---
title: "CFNetServiceSetTXTData(_:_:)"
framework: cfnetwork
role: symbol
role_heading: Function
path: "cfnetwork/cfnetservicesettxtdata(_:_:)"
---

# CFNetServiceSetTXTData(_:_:)

Sets the TXT record for a CFNetService.

## Declaration

```swift
func CFNetServiceSetTXTData(_ theService: CFNetService, _ txtRecord: CFData) -> Bool
```

## Parameters

- `theService`: CFNetServiceRef for which a TXT record is to be set; cannot be NULL.
- `txtRecord`: Contents of the TXT record that is to be set. The contents must not exceed 1450 bytes.

## Return Value

Return Value TRUE if the TXT record was set; otherwise, FALSE.

## Discussion

Discussion This function sets a TXT record for the specified service. If the service is currently registered on the network, the record is broadcast. Setting a TXT record on a service that is still being resolved is not allowed. Special Considerations This function is thread safe.

## See Also

### Network Services

- [CFNetService](cfnetwork/cfnetservice.md)
- [CFNetServiceBrowser](cfnetwork/cfnetservicebrowser.md)
- [CFNetServiceBrowserFlags](cfnetwork/cfnetservicebrowserflags.md)
- [CFNetServiceMonitor](cfnetwork/cfnetservicemonitor.md)
- [CFNetServiceMonitorType](cfnetwork/cfnetservicemonitortype.md)
- [CFNetServiceClientContext](cfnetwork/cfnetserviceclientcontext.md)
- [CFNetServiceRegisterFlags](cfnetwork/cfnetserviceregisterflags.md)
- [CFNetServicesError](cfnetwork/cfnetserviceserror.md)
- [CFNetServiceBrowserInvalidate(_:)](cfnetwork/cfnetservicebrowserinvalidate(_:).md)
- [CFNetServiceBrowserScheduleWithRunLoop(_:_:_:)](cfnetwork/cfnetservicebrowserschedulewithrunloop(_:_:_:).md)
- [CFNetServiceBrowserCreate(_:_:_:)](cfnetwork/cfnetservicebrowsercreate(_:_:_:).md)
- [CFNetServiceBrowserGetTypeID()](cfnetwork/cfnetservicebrowsergettypeid().md)
- [CFNetServiceBrowserSearchForDomains(_:_:_:)](cfnetwork/cfnetservicebrowsersearchfordomains(_:_:_:).md)
- [CFNetServiceBrowserSearchForServices(_:_:_:_:)](cfnetwork/cfnetservicebrowsersearchforservices(_:_:_:_:).md)
- [CFNetServiceBrowserStopSearch(_:_:)](cfnetwork/cfnetservicebrowserstopsearch(_:_:).md)