---
title: "writeOutput(data:)"
framework: network
role: symbol
role_heading: Instance Method
path: "network/nwprotocolframer/instance/writeoutput(data:)-ydvk"
---

# writeOutput(data:)

Sends arbitrary output data from your protocol to the next protocol.

## Declaration

```swift
final func writeOutput(data: Data)
```

## See Also

### Writing Output

- [parseOutput(minimumIncompleteLength:maximumLength:parse:)](network/nwprotocolframer/instance/parseoutput(minimumincompletelength:maximumlength:parse:).md)
- [writeOutputNoCopy(length:)](network/nwprotocolframer/instance/writeoutputnocopy(length:).md)
- [passThroughOutput()](network/nwprotocolframer/instance/passthroughoutput().md)