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  • 0 Votes
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    barisB
    The usual culprit for socket.io issues is usually not having sticky sessions. Socket.io requires sticky sessions so requests from a client always go to the same backends.
  • 0 Votes
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    julianJ
    The common causes for a session mismatch error are usually one of the following: 1. Mis-configured URL parameter in your config.json file If you have a misconfigured url value in your config.json file, the cookie may be saved incorrectly (or not at all), causing a session mismatch error. Please ensure that the link you are accessing your site with and the url defined match. 2. Improper/malformed cookieDomain set in ACP Sometimes admins set this value without realising that they probably don't need to set it at all. The default is perfectly fine. This is what the config looks like: [image: VEhEQAREQgZgTkGjHvIPVPBEQAREQgfgQ+P8uQ0hcCNBYdwAAAABJRU5ErkJggg==] If this is set, you'll want to revert the setting by editing your database directly: Redis: hdel config cookieDomain MongoDB: db.objects.update({ _key: "config" }, { $set: "cookieDomain": "" }); 3. Missing X-Forwarded-Proto header from nginx/apache If you are using a reverse proxy, you will need to have nginx pass a header through to NodeBB so it correctly determines the correct cookie secure property. In nginx, you will need to add the directive like so: location / { ... proxy_set_header X-Forwarded-Proto $scheme; ... }