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<article id="content">
<header>
<h1 class="title">Module <code>pyControl4.websocket</code></h1>
</header>
<section id="section-intro">
<p>Handles Websocket connections to a Control4 Director, allowing for real-time
updates using callbacks.</p>
</section>
<section>
</section>
<section>
</section>
<section>
</section>
<section>
<h2 class="section-title" id="header-classes">Classes</h2>
<dl>
<dt id="pyControl4.websocket.C4Websocket"><code class="flex name class">
<span>class <span class="ident">C4Websocket</span></span>
<span>(</span><span>ip: str,<br>session_no_verify_ssl: aiohttp.ClientSession | None = None,<br>connect_callback: Callable[..., Any] | None = None,<br>disconnect_callback: Callable[..., Any] | None = None)</span>
</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">class C4Websocket:
    def __init__(
        self,
        ip: str,
        session_no_verify_ssl: aiohttp.ClientSession | None = None,
        connect_callback: Callable[..., Any] | None = None,
        disconnect_callback: Callable[..., Any] | None = None,
    ):
        &#34;&#34;&#34;Creates a Control4 Websocket object.

        Parameters:
            `ip` - The IP address of the Control4 Director/Controller.

            `session_no_verify_ssl` - (Optional) Allows the use of an
                        `aiohttp.ClientSession` object
                        for all network requests. This
                        session will not be closed by the library.
                        If not provided, the library will open and
                        close its own `ClientSession`s as needed.
                        This session is also passed to the underlying
                        socketio/engineio client to avoid blocking
                        `ssl.create_default_context()` calls inside
                        the event loop.

            `connect_callback` - (Optional) A callback to be called when the
                Websocket connection is opened or reconnected after a network
                error.

            `disconnect_callback` - (Optional) A callback to be called when
                the Websocket connection is lost due to a network error.
        &#34;&#34;&#34;
        self.base_url: str = f&#34;https://{ip}&#34;
        self.wss_url: str = f&#34;wss://{ip}&#34;
        self.session: aiohttp.ClientSession | None = session_no_verify_ssl
        self.connect_callback: Callable[..., Any] | None = connect_callback
        self.disconnect_callback: Callable[..., Any] | None = disconnect_callback

        self._item_callbacks: dict[int, list[Callable[..., Any]]] = dict()
        self._sio: socketio.AsyncClient | None = None

    @property
    def item_callbacks(self) -&gt; MappingProxyType[int, list[Callable[..., Any]]]:
        &#34;&#34;&#34;Returns a read-only view of registered item ids (key) and their
        callbacks (value). Use add_item_callback() or remove_item_callback()
        to modify callbacks.
        &#34;&#34;&#34;
        return MappingProxyType(self._item_callbacks)

    def add_item_callback(self, item_id: int, callback: Callable[..., Any]) -&gt; None:
        &#34;&#34;&#34;Register a callback to receive updates about an item.
        Parameters:
            `item_id` - The Control4 item ID.
            `callback` - The callback to be called when an update is received
                for the provided item id.
        &#34;&#34;&#34;
        _LOGGER.debug(&#34;Subscribing to updates for item id: %s&#34;, item_id)

        if item_id not in self._item_callbacks:
            self._item_callbacks[item_id] = []

        # Avoid duplicates
        if callback not in self._item_callbacks[item_id]:
            self._item_callbacks[item_id].append(callback)

    def remove_item_callback(
        self, item_id: int, callback: Callable[..., Any] | None = None
    ) -&gt; None:
        &#34;&#34;&#34;Unregister callback(s) for an item.
        Parameters:
            `item_id` - The Control4 item ID.
            `callback` - (Optional) Specific callback to remove. If None,
                removes all callbacks for this item_id.
        &#34;&#34;&#34;
        if item_id not in self._item_callbacks:
            return

        if callback is None:
            # Remove all callbacks for this item_id
            del self._item_callbacks[item_id]
        else:
            # Remove a specific callback
            try:
                self._item_callbacks[item_id].remove(callback)
                # If no more callbacks, remove the entry
                if not self._item_callbacks[item_id]:
                    del self._item_callbacks[item_id]
            except ValueError:
                pass

    async def sio_connect(self, director_bearer_token: str) -&gt; None:
        &#34;&#34;&#34;Start WebSockets connection and listen, using the provided
        director_bearer_token to authenticate with the Control4 Director. If a
        connection already exists, it will be disconnected and a new connection
        will be created.

        This function should be called using a new token every 86400 seconds (the
        expiry time of the director tokens), otherwise the Control4 Director will
        stop sending WebSocket messages.

        Parameters:
            `director_bearer_token` - The bearer token used to authenticate
                with the Director. See
                `pyControl4.account.C4Account.get_director_bearer_token`
                for how to get this.
        &#34;&#34;&#34;
        # Disconnect previous sio object
        await self.sio_disconnect()

        if self.session is not None:
            # Create a new session using the caller&#39;s connector so engineio
            # can safely close it in _reset() without affecting the caller&#39;s
            # session.  Setting ssl_verify=True prevents engineio from
            # creating its own no-verify SSLContext, allowing the
            # connector&#39;s SSL configuration to take effect.
            http_session = aiohttp.ClientSession(
                connector=self.session.connector, connector_owner=False
            )
            self._sio = socketio.AsyncClient(ssl_verify=True, http_session=http_session)
        else:
            self._sio = socketio.AsyncClient(ssl_verify=False)
        self._sio.register_namespace(
            _C4DirectorNamespace(
                token=director_bearer_token,
                url=self.base_url,
                callback=self._callback,
                session=self.session,
                connect_callback=self.connect_callback,
                disconnect_callback=self.disconnect_callback,
            )
        )
        await self._sio.connect(
            self.wss_url,
            transports=[&#34;websocket&#34;],
            headers={&#34;JWT&#34;: director_bearer_token},
        )

    async def sio_disconnect(self) -&gt; None:
        &#34;&#34;&#34;Disconnects the WebSockets connection, if it has been created.&#34;&#34;&#34;
        if isinstance(self._sio, socketio.AsyncClient):
            await self._sio.disconnect()

    async def _callback(self, message: Any) -&gt; None:
        if &#34;status&#34; in message:
            _LOGGER.debug(f&#39;Subscription {message[&#34;status&#34;]}&#39;)
            return
        if isinstance(message, list):
            for m in message:
                await self._process_message(m)
        else:
            await self._process_message(message)

    async def _process_message(self, message: Any) -&gt; None:
        &#34;&#34;&#34;Process an incoming event message.&#34;&#34;&#34;
        _LOGGER.debug(message)
        device_id = message.get(&#34;iddevice&#34;) if isinstance(message, dict) else None
        if device_id is None:
            _LOGGER.debug(&#34;Received message without iddevice field&#34;)
            return

        callbacks = self._item_callbacks.get(device_id, [])
        if not callbacks:
            _LOGGER.debug(f&#34;No Callback for device id {device_id}&#34;)
            return

        for callback in callbacks[:]:
            try:
                if isinstance(message, list):
                    for m in message:
                        await callback(device_id, m)
                else:
                    await callback(device_id, message)
            except Exception as exc:
                _LOGGER.warning(f&#34;Captured exception during callback: {str(exc)}&#34;)</code></pre>
</details>
<div class="desc"><p>Creates a Control4 Websocket object.</p>
<h2 id="parameters">Parameters</h2>
<p><code>ip</code> - The IP address of the Control4 Director/Controller.</p>
<p><code>session_no_verify_ssl</code> - (Optional) Allows the use of an
<code>aiohttp.ClientSession</code> object
for all network requests. This
session will not be closed by the library.
If not provided, the library will open and
close its own <code>ClientSession</code>s as needed.
This session is also passed to the underlying
socketio/engineio client to avoid blocking
<code>ssl.create_default_context()</code> calls inside
the event loop.</p>
<p><code>connect_callback</code> - (Optional) A callback to be called when the
Websocket connection is opened or reconnected after a network
error.</p>
<p><code>disconnect_callback</code> - (Optional) A callback to be called when
the Websocket connection is lost due to a network error.</p></div>
<h3>Instance variables</h3>
<dl>
<dt id="pyControl4.websocket.C4Websocket.item_callbacks"><code class="name">prop <span class="ident">item_callbacks</span> : MappingProxyType[int, list[Callable[..., Any]]]</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">@property
def item_callbacks(self) -&gt; MappingProxyType[int, list[Callable[..., Any]]]:
    &#34;&#34;&#34;Returns a read-only view of registered item ids (key) and their
    callbacks (value). Use add_item_callback() or remove_item_callback()
    to modify callbacks.
    &#34;&#34;&#34;
    return MappingProxyType(self._item_callbacks)</code></pre>
</details>
<div class="desc"><p>Returns a read-only view of registered item ids (key) and their
callbacks (value). Use add_item_callback() or remove_item_callback()
to modify callbacks.</p></div>
</dd>
</dl>
<h3>Methods</h3>
<dl>
<dt id="pyControl4.websocket.C4Websocket.add_item_callback"><code class="name flex">
<span>def <span class="ident">add_item_callback</span></span>(<span>self, item_id: int, callback: Callable[..., Any]) ‑> None</span>
</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def add_item_callback(self, item_id: int, callback: Callable[..., Any]) -&gt; None:
    &#34;&#34;&#34;Register a callback to receive updates about an item.
    Parameters:
        `item_id` - The Control4 item ID.
        `callback` - The callback to be called when an update is received
            for the provided item id.
    &#34;&#34;&#34;
    _LOGGER.debug(&#34;Subscribing to updates for item id: %s&#34;, item_id)

    if item_id not in self._item_callbacks:
        self._item_callbacks[item_id] = []

    # Avoid duplicates
    if callback not in self._item_callbacks[item_id]:
        self._item_callbacks[item_id].append(callback)</code></pre>
</details>
<div class="desc"><p>Register a callback to receive updates about an item.</p>
<h2 id="parameters">Parameters</h2>
<p><code>item_id</code> - The Control4 item ID.
<code>callback</code> - The callback to be called when an update is received
for the provided item id.</p></div>
</dd>
<dt id="pyControl4.websocket.C4Websocket.remove_item_callback"><code class="name flex">
<span>def <span class="ident">remove_item_callback</span></span>(<span>self, item_id: int, callback: Callable[..., Any] | None = None) ‑> None</span>
</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def remove_item_callback(
    self, item_id: int, callback: Callable[..., Any] | None = None
) -&gt; None:
    &#34;&#34;&#34;Unregister callback(s) for an item.
    Parameters:
        `item_id` - The Control4 item ID.
        `callback` - (Optional) Specific callback to remove. If None,
            removes all callbacks for this item_id.
    &#34;&#34;&#34;
    if item_id not in self._item_callbacks:
        return

    if callback is None:
        # Remove all callbacks for this item_id
        del self._item_callbacks[item_id]
    else:
        # Remove a specific callback
        try:
            self._item_callbacks[item_id].remove(callback)
            # If no more callbacks, remove the entry
            if not self._item_callbacks[item_id]:
                del self._item_callbacks[item_id]
        except ValueError:
            pass</code></pre>
</details>
<div class="desc"><p>Unregister callback(s) for an item.</p>
<h2 id="parameters">Parameters</h2>
<p><code>item_id</code> - The Control4 item ID.
<code>callback</code> - (Optional) Specific callback to remove. If None,
removes all callbacks for this item_id.</p></div>
</dd>
<dt id="pyControl4.websocket.C4Websocket.sio_connect"><code class="name flex">
<span>async def <span class="ident">sio_connect</span></span>(<span>self, director_bearer_token: str) ‑> None</span>
</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">async def sio_connect(self, director_bearer_token: str) -&gt; None:
    &#34;&#34;&#34;Start WebSockets connection and listen, using the provided
    director_bearer_token to authenticate with the Control4 Director. If a
    connection already exists, it will be disconnected and a new connection
    will be created.

    This function should be called using a new token every 86400 seconds (the
    expiry time of the director tokens), otherwise the Control4 Director will
    stop sending WebSocket messages.

