# Mopidy-HTTP

Mopidy-HTTP is an extension that lets you control Mopidy through HTTP and WebSockets, for example from a web client. It is bundled with Mopidy and enabled by default.

When it is enabled it starts a web server at the port specified by the `http/port` config value.

Warning

As a simple security measure, the web server is by default only available from localhost. To make it available from other computers, change the `http/hostname` config value. Before you do so, note that the HTTP extension does not feature any form of user authentication or authorization. Anyone able to access the web server can use the full core API of Mopidy. Thus, you probably only want to make the web server available from your local network or place it behind a web proxy which takes care of user authentication. You have been warned.

## Hosting web clients

Mopidy-HTTP’s web server can also host Tornado apps or any static files, for example the HTML, CSS, JavaScript, and images needed for a web based Mopidy client. See HTTP server side API for how to make static files or server-side functionality from a Mopidy extension available through Mopidy’s web server.

If you’re making a web based client and want to do server side development using some other technology than Tornado, you are of course free to run your own web server and just use Mopidy’s web server to host the API endpoints. But, for clients implemented purely in JavaScript, letting Mopidy host the files is a simpler solution.

See HTTP JSON-RPC API for details on how to integrate with Mopidy over HTTP. If you’re looking for a web based client for Mopidy, go check out Web clients.

## Configuration

See Configuration for general help on configuring Mopidy.

    [http]
    enabled = true
    hostname = 127.0.0.1
    port = 6680
    zeroconf = Mopidy HTTP server on $hostname
    allowed_origins =
    csrf_protection = true
    default_app = mopidy

http/enabled

  If the HTTP extension should be enabled or not.

http/hostname

  Which address the HTTP server should bind to.

  `127.0.0.1`

    Listens only on the IPv4 loopback interface

  `::1`

    Listens only on the IPv6 loopback interface

  `0.0.0.0`

    Listens on all IPv4 interfaces

  `::`

    Listens on all interfaces, both IPv4 and IPv6

http/port

  Which TCP port the HTTP server should listen to.

http/zeroconf

  Name of the HTTP service when published through Zeroconf. The variables `$hostname` and `$port` can be used in the name.

  If set, the Zeroconf services `_http._tcp` and `_mopidy-http._tcp` will be published.

  Set to an empty string to disable Zeroconf for HTTP.

http/allowed_origins

  A list of domains allowed to perform Cross-Origin Resource Sharing (CORS) requests. This applies to both JSON-RPC and WebSocket requests. Values should be in the format `hostname:port`, should not specify any scheme and be separated by either a comma or newline. Additionally, the `port` should not be specified if it is the default (80 for http, 443 for https).

  Same-origin requests (i.e. requests from Mopidy’s web server) are always allowed and so you don’t need an entry for those. However, if your requests originate from a different web server, you will need to add an entry for that server in this list. For example, to allow requests from a web server at ‘http://my-web-client.example.com’ you would specify the entry ‘my-web-client.example.com’.

http/csrf_protection

  Enable the HTTP server’s protection against Cross-Site Request Forgery (CSRF) from both JSON-RPC and WebSocket requests.

  Disabling this will remove the requirement to set a `Content-Type: application/json` header for JSON-RPC POST requests. It will also disable all same-origin checks, effectively ignoring the `http/allowed_origins` config since requests from any origin will be allowed. Lastly, all `Access-Control-Allow-*` response headers will be suppressed.

  This config should only be disabled if you understand the security implications and require the HTTP server’s old behaviour.

http/default_app

  Redirect from the web server root to a specific web app instead of Mopidy’s default list of web apps. The value should be the name used by the extension when it registers its `http:static` or `http:app` extension points. By convention, this is the the extension’s `ext_name`.