Commits on Nov 24, 2021

1. reverseproxy: Adjust defaults, document defaults …

   Related to some of the issues in #4245, a complaint about the proxy transport defaults not being properly documented in https://caddy.community/t/default-values-for-directives/14254/6.
   
   - Dug into the stdlib to find the actual defaults for some of the timeouts and buffer limits, documenting them in godoc so the JSON docs get them next release.
   
   - Moved the keep-alive and dial-timeout defaults from `reverseproxy.go` to `httptransport.go`. It doesn't make sense to set defaults in the proxy, because then any time the transport is configured with non-defaults, the keep-alive and dial-timeout defaults are lost!
   
   - Sped up the dial timeout from 10s to 3s, in practice it rarely makes sense to wait a whole 10s for dialing. A shorter timeout helps a lot with the load balancer retries, so using something lower helps with user experience.

   

   francislavoie committed Nov 24, 2021
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2. reverseproxy: Make keepalive interval configurable via Caddyfile

   

   francislavoie committed Nov 24, 2021
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3. fastcgi: DialTimeout default for fastcgi transport too

   

   francislavoie committed Nov 24, 2021
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