spike: proxy error on login [INS-4009]

[filfreire]

Closes, barely, INS-4009. hic sunt dracones

Some users will see the "Failed to Fetch" due to having a Proxy configured, either on their machines or on Insomnia Settings, which doesn't seem to work well with InsomniaFetch during login or the whoami call. One extra hypothesis, untested, is that some users might be facing problems due to CORS, not sure yet

I've tried capturing exception similar to ERR_PROXY_CONNECTION_FAILED but it gets swallowed by sentry instrumentation on fetch() function, regardless of what failure happens of fetch, it's swallowed with a TypeError: Failed to fetch.

By the time we try to capture a http status code, we always get the above exception.

Tried a handful of things to circunvent this but nothing seemed to work, e.g.

• using beforeSend on sentry on sentry config
• using ignoreErrors on sentry config
• filtering out Http from integrations on sentry config

Other related findings:

• Ability to ignore all network/fetch/xhr errors getsentry/sentry-javascript#6376
• https://forum.sentry.io/t/disabling-automatic-error-capturing-in-javascript-sdk/5039/2
• https://forum.sentry.io/t/typeerror-failed-to-fetch-reported-over-and-overe/8447

Useful steps to repro/test

• Set Proxy for http and https on insomnia settings with a value like localhost:8005 that will force the exception
• If you want to avoid having to re-login on every code-edit, you can use the electron console instead, manually try to send fetch() by hand to whoami endpoint or a url that doesn't exist.

await fetch('https://api.insomnia.rest/whoami').catch(error => {console.log(error)})

[jackkav]

Is the preferences panel visible during login in order for a user to respond to your message? And is insomnia proxy config the cause of this error? Could it also be system proxy?

[filfreire]

Is the preferences panel visible during login in order for a user to respond to your message? And is insomnia proxy config the cause of this error? Could it also be system proxy?

Preferences is visible by doing the keyboard shortcut - not good UX, perhaps a "link" that would open preferences would also help.

It can be either Insomnia proxy config and system proxy.

[jackkav]

Perhaps indicate the hot key and generalise the wording to compensate

[filfreire]

@jackkav added preferences button and changed the error text a bit: