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# WebSocket over Stream-based Endpoints
[Twisted Endpoints](http://twistedmatrix.com/documents/current/core/howto/endpoints.html) allow for creation of stream-oriented connections completely decoupled from creation of factories and protocols.
Using endpoints, you can create connections from [server descriptor strings](http://twistedmatrix.com/documents/13.2.0/api/twisted.internet.endpoints.serverFromString.html) or [client descriptor strings](http://twistedmatrix.com/documents/13.2.0/api/twisted.internet.endpoints.clientFromString.html) which can be provided via command line arguments.
**Autobahn**|Python now supports Twisted endpoints, and this allows you to speak WebSocket not only over
* TCPv4,
* TCPv6 and
* TLS,
but also over
* Unix domain sockets
* Pipes to talk to Processes (modulo [this](https://twistedmatrix.com/trac/ticket/5813))
* Serial (modulo [this](https://twistedmatrix.com/trac/ticket/4847))
and possible other endpoints. This is nifty and flexible.
> This example is about running WebSocket over different stream-based Twisted endpoints.
> **Autobahn**|Python also supports running any stream-based Twisted endpoint over WebSocket (which in turn runs over any stream-based underlying Twisted endpoint). Please see [here](https://github.com/crossbario/autobahn-python/tree/master/examples/twisted/websocket/wrapping).
>
## Running WebSocket over TCP
To run the echo server on TCP:
python server.py --websocket "tcp:9000"
To run the echo client over TCP:
python client.py --websocket "tcp:localhost:9000"
## Running WebSocket over Unix Domain Sockets
To run the echo server on a Unix domain socket:
python server.py --websocket "unix:/tmp/mywebsocket"
To run the echo client over the Unix domain socket:
python client.py --websocket "unix:path=/tmp/mywebsocket"
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