    Parameters:
        `director_bearer_token` - The bearer token used to authenticate
            with the Director. See
            `pyControl4.account.C4Account.get_director_bearer_token`
            for how to get this.
    &#34;&#34;&#34;
    # Disconnect previous sio object
    await self.sio_disconnect()

    if self.session is not None:
        # Create a new session using the caller&#39;s connector so engineio
        # can safely close it in _reset() without affecting the caller&#39;s
        # session.  Setting ssl_verify=True prevents engineio from
        # creating its own no-verify SSLContext, allowing the
        # connector&#39;s SSL configuration to take effect.
        http_session = aiohttp.ClientSession(
            connector=self.session.connector, connector_owner=False
        )
        self._sio = socketio.AsyncClient(ssl_verify=True, http_session=http_session)
    else:
        self._sio = socketio.AsyncClient(ssl_verify=False)
    self._sio.register_namespace(
        _C4DirectorNamespace(
            token=director_bearer_token,
            url=self.base_url,
            callback=self._callback,
            session=self.session,
            connect_callback=self.connect_callback,
            disconnect_callback=self.disconnect_callback,
        )
    )
    await self._sio.connect(
        self.wss_url,
        transports=[&#34;websocket&#34;],
        headers={&#34;JWT&#34;: director_bearer_token},
    )</code></pre>
</details>
<div class="desc"><p>Start WebSockets connection and listen, using the provided
director_bearer_token to authenticate with the Control4 Director. If a
connection already exists, it will be disconnected and a new connection
will be created.</p>
<p>This function should be called using a new token every 86400 seconds (the
expiry time of the director tokens), otherwise the Control4 Director will
stop sending WebSocket messages.</p>
<h2 id="parameters">Parameters</h2>
<p><code>director_bearer_token</code> - The bearer token used to authenticate
with the Director. See
<code><a title="pyControl4.account.C4Account.get_director_bearer_token" href="account.html#pyControl4.account.C4Account.get_director_bearer_token">C4Account.get_director_bearer_token()</a></code>
for how to get this.</p></div>
</dd>
<dt id="pyControl4.websocket.C4Websocket.sio_disconnect"><code class="name flex">
<span>async def <span class="ident">sio_disconnect</span></span>(<span>self) ‑> None</span>
</code></dt>
<dd>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">async def sio_disconnect(self) -&gt; None:
    &#34;&#34;&#34;Disconnects the WebSockets connection, if it has been created.&#34;&#34;&#34;
    if isinstance(self._sio, socketio.AsyncClient):
        await self._sio.disconnect()</code></pre>
</details>
<div class="desc"><p>Disconnects the WebSockets connection, if it has been created.</p></div>
</dd>
</dl>
</dd>
</dl>
</section>
</article>
<nav id="sidebar">
<div class="toc">
<ul></ul>
</div>
<ul id="index">
<li><h3>Super-module</h3>
<ul>
<li><code><a title="pyControl4" href="index.html">pyControl4</a></code></li>
</ul>
</li>
<li><h3><a href="#header-classes">Classes</a></h3>
<ul>
<li>
<h4><code><a title="pyControl4.websocket.C4Websocket" href="#pyControl4.websocket.C4Websocket">C4Websocket</a></code></h4>
<ul class="">
<li><code><a title="pyControl4.websocket.C4Websocket.add_item_callback" href="#pyControl4.websocket.C4Websocket.add_item_callback">add_item_callback</a></code></li>
<li><code><a title="pyControl4.websocket.C4Websocket.item_callbacks" href="#pyControl4.websocket.C4Websocket.item_callbacks">item_callbacks</a></code></li>
<li><code><a title="pyControl4.websocket.C4Websocket.remove_item_callback" href="#pyControl4.websocket.C4Websocket.remove_item_callback">remove_item_callback</a></code></li>
<li><code><a title="pyControl4.websocket.C4Websocket.sio_connect" href="#pyControl4.websocket.C4Websocket.sio_connect">sio_connect</a></code></li>
<li><code><a title="pyControl4.websocket.C4Websocket.sio_disconnect" href="#pyControl4.websocket.C4Websocket.sio_disconnect">sio_disconnect</a></code></li>
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