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unleash.unleash/website/docs/how-to/how-to-run-the-unleash-proxy.mdx
Thomas Heartman 247f751fea
docs: generate client-side SDK docs from readme (#2949)
## What

Delete static client-side SDK docs in favor of generating them at
build time.

- Add a separate list of `clientSideSdks` to `readme-fns`.
- Use sdk type to determine which generation directory it goes into
- Replace manual sidebar category with autogenerated one

## Why

This does the same for client-side SDKs as was done for server-side
SDKs in https://github.com/Unleash/unleash/pull/2858

(Supersedes #2859)
2023-01-25 14:36:50 +01:00

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4.3 KiB
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---
title: How to run the Unleash Proxy
---
import ApiRequest from '@site/src/components/ApiRequest'
:::info Placeholders
Placeholders in the code samples below are delimited by angle brackets (i.e. `<placeholder-name>`). You will need to replace them with the values that are correct in _your_ situation for the code samples to run properly.
:::
The [Unleash Proxy](../reference/unleash-proxy.md) provides a way for you to consume feature toggles in [front-end clients](../reference/sdks/index.md#front-end-sdks), such as the [JavaScript Proxy client](/docs/generated/sdks/client-side/javascript-browser.md) and [React Proxy client](/docs/generated/sdks/client-side/react.md).
Depending on your setup, the Proxy is most easily run in one of two ways, depending on your situation:
- [Via Docker](#run-proxy-via-docker)
- [As a Node.js app](#run-proxy-as-node-app)
If you're using a hosted version of Unleash, we can also run the proxy for you.
## Prerequisites
This is what you need before you can run the proxy:
- A running Unleash server to connect to. You'll need its API path (e.g. `https://app.unleash-hosted.com/demo/api`) to connect the proxy to it.
- A [client API token](../reference/api-tokens-and-client-keys#client-tokens) for the proxy to use.
- If you're running the Proxy via Docker: [the `docker` command line tool](https://www.docker.com/).
- If you're running the Proxy as a Node.js app: [Node.js and its command line tools](https://nodejs.org/).
- A [Proxy client key](../reference/api-tokens-and-client-keys#proxy-client-keys). This can be any arbitrary string (for instance: `proxy-client-key`). Use this key when connecting a client SDK to the Proxy.
## How to run the Proxy via Docker {#run-proxy-via-docker}
We provide a [Docker image (available on on Docker Hub)](https://hub.docker.com/r/unleashorg/unleash-proxy) that you can use to run the proxy.
### 1. Pull the Proxy image
Use the `docker` command to pull the Proxy image:
```bash title="Pull the Unleash Proxy docker image"
docker pull unleashorg/unleash-proxy
```
### 2. Start the Proxy
When running the Proxy, you'll need to provide it with at least the configuration options listed below. Check the reference docs for the [full list of configuration options](../reference/unleash-proxy.md#configuration-options).
```bash title="Run the Unleash Proxy via Docker"
docker run \
-e UNLEASH_PROXY_CLIENT_KEYS=<proxy-client-key> \
-e UNLEASH_URL='<unleash-api-url>' \
-e UNLEASH_API_TOKEN=<client-api-token> \
-p 3000:3000 \
unleashorg/unleash-proxy
```
If the proxy starts up successfully, you should see the following output:
```bash
Unleash-proxy is listening on port 3000!
```
## How to run the Proxy as a Node.js app {#run-proxy-as-node-app}
To run the Proxy via Node.js, you'll have to create your own Node.js project and use the Unleash Proxy as a dependency.
### 1. initialize the project
If you don't already have an existing Node.js project, create one:
```bash npm2yarn
npm init
```
### 2. Install the Unleash Proxy package
Install the Unleash Proxy as a dependency:
```shell npm2yarn
npm install @unleash/proxy
```
### 3. Configure and start the proxy
Import the `createApp` function from `@unleash/proxy` and configure the proxy. You'll need to provide at least the configuration options highlighted below. Check the reference docs for the [full list of configuration options](../reference/unleash-proxy.md#configuration-options).
Here is an example of what running the Proxy as a Node.js app might look like:
```js title="Sample app running the Unleash Proxy"
const port = 3000;
const { createApp } = require('@unleash/proxy');
const app = createApp({
// highlight-start
unleashUrl: '<unleash-api-url>',
unleashApiToken: '<client-api-token>',
clientKeys: ['<proxy-client-key>'],
proxyPort: 3000,
// highlight-end
});
app.listen(port, () =>
console.log(`Unleash Proxy listening on http://localhost:${port}/proxy`),
);
```
## Verify that the proxy is working
When the proxy process has started up correctly, you can start querying its `/proxy` endpoint. If it's running correctly, you'll get back a JSON object with a list of toggles. The list may be empty if you haven't added any toggles for the corresponding project/environment yet.
<ApiRequest verb="get" url="proxy" endpointType="proxy" title="Request toggles from the Unleash Proxy"/>