We pull proxy settings from environment variables:
- HTTPS_PROXY for sending, profile pulls, and attachment download/upload
- WSS_PROXY for connecting to the websocket for receiving messages
- ALL_PROXY to provide one server for both
More details on our proxy handling:
- https://github.com/Rob--W/proxy-from-env#environment-variables
- https://github.com/TooTallNate/node-proxy-agent
This is the natural way of things for Linux. My understanding is that
most proxies on MacOS are system-wide and transparent, so it's not so
urgent. But Windows will likely require further UI for configuration.
Will need to do some testing with Windows users.
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