yt lee
623e05f250
Replaces manual H264/TCP stereo streaming with NVIDIA CloudXR for
higher-quality stereoscopic rendering and lower latency.
Changes:
- teleop_xr_agent.py: add --cloudxr flag (enables Isaac Sim XR mode,
disables manual StreamingManager)
- deps/cloudxr/: NVIDIA CloudXR.js SDK (Early Access) with Isaac Lab
teleop React web client
- deps/cloudxr/Dockerfile.wss.proxy: HAProxy WSS proxy for PICO 4 Ultra
HTTPS mode (routes wss://48322 → ws://49100)
- deps/cloudxr/isaac/webpack.dev.js: disable file watching to avoid
EMFILE errors with large node_modules
- deps/cloudxr/INSTALL.md: full setup guide
Usage:
# Start CloudXR Runtime + Isaac Lab
cd ~/IsaacLab && ./docker/container.py start \
--files docker-compose.cloudxr-runtime.patch.yaml \
--env-file .env.cloudxr-runtime
# Run teleop with CloudXR
~/IsaacLab/isaaclab.sh -p teleop_xr_agent.py \
--task Isaac-MindRobot-2i-DualArm-IK-Abs-v0 --cloudxr
# Serve web client
cd deps/cloudxr/isaac && npm run dev-server:https
48 lines
27 KiB
HTML
48 lines
27 KiB
HTML
<!DOCTYPE html><html class="default" lang="en" data-base=".."><head><meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>SessionDelegates | CloudXR.js SDK Documentation - v6.0.0-beta</title><meta name="description" content="Documentation for CloudXR.js SDK Documentation"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search"><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">CloudXR.js SDK Documentation - v6.0.0-beta</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../modules.html">CloudXR.js SDK Documentation</a></li><li><a href="../modules/CloudXR.html">CloudXR</a></li><li><a href="CloudXR.SessionDelegates.html">SessionDelegates</a></li></ul><h1>Interface SessionDelegates</h1></div><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography"><p>Defines callbacks for CloudXR session events.</p>
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<p>Applications implement these callbacks to receive notifications about
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session lifecycle events and WebGL state changes. All callbacks are optional.</p>
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</div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example" class="tsd-anchor"></a>Example<a href="#example" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-6">const</span><span class="hl-1"> </span><span class="hl-5">delegates</span><span class="hl-1">: </span><span class="hl-13">SessionDelegates</span><span class="hl-1"> = {</span><br/><span class="hl-1"> </span><span class="hl-0">onStreamStarted</span><span class="hl-4">:</span><span class="hl-1"> () </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">info</span><span class="hl-1">(</span><span class="hl-2">'CloudXR streaming started'</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-3">// Update UI to show streaming status</span><br/><span class="hl-1"> },</span><br/><span class="hl-1"> </span><span class="hl-0">onStreamStopped</span><span class="hl-4">:</span><span class="hl-1"> (</span><span class="hl-4">error</span><span class="hl-1">) </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-9">if</span><span class="hl-1"> (</span><span class="hl-4">error</span><span class="hl-1">) {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">error</span><span class="hl-1">(</span><span class="hl-2">'Streaming stopped due to error:'</span><span class="hl-1">, </span><span class="hl-4">error</span><span class="hl-1">);</span><br/><span class="hl-1"> } </span><span class="hl-9">else</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">info</span><span class="hl-1">(</span><span class="hl-2">'Streaming stopped normally'</span><span class="hl-1">);</span><br/><span class="hl-1"> }</span><br/><span class="hl-1"> }</span><br/><span class="hl-1">};</span>
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</code><button type="button">Copy</button></pre>
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</div></div></section><div class="tsd-signature"><span class="tsd-signature-keyword">interface</span> <span class="tsd-kind-interface">SessionDelegates</span> <span class="tsd-signature-symbol">{</span><br/> <a class="tsd-kind-property" href="CloudXR.SessionDelegates.html#onstreamstarted">onStreamStarted</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">;</span><br/> <a class="tsd-kind-property" href="CloudXR.SessionDelegates.html#onstreamstopped">onStreamStopped</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">error</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-type">Error</span><span class="tsd-signature-symbol">)</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">;</span><br/> <a class="tsd-kind-property" href="CloudXR.SessionDelegates.html#onwebglstatechangebegin">onWebGLStateChangeBegin</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">;</span><br/> <a class="tsd-kind-property" href="CloudXR.SessionDelegates.html#onwebglstatechangeend">onWebGLStateChangeEnd</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">;</span><br/> <a class="tsd-kind-property" href="CloudXR.SessionDelegates.html#onservermessagereceived">onServerMessageReceived</a><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">messageData</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Uint8Array</span><span class="tsd-signature-symbol">)</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">;</span><br/><span class="tsd-signature-symbol">}</span></div><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Properties</h3><div class="tsd-index-list"><a href="CloudXR.SessionDelegates.html#onstreamstarted" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>on<wbr/>Stream<wbr/>Started?</span></a>
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<a href="CloudXR.SessionDelegates.html#onstreamstopped" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>on<wbr/>Stream<wbr/>Stopped?</span></a>
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<a href="CloudXR.SessionDelegates.html#onwebglstatechangebegin" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>on<wbr/>WebGLState<wbr/>Change<wbr/>Begin?</span></a>
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<a href="CloudXR.SessionDelegates.html#onwebglstatechangeend" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>on<wbr/>WebGLState<wbr/>Change<wbr/>End?</span></a>
