---
title: additionalServerHeaders
framework: network
role: symbol
role_heading: Instance Property
path: network/nwprotocolwebsocket/metadata/additionalserverheaders
---

# additionalServerHeaders

Additional HTTP headers sent by the server during the WebSocket handshake.

## Declaration

```swift
var additionalServerHeaders: [(String, String)]? { get }
```

## See Also

### Inspecting Handshake Results

- [selectedSubprotocol](network/nwprotocolwebsocket/metadata/selectedsubprotocol.md)