Connection lost with external connections

General
1

I have NodeRed running with Docker (running on Windows, using Linux containers). When connecting to NodeRed with localhost:1880 everything works fine. NodeRed is connected to the www with Apache as webserver (running on windows). When trying to access NodeRed externally I can login and I can see my flows, but as soon as I'm displaying the page I get the message 'connection lost, trying to reconnect in x seconds'.

Any ideas what may cause this? I cannot find anything strange in the logfiles from NodeRed or Apache.

2

Most likely, you haven't proxied the websocket connections. There are examples in the forum and elsewhere on how to do that. You have to proxy both HTTPS and WSS.

3

Great, thanks for the quick reply. I googled a lot before asking the question and couldn't find anything. But apparently I was looking in the wrong direction. I added the next rows to my existing vhost in Apache to fix it:

RewriteEngine On
RewriteCond %{HTTP:Upgrade} =websocket [NC]
RewriteRule /kpn(.*) ws://localhost:1880$1 [P,L]
ProxyPreserveHost On
ProxyRequests Off
ProxyVia Off

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4

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