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<a href="CloudXR.SessionDelegates.html#onservermessagereceived" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Property"><use href="../assets/icons.svg#icon-1024"></use></svg><span>on<wbr/>Server<wbr/>Message<wbr/>Received?</span></a>
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</div></section></div></details></section></section><details class="tsd-panel-group tsd-member-group tsd-accordion" open><summary class="tsd-accordion-summary" data-key="section-Properties"><h2><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg> Properties</h2></summary><section><section class="tsd-panel tsd-member"><a id="onstreamstarted" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag">Optional</code><span>on<wbr/>Stream<wbr/>Started</span><a href="#onstreamstarted" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">onStreamStarted</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span></div><div class="tsd-comment tsd-typography"><p>Invoked when streaming connects successfully.</p>
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<p>Called when the session transitions to the Connected state
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and streaming is ready to begin. At this point, the session is ready for
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rendering and all WebGL resources have been initialized.</p>
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</div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example-1" class="tsd-anchor"></a>Example<a href="#example-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-8">onStreamStarted</span><span class="hl-1">: () </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">info</span><span class="hl-1">(</span><span class="hl-2">'Ready to render CloudXR content'</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-3">// Start your render loop here</span><br/><span class="hl-1">}</span>
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</code><button type="button">Copy</button></pre>
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</div></div></section><section class="tsd-panel tsd-member"><a id="onstreamstopped" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag">Optional</code><span>on<wbr/>Stream<wbr/>Stopped</span><a href="#onstreamstopped" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">onStreamStopped</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">error</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-type">Error</span><span class="tsd-signature-symbol">)</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span></div><div class="tsd-comment tsd-typography"><p>Invoked when streaming stops (either by client or server).</p>
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<p>Called when the session stops streaming, either due to
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a normal disconnection or an error condition. Check the error parameter
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to determine the reason for the stop.</p>
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</div><div class="tsd-type-declaration"><h4>Type declaration</h4><ul class="tsd-parameters"><li class="tsd-parameter-signature"><ul class="tsd-signatures"><li class="tsd-signature"><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">error</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-type">Error</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">void</span></li><li class="tsd-description"><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><code class="tsd-tag">Optional</code><span class="tsd-kind-parameter">error</span>: <span class="tsd-signature-type">Error</span></span><div class="tsd-comment tsd-typography"><p>Optional error object if streaming stopped due to an error.
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If undefined, the stop was intentional (e.g., disconnect() called).</p>
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</div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4></li></ul></li></ul></div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example-2" class="tsd-anchor"></a>Example<a href="#example-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-8">onStreamStopped</span><span class="hl-1">: (</span><span class="hl-4">error</span><span class="hl-1">) </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-9">if</span><span class="hl-1"> (</span><span class="hl-4">error</span><span class="hl-1">) {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">error</span><span class="hl-1">(</span><span class="hl-2">'Streaming error:'</span><span class="hl-1">, </span><span class="hl-4">error</span><span class="hl-1">.</span><span class="hl-4">message</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-3">// Handle error condition</span><br/><span class="hl-1"> } </span><span class="hl-9">else</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">info</span><span class="hl-1">(</span><span class="hl-2">'Streaming stopped normally'</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-3">// Handle normal disconnection</span><br/><span class="hl-1"> }</span><br/><span class="hl-1">}</span>
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</code><button type="button">Copy</button></pre>
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</div></div></section><section class="tsd-panel tsd-member"><a id="onwebglstatechangebegin" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag">Optional</code><span>on<wbr/>WebGLState<wbr/>Change<wbr/>Begin</span><a href="#onwebglstatechangebegin" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">onWebGLStateChangeBegin</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span></div><div class="tsd-comment tsd-typography"><p>Invoked before the session changes any WebGL state.</p>
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<p>Called before the session modifies WebGL state during
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rendering operations. Use this to save the current WebGL state if needed
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for your application's rendering pipeline.</p>
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</div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example-3" class="tsd-anchor"></a>Example<a href="#example-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-8">onWebGLStateChangeBegin</span><span class="hl-1">: () </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-3">// Save current WebGL state</span><br/><span class="hl-1"> </span><span class="hl-4">gl</span><span class="hl-1">.</span><span class="hl-0">bindFramebuffer</span><span class="hl-1">(</span><span class="hl-4">gl</span><span class="hl-1">.</span><span class="hl-5">FRAMEBUFFER</span><span class="hl-1">, </span><span class="hl-6">null</span><span class="hl-1">);</span><br/><span class="hl-1">}</span>
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</code><button type="button">Copy</button></pre>
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</div></div></section><section class="tsd-panel tsd-member"><a id="onwebglstatechangeend" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag">Optional</code><span>on<wbr/>WebGLState<wbr/>Change<wbr/>End</span><a href="#onwebglstatechangeend" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">onWebGLStateChangeEnd</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">()</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span></div><div class="tsd-comment tsd-typography"><p>Invoked after the session changes any WebGL state.</p>
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<p>Called after the session has completed its WebGL state
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modifications during rendering operations. Use this to restore any WebGL
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state that your application needs.</p>
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</div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example-4" class="tsd-anchor"></a>Example<a href="#example-4" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-8">onWebGLStateChangeEnd</span><span class="hl-1">: () </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-3">// Restore WebGL state</span><br/><span class="hl-1"> </span><span class="hl-4">gl</span><span class="hl-1">.</span><span class="hl-0">bindFramebuffer</span><span class="hl-1">(</span><span class="hl-4">gl</span><span class="hl-1">.</span><span class="hl-5">FRAMEBUFFER</span><span class="hl-1">, </span><span class="hl-4">myFramebuffer</span><span class="hl-1">);</span><br/><span class="hl-1">}</span>
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</code><button type="button">Copy</button></pre>
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</div></div></section><section class="tsd-panel tsd-member"><a id="onservermessagereceived" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag">Optional</code><span>on<wbr/>Server<wbr/>Message<wbr/>Received</span><a href="#onservermessagereceived" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">onServerMessageReceived</span><span class="tsd-signature-symbol">?:</span> <span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">messageData</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Uint8Array</span><span class="tsd-signature-symbol">)</span> <span class="tsd-signature-symbol">=></span> <span class="tsd-signature-type">void</span></div><div class="tsd-comment tsd-typography"><p>Invoked when a server message is received through any opaque data channel.</p>
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</div><div class="tsd-type-declaration"><h4>Type declaration</h4><ul class="tsd-parameters"><li class="tsd-parameter-signature"><ul class="tsd-signatures"><li class="tsd-signature"><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">messageData</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">Uint8Array</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">void</span></li><li class="tsd-description"><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">messageData</span>: <span class="tsd-signature-type">Uint8Array</span></span><div class="tsd-comment tsd-typography"><p>Raw message data from the server</p>
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</div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4></li></ul></li></ul></div><div class="tsd-comment tsd-typography"><div class="tsd-tag-example"><h4 class="tsd-anchor-link"><a id="example-5" class="tsd-anchor"></a>Example<a href="#example-5" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h4><pre><code class="typescript"><span class="hl-8">onServerMessageReceived</span><span class="hl-1">: (</span><span class="hl-4">messageData</span><span class="hl-1">) </span><span class="hl-6">=></span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">const</span><span class="hl-1"> </span><span class="hl-5">messageString</span><span class="hl-1"> = </span><span class="hl-6">new</span><span class="hl-1"> </span><span class="hl-0">TextDecoder</span><span class="hl-1">().</span><span class="hl-0">decode</span><span class="hl-1">(</span><span class="hl-4">messageData</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">'Received message:'</span><span class="hl-1">, </span><span class="hl-4">messageString</span><span class="hl-1">);</span><br/><br/><span class="hl-1"> </span><span class="hl-3">// Parse JSON if expected</span><br/><span class="hl-1"> </span><span class="hl-9">try</span><span class="hl-1"> {</span><br/><span class="hl-1"> </span><span class="hl-6">const</span><span class="hl-1"> </span><span class="hl-5">message</span><span class="hl-1"> = </span><span class="hl-5">JSON</span><span class="hl-1">.</span><span class="hl-0">parse</span><span class="hl-1">(</span><span class="hl-4">messageString</span><span class="hl-1">);</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">'Parsed message:'</span><span class="hl-1">, </span><span class="hl-4">message</span><span class="hl-1">);</span><br/><span class="hl-1"> } </span><span class="hl-9">catch</span><span class="hl-1"> (</span><span class="hl-4">error</span><span class="hl-1">) {</span><br/><span class="hl-1"> </span><span class="hl-4">console</span><span class="hl-1">.</span><span class="hl-0">log</span><span class="hl-1">(</span><span class="hl-2">'Raw binary data:'</span><span class="hl-1">, </span><span class="hl-4">messageData</span><span class="hl-1">);</span><br/><span class="hl-1"> }</span><br/><span class="hl-1">}</span>
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</code><button type="button">Copy</button></pre>
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