# Class: ProxyAgent

Extends: `undici.Dispatcher`

A Proxy Agent class that implements the Agent API. It allows the connection through proxy in a simple way.

## `new ProxyAgent([options])`

Arguments:

* **options** `ProxyAgentOptions` (required) - It extends the `Agent` options.

Returns: `ProxyAgent`

### Parameter: `ProxyAgentOptions`

Extends: [`AgentOptions`](Agent.md#parameter-agentoptions)

* **uri** `string | URL` (required) - The URI of the proxy server.  This can be provided as a string, as an instance of the URL class, or as an object with a `uri` property of type string.
If the `uri` is provided as a string or `uri` is an object with an `uri` property of type string, then it will be parsed into a `URL` object according to the [WHATWG URL Specification](https://url.spec.whatwg.org).
For detailed information on the parsing process and potential validation errors, please refer to the ["Writing" section](https://url.spec.whatwg.org/#writing) of the WHATWG URL Specification.
* **token** `string` (optional) - It can be passed by a string of token for authentication.
* **auth** `string` (**deprecated**) - Use token.
* **clientFactory** `(origin: URL, opts: Object) => Dispatcher` (optional) - Default: `(origin, opts) => new Pool(origin, opts)`
* **requestTls** `BuildOptions` (optional) - Options object passed when creating the underlying socket via the connector builder for the request. See [TLS](https://nodejs.org/api/tls.html#tlsconnectoptions-callback).
* **proxyTls** `BuildOptions` (optional) - Options object passed when creating the underlying socket via the connector builder for the proxy server. See [TLS](https://nodejs.org/api/tls.html#tlsconnectoptions-callback).

Examples:

```js
import { ProxyAgent } from 'undici'

const proxyAgent = new ProxyAgent('my.proxy.server')
// or
const proxyAgent = new ProxyAgent(new URL('my.proxy.server'))
// or
const proxyAgent = new ProxyAgent({ uri: 'my.proxy.server' })
```

#### Example - Basic ProxyAgent instantiation

This will instantiate the ProxyAgent. It will not do anything until registered as the agent to use with requests.

```js
import { ProxyAgent } from 'undici'

const proxyAgent = new ProxyAgent('my.proxy.server')
```

#### Example - Basic Proxy Request with global agent dispatcher

```js
import { setGlobalDispatcher, request, ProxyAgent } from 'undici'

const proxyAgent = new ProxyAgent('my.proxy.server')
setGlobalDispatcher(proxyAgent)

const { statusCode, body } = await request('http://localhost:3000/foo')

console.log('response received', statusCode) // response received 200

for await (const data of body) {
  console.log('data', data.toString('utf8')) // data foo
}
```

#### Example - Basic Proxy Request with local agent dispatcher

```js
import { ProxyAgent, request } from 'undici'

const proxyAgent = new ProxyAgent('my.proxy.server')

const {
  statusCode,
  body
} = await request('http://localhost:3000/foo', { dispatcher: proxyAgent })

console.log('response received', statusCode) // response received 200

for await (const data of body) {
  console.log('data', data.toString('utf8')) // data foo
}
```

#### Example - Basic Proxy Request with authentication

```js
import { setGlobalDispatcher, request, ProxyAgent } from 'undici';

const proxyAgent = new ProxyAgent({
  uri: 'my.proxy.server',
  // token: 'Bearer xxxx'
  token: `Basic ${Buffer.from('username:password').toString('base64')}`
});
setGlobalDispatcher(proxyAgent);

const { statusCode, body } = await request('http://localhost:3000/foo');

console.log('response received', statusCode); // response received 200

for await (const data of body) {
  console.log('data', data.toString('utf8')); // data foo
}
```

### `ProxyAgent.close()`

Closes the proxy agent and waits for registered pools and clients to also close before resolving.

Returns: `Promise<void>`

#### Example - clean up after tests are complete

```js
import { ProxyAgent, setGlobalDispatcher } from 'undici'

const proxyAgent = new ProxyAgent('my.proxy.server')
setGlobalDispatcher(proxyAgent)

await proxyAgent.close()
```

### `ProxyAgent.dispatch(options, handlers)`

Implements [`Agent.dispatch(options, handlers)`](Agent.md#parameter-agentdispatchoptions).

### `ProxyAgent.request(options[, callback])`

See [`Dispatcher.request(options [, callback])`](Dispatcher.md#dispatcherrequestoptions-callback).
