---
title: NEFlowMetaData
framework: networkextension
role: symbol
role_heading: Class
path: networkextension/neflowmetadata
---

# NEFlowMetaData

Additional information about data flowing through a per-app VPN provider.

## Declaration

```swift
class NEFlowMetaData
```

## Overview

Overview This metadata is only present for data flowing through per-app VPN providers, that is, app proxy providers and packet tunnel providers in per-app VPN mode, as indicated by the routingMethod property.

## Topics

### Getting source app information

- [sourceAppUniqueIdentifier](networkextension/neflowmetadata/sourceappuniqueidentifier.md)
- [sourceAppSigningIdentifier](networkextension/neflowmetadata/sourceappsigningidentifier.md)
- [sourceAppAuditToken](networkextension/neflowmetadata/sourceappaudittoken.md)

### Getting flow information

- [filterFlowIdentifier](networkextension/neflowmetadata/filterflowidentifier.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Related Documentation

- [NEPacket](networkextension/nepacket.md)

### Flow handling

- [NEAppProxyTCPFlow](networkextension/neappproxytcpflow.md)
- [NEAppProxyUDPFlow](networkextension/neappproxyudpflow.md)
- [NEAppProxyFlow](networkextension/neappproxyflow.md)
- [In-Provider Networking](networkextension/in-provider-networking.md)
- [Handling Flow Copying](networkextension/handling-flow-copying.md)