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# Create a Stream

POST https://YOUR_SPACE.signalwire.com/api/laml/2010-04-01/Accounts/{AccountSid}/Calls/{CallSid}/Streams
Content-Type: application/x-www-form-urlencoded

Starts sending selected audio tracks from an active call to a secure WebSocket endpoint. Use it for live call-audio processing; use [Conference Streams](/docs/compatibility-api/rest/conference-streams/create-conference-stream) for an entire voice conference or [Video Room Streams](/docs/apis/rest/video/streams/list-room-streams) for RTMP video broadcasts.

#### Permissions

The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_.

[Learn more about API scopes](/docs/platform/your-signalwire-api-space).

Reference: https://signalwire.com/docs/compatibility-api/rest/streams/create-stream

## Authentication

- `Authorization` header (basic auth, required) — SignalWire Basic Authentication using Project ID and API Token. The client sends HTTP requests with the Authorization header containing the word Basic followed by a space and a base64-encoded string of project_id:token. The project ID will be used as the username and the API token as the password. Example: ``` Authorization: Basic base64(project_id:token) ```

## Request

### Path parameters

- `AccountSid` (string, required) — The Project ID that uniquely identifies the Account.
- `CallSid` (string, required) — The unique identifier for the call.

### Body (application/x-www-form-urlencoded)

This endpoint expects a CreateCallStreamRequest.

- `Url` (string, required) — Absolute or relative URL. A WebSocket connection to the url will be established and audio will start flowing towards the Websocket server. The only supported protocol is wss. For security reasons ws is NOT supported.
- `Name` (string, optional) — Unique name for the Stream, per Call. It is used to stop a Stream by name.
- `Track` (enum, optional, default: both_tracks) — This attribute can be one of inbound_track, outbound_track, both_tracks. Default is `both_tracks`.
  - Allowed values: `inbound_track`, `outbound_track`, `both_tracks`
- `StatusCallbackMethod` (enum, optional, default: POST) — Whether the request to `StatusCallback` URL is a `GET` or a `POST`. Default is `POST`.
  - Allowed values: `GET`, `POST`
- `StatusCallback` (string, optional) — The URL to request to when stream is available.
- `Parameter1.Name` (string, optional) — Custom parameter name to pass towards the WebSocket server. You can pass up to 99 custom parameters using `Parameter1.Name` through `Parameter99.Name`.
- `Parameter1.Value` (string, optional) — Custom parameter value to pass towards the WebSocket server. You can pass up to 99 custom parameters using `Parameter1.Value` through `Parameter99.Value`.
- `Parameter2.Name` (string, optional) — Custom parameter name to pass towards the WebSocket server.
- `Parameter2.Value` (string, optional) — Custom parameter value to pass towards the WebSocket server.
- `AuthorizationBearerToken` (string, optional) — Bearer token for authorization with the WebSocket server.

## Response

### 200

The request has succeeded.

- `sid` (string, required) — The unique identifier for the stream.
- `account_sid` (string, required) — The unique identifier for the account.
- `call_sid` (string, required) — The unique identifier for the call.
- `name` (string, required) — The name of the stream.
- `status` (enum, required) — The status of the stream.
  - Allowed values: `queued`, `in-progress`, `stopped`
- `date_updated` (string, required) — The date, in RFC 2822 GMT format, this stream was updated.
- `uri` (string, required) — The URI for the stream.

## Errors

### 400 Bad Request Error

The request was invalid or cannot be processed. Check the error details for more information.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 401 Unauthorized Error

Authentication failed. Please verify your credentials and try again.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 404 Not Found Error

The requested resource was not found. Please verify the resource identifier.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 422 Unprocessable Entity Error

The request could not be processed due to validation errors. Check the error details for more information.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 503 Service Unavailable Error

The service is temporarily unavailable. Please try again later.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

## Examples

**Request**

```json
{
  "Url": "wss://your-application.com/audiostream"
}
```

**Response**

```json
{
  "sid": "b3877c40-da60-4998-90ad-b792e98472st",
  "account_sid": "b3877c40-da60-4998-90ad-b792e98472af",
  "call_sid": "b3877c40-da60-4998-90ad-b792e98472ca",
  "name": "my_first_stream",
  "status": "queued",
  "date_updated": "Wed, 19 Sep 2018 21:00:00 +0000",
  "uri": "/api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472af/Calls/b3877c40-da60-4998-90ad-b792e98472ca/Streams/b3877c40-da60-4998-90ad-b792e98472st.json"
}
```

**SDK Code**

```python
import requests

url = "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams"

payload = ""
headers = {
    "Content-Type": "application/x-www-form-urlencoded"
}

response = requests.post(url, data=payload, headers=headers, auth=("<project_id>", "<api_token>"))

print(response.json())
```

```javascript
const url = 'https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams';
const credentials = btoa("<project_id>:<api_token>");

const options = {
  method: 'POST',
  headers: {
    Authorization: `Basic ${credentials}`,
    'Content-Type': 'application/x-www-form-urlencoded'
  },
  body: new URLSearchParams('')
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams"

	req, _ := http.NewRequest("POST", url, nil)

	req.SetBasicAuth("<project_id>", "<api_token>")
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request.basic_auth("<project_id>", "<api_token>")
request["Content-Type"] = 'application/x-www-form-urlencoded'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams")
  .basicAuth("<project_id>", "<api_token>")
  .header("Content-Type", "application/x-www-form-urlencoded")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams', [
  'form_params' => null,
  'headers' => [
    'Content-Type' => 'application/x-www-form-urlencoded',
  ],
    'auth' => ['<project_id>', '<api_token>'],
]);

echo $response->getBody();
```

```csharp
using RestSharp;
using RestSharp.Authenticators;

var client = new RestClient("https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams");
client.Authenticator = new HttpBasicAuthenticator("<project_id>", "<api_token>");
var request = new RestRequest(Method.POST);

request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let credentials = Data("<project_id>:<api_token>".utf8).base64EncodedString()

let headers = [
  "Authorization": "Basic \(credentials)",
  "Content-Type": "application/x-www-form-urlencoded"
]

let request = NSMutableURLRequest(url: NSURL(string: "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Calls/CallSid/Streams")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```