---
title: NWProtocolIP.Metadata
framework: network
role: symbol
role_heading: Class
path: network/nwprotocolip/metadata
---

# NWProtocolIP.Metadata

Per-packet IP metadata you configure when sending and receiving packets.

## Declaration

```swift
class Metadata
```

## Topics

### Sending IP Options

- [init()](network/nwprotocolip/metadata/init().md)
- [ecn](network/nwprotocolip/metadata/ecn.md)
- [NWProtocolIP.ECN](network/nwprotocolip/ecn.md)
- [serviceClass](network/nwprotocolip/metadata/serviceclass.md)

### Receiving IP Packets

- [receiveTime](network/nwprotocolip/metadata/receivetime.md)

### Instance Methods

- [ecn(_:)](network/nwprotocolip/metadata/ecn(_:).md)
- [serviceClass(_:)](network/nwprotocolip/metadata/serviceclass(_:).md)

## Relationships

### Inherits From

- [NWProtocolMetadata](network/nwprotocolmetadata.md)

### Conforms To

- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)