---
title: "CFSocketSetDefaultNameRegistryPortNumber(_:)"
framework: corefoundation
role: symbol
role_heading: Function
path: "corefoundation/cfsocketsetdefaultnameregistryportnumber(_:)"
---

# CFSocketSetDefaultNameRegistryPortNumber(_:)

Sets the default port number with which to connect to a CFSocket name server.

## Declaration

```swift
func CFSocketSetDefaultNameRegistryPortNumber(_ port: UInt16)
```

## Parameters

- `port`: The port number to use to connect to the CFSocket name server.

## Discussion

Discussion If you do not provide a name server signature or leave out the socket address in the signature when calling one of the name registry functions, such as CFSocketRegisterSocketSignature(_:_:_:_:), port will be used for the connection.

## See Also

### Core Foundation Socket Name Server Utilities Miscellaneous Functions

- [CFSocketCopyRegisteredSocketSignature(_:_:_:_:_:)](corefoundation/cfsocketcopyregisteredsocketsignature(_:_:_:_:_:).md)
- [CFSocketCopyRegisteredValue(_:_:_:_:_:)](corefoundation/cfsocketcopyregisteredvalue(_:_:_:_:_:).md)
- [CFSocketGetDefaultNameRegistryPortNumber()](corefoundation/cfsocketgetdefaultnameregistryportnumber().md)
- [CFSocketRegisterSocketSignature(_:_:_:_:)](corefoundation/cfsocketregistersocketsignature(_:_:_:_:).md)
- [CFSocketRegisterValue(_:_:_:_:)](corefoundation/cfsocketregistervalue(_:_:_:_:).md)
- [CFSocketUnregister(_:_:_:)](corefoundation/cfsocketunregister(_:_:_:).md)