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<h1>websocket_controller.sl</h1>
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<td class="line-num">1</td>
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<td class="code-content"><pre>// WebSocket controller - handles WebSocket demo</pre></td>
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<td class="line-num">2</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">3</td>
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<td class="code-content"><pre>// WebSocket handler - receives events: {type, connection_id, message?, channel?}</pre></td>
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<td class="line-num">4</td>
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<td class="code-content"><pre>// Returns: {broadcast: "msg"} to broadcast to all, {send: "msg"} to reply to sender</pre></td>
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<td class="line-num">5</td>
<td class="line-indicator">✗</td>
<td class="code-content"><pre>fn chat_handler(event: Any) -> Any {</pre></td>
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<td class="line-num">6</td>
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<td class="code-content"><pre> let event_type = event["type"];</pre></td>
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<td class="line-num">7</td>
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<td class="code-content"><pre> let connection_id = event["connection_id"];</pre></td>
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<td class="line-num">8</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">9</td>
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<td class="code-content"><pre> if (event_type == "connect") {</pre></td>
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<td class="line-num">10</td>
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<td class="code-content"><pre> return {</pre></td>
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<td class="line-num">11</td>
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<td class="code-content"><pre> "broadcast": "{\"type\":\"join\",\"user\":\"" + connection_id + "\"}"</pre></td>
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<td class="line-num">12</td>
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<td class="code-content"><pre> };</pre></td>
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<td class="line-num">13</td>
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<td class="code-content"><pre> }</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">15</td>
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<td class="code-content"><pre> if (event_type == "disconnect") {</pre></td>
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<td class="line-num">16</td>
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<td class="code-content"><pre> return {</pre></td>
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<td class="line-num">17</td>
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<td class="code-content"><pre> "broadcast": "{\"type\":\"leave\",\"user\":\"" + connection_id + "\"}"</pre></td>
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<td class="line-num">18</td>
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<td class="code-content"><pre> };</pre></td>
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<td class="line-num">19</td>
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<td class="code-content"><pre> }</pre></td>
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<td class="line-num">20</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">21</td>
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<td class="code-content"><pre> if (event_type == "message") {</pre></td>
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<td class="line-num">22</td>
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<td class="code-content"><pre> let message = event["message"];</pre></td>
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<td class="line-num">23</td>
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<td class="code-content"><pre> let parsed = json_parse(message);</pre></td>
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<td class="line-num">24</td>
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<td class="code-content"><pre> let text = parsed["text"];</pre></td>
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<td class="line-num">25</td>
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<td class="code-content"><pre> // Use "send" for echo (single client) instead of "broadcast" (all clients)</pre></td>
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<td class="line-num">26</td>
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<td class="code-content"><pre> return {</pre></td>
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<td class="line-num">27</td>
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<td class="code-content"><pre> "send": "{\"type\":\"echo\",\"text\":\"" + text + "\"}"</pre></td>
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<td class="line-num">28</td>
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<td class="code-content"><pre> };</pre></td>
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<td class="line-num">29</td>
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<td class="code-content"><pre> }</pre></td>
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<td class="line-num">30</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">31</td>
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<td class="code-content"><pre> return {};</pre></td>
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<td class="line-num">32</td>
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<td class="code-content"><pre>}</pre></td>
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<td class="line-num">33</td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">34</td>
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<td class="code-content"><pre>// Page to display the WebSocket demo</pre></td>
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<td class="line-num">35</td>
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<td class="code-content"><pre>fn demo(req: Any) -> Any {</pre></td>
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<td class="line-num">36</td>
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<td class="code-content"><pre> return render("websocket/demo", {</pre></td>
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<td class="line-num">37</td>
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<td class="code-content"><pre> "title": "WebSocket Demo"</pre></td>
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<td class="line-num">38</td>
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<td class="code-content"><pre> });</pre></td>
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<td class="line-num">39</td>
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<td class="code-content"><pre>}</pre></td>
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