---
title: "writeHeader(_:)"
framework: applearchive
role: symbol
role_heading: Instance Method
path: "applearchive/archivestreamprotocol/writeheader(_:)"
---

# writeHeader(_:)

Writes an entry header.

## Declaration

```swift
func writeHeader(_ header: ArchiveHeader) throws
```

## Parameters

- `header`: The entry header to which the operation writes.

## See Also

### Reading and Writing Headers

- [readHeader()](applearchive/archivestreamprotocol/readheader().md)