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<!DOCTYPE html>
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<title>Quick fix - Johannes Olzem</title>
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<main>
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<h1>Johannes Olzem</h1>
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<blockquote>Less is more</blockquote>
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<h2>HomeAssistant not connecting over reverse proxy</h2>
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<p>
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Make sure you have enabled <em>Websockets Supports</em> or similar
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functionality in your reverse proxy client.<br><br>
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If you are getting a <em>400 Bad Request</em> error, find the
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HomeAssistant log file and look for the following error message:<br>
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<code>A request from a reverse proxy was received from 12.34.56.78, but
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your HTTP integration is not set-up for reverse proxies</code><br><br>
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In your <code>configuration.yaml</code> file, add the following lines:<br>
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<pre>
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http:<br>
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use_x_forwarded_for: true<br>
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trusted_proxies:<br>
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- 12.34.56.78 # The IP address from the error message
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</pre>
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</p>
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<h3>Explanation</h3>
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<p>
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HomeAssistant uses websockets to communicate with the browser.<br><br>
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If you are using a reverse proxy, the IP address of the incoming
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connection is not trusted and gets rejected by HomeAssistant.<br>
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</p>
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</main>
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<footer>
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© 2021 - <script>document.write(new Date().getFullYear())</script> Johannes Olzem
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<br>
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<small>This website is free software. You can redistribute and modify it under the terms of the GNU General Public License V3.</small>
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