(This seems eerily similar to my previous issue: Web SDK attempting to connect to invalid DNS names)
Meeting SDK Type and Version
Web 2.6.0
Description
Starting today (2022-10-02) around 18:49Z, we started seeing a high frequency of ERR_ADDRESS_UNREACHABLE
errors from the Web SDK failing to connect to the client websocket.
Unlike my previous issue, this doesn’t not appear to be a DNS issues (the domains have a valid A record) but instead an issue with the server on the domain. The following domains have caused the error so far:
zoomiad206247100129rwg.iad.zoom.us
zoomiad206247100130rwg.iad.zoom.us
zoomiad206247100131rwg.iad.zoom.us
zoomiad206247100132rwg.iad.zoom.us
zoomiad206247100133rwg.iad.zoom.us
zoomiad206247100134rwg.iad.zoom.us
zoomiad206247100135rwg.iad.zoom.us
zoomiad206247100136rwg.iad.zoom.us
zoomiad206247100137rwg.iad.zoom.us
zoomiad206247100138rwg.iad.zoom.us
zoomiad206247100139rwg.iad.zoom.us
zoomiad206247100140rwg.iad.zoom.us
zoomiad206247100141rwg.iad.zoom.us
zoomiad206247100142rwg.iad.zoom.us
zoomiad206247100143rwg.iad.zoom.us
As best as I can tell, there is just not server responding to requests on these domains.
Testing one of the domains my client attempts to use locally:
$ wscat -c wss://zoomsjc1441959728rwg.sjc.zoom.us/wc/api
connected (press CTRL+C to quit)
< {"evt":0,"seq":0,"body":{"test":"welcome to zoom!"}}
< {"evt":0,"seq":1,"body":{"status":"READY"}}
< {"evt":0,"seq":0,"body":{"test":"invalid parameters!"}}
disconnected (code: 1006)
vs one of these problem domains:
$ wscat -c wss://zoomiad206247100129rwg.iad.zoom.us/wc/api
error: connect ECONNREFUSED 206.247.100.129:443
Error?
We see this (redacted) error in the browser console:
WebSocket connection to 'wss://zoomiad206247100129rwg.iad.zoom.us/wc/api/XXX?...' failed: Error in connection establishment: net::ERR_ADDRESS_UNREACHABLE