Create troubleshooting page in docs

[waldekmastykarz]

To help customers troubleshoot proxy not working as intended, we should create a page to which we can point to in-product, from issues, on social, etc.

The page should contain walk customers through the same troubleshooting steps that we'd take if we're to help them 1:1. Proposed structure:

Symptom: Proxy is not intercepting requests

• no requests intercepted
  • is proxy running
  • is it registered as system proxy
  • Have you configured correct url to watch
  • Are you using the right config file
  • Are you using proxy with a Node app
  • Are you using proxy with PowerShell on Windows

Symptom: Requests intercepted but passed through

Symptom: You get an SSL error in your app when using Dev Proxy:

• Do you have the proxy cert installed
• Is it trusted

[garrytrinder]

Nice idea.

How would folks get to the page and how would they know that it exists?

Are you thinking of a doctor command?

[waldekmastykarz]

To raise awareness of the page, we should do the following:

• have an aka link, eg. aka.ms/devproxy/help
• show the link when proxy starts
• show the link when folks invoke help on-demand Press 'h'/'?' to get troubleshooting information #586
• show the link on the issue template so that folks can debug proxy before they submit an issue

I'm not sure if a doctor command would help us automatically detect the things that need to be checked in order to determine what's wrong.