---
title: "write to stream · RUAL Documentation"
description: "Writes part of a response to the client. After the whole response has been streamed, we need to call end stream."
canonical: https://docs.rual.nl/block-types/http connection/httpconnection_set_stream
language: en
---

# write to stream

This block is part of the [`http connection`](https://docs.rual.nl/block-types/http%20connection) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

Writes part of a response to the client. After the whole response has been streamed, we need to call end stream.

- flow `flow`

- connection required `httpconnection`

- code required `number` HTTP Status Code to return on this response.

- type `value` Sets the Content-Type HTTP header.

Default `text/plain`

- Headers `array ` Custom HTTP Headers to set, Array of Objects [{ key: Value, value: Value }]

- Chunk required `value` Writes part of a response to the client. After the whole response has been streamed, we need to call end stream.

- flow `flow`

- connection `httpconnection`

A typical wiring for [write to stream](https://docs.rual.nl/block-types/http%20connection/httpconnection_set_stream): a [function trigger](https://docs.rual.nl/block-types/globals/trigger_custom_function) starts the flow; [number](https://docs.rual.nl/block-types/number/number_default) feeds the `code` pin; the `flow` out pin feeds [debug](https://docs.rual.nl/block-types/state%20ui/state_debug).

![Studio canvas example for the write to stream block: typical wiring for write to stream.](https://docs.rual.nl/canvas-examples/httpconnection_set_stream.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).