framework: endpointsecurity
role: symbol
role_heading: Instance Property
path: endpointsecurity/es_event_uipc_connect_t/protocol
---

# protocol

The protocol of the socket.

## Declaration

```swift
var `protocol`: Int32
```

## Discussion

Discussion See the man page for socket(2) for a discussion of the protocol parameter.

## See Also

### Inspecting Event Properties

- [file](endpointsecurity/es_event_uipc_connect_t/file.md)
- [domain](endpointsecurity/es_event_uipc_connect_t/domain.md)
- [type](endpointsecurity/es_event_uipc_connect_t/type.md)
- [reserved](endpointsecurity/es_event_uipc_connect_t/reserved.md)