---
title: assumesHTTP3Capable
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nsmutableurlrequest/assumeshttp3capable
---

# assumesHTTP3Capable

A Boolean value that indicates whether the server is assumed to support HTTP/3.

## Declaration

```swift
var assumesHTTP3Capable: Bool { get set }
```

## Discussion

Discussion When YES, enables QUIC racing without HTTP/3 service discovery. Defaults to NO. The default may be YES in a future OS update.