---
title: usableDatagramFrameSize
framework: network
role: symbol
role_heading: Instance Property
path: network/nwprotocolquic/metadata/usabledatagramframesize
---

# usableDatagramFrameSize

The maximum usable size of a datagram frame on a QUIC datagram flow.

## Declaration

```swift
var usableDatagramFrameSize: Int { get }
```

## See Also

### Inspecting Stream State

- [streamIdentifier](network/nwprotocolquic/metadata/streamidentifier.md)