# TXTRecordGetItemAtIndex(_:_:_:_:_:_:_:) Allows you to retrieve a key name and value pointer, given an index into a TXT Record. ``` func TXTRecordGetItemAtIndex(_ txtLen: UInt16, _ txtRecord: UnsafeRawPointer!, _ itemIndex: UInt16, _ keyBufLen: UInt16, _ key: UnsafeMutablePointer!, _ valueLen: UnsafeMutablePointer!, _ value: UnsafeMutablePointer!) -> DNSServiceErrorType ``` ## Parameters `txtLen` The size of the received TXT Record. `txtRecord` Pointer to the received TXT Record bytes. `itemIndex` An index into the TXT Record. `keyBufLen` The size of the string buffer being supplied. `key` A string buffer used to store the key name. On return, the buffer contains a null-terminated C string giving the key name. DNS-SD TXT keys are usually 9 characters or fewer. To hold the maximum possible key name, the buffer should be 256 bytes long. `valueLen` On output, will be set to the size of the “value” data. `value` On output, *value is set to point to location within TXT Record bytes that holds the value data. ## Return Value Returns [`kDNSServiceErr_NoError`](/documentation/dnssd/kDNSServiceErr_NoError) on success. Returns kDNSServiceErr_NoMemory if keyBufLen is too short. Returns kDNSServiceErr_Invalid if index is greater than TXTRecordGetCount()-1. ## Discussion Legal index values range from zero to TXTRecordGetCount()-1. It’s also possible to iterate through keys in a TXT record by simply calling TXTRecordGetItemAtIndex() repeatedly, beginning with index zero and increasing until TXTRecordGetItemAtIndex() returns kDNSServiceErr_Invalid. On return: For keys with no value, *value is set to NULL and *valueLen is zero. For keys with empty value, *value is non-NULL and *valueLen is zero. For keys with non-empty value, *value is non-NULL and *valueLen is non-zero. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)