As note, for client browsers, there is a way to know their network problems. It's called "NEL" https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/NEL htt

As note, for client browsers, there is a way to know their network problems. It's called "NEL" https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/NEL https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/NE... An interesting usage from Wikimedia: https://www.usenix.org/sites/default/files/conference/protected-files/sre23amer_slides_danis_v2.pdf https://www.usenix.org/sites/default/files/conference/protec...