<!--
{
  "availability" : [
    "iOS: 14.0.0 -",
    "iPadOS: 14.0.0 -",
    "macCatalyst: -",
    "macOS: 11.0.0 -",
    "tvOS: 14.0.0 -",
    "visionOS: -",
    "watchOS: 7.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AppleArchive",
  "identifier" : "/documentation/AppleArchive/ArchiveStreamProtocol/readHeader()",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Apple Archive"
    ],
    "preciseIdentifier" : "s:12AppleArchive0B14StreamProtocolP10readHeaderAA0bF0CSgyKF"
  },
  "title" : "readHeader()"
}
-->

# readHeader()

Reads the next entry header.

```
func readHeader() throws -> ArchiveHeader?
```

## Return Value

A new header instance, or `nil` if the operation reaches the end of the archive stream.

---

Copyright &copy; 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)