caddy 2.0 setup reverse proxy

Use caddy 2.0 to build a reverse proxy for Disqus API. The URL of the API is：https://disqus.com/api/。

setup reverse_proxy

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reverse_proxy https://disqus.com { 
  header_up Host {upstream_hostport}
 }

setup rewrite
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rewrite * /api{path}
This step is because it needs to be forwarded to the api path。
setup disqus
websit:https://disqus.com/api/applications/***. Add the domain name of the reverse proxy server to Domains。
Verify reverse proxy
Verify whether the proxy setting is successful. You can access the proxy through a browser and check whether it will jump to this URL https://disqus.com/api/docs/。

Complete example

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www.example.com, 
:666 {
  tls ***@*mail.com
  rewrite * /api{path}
  reverse_proxy https://disqus.com {
    header_up Host {upstream_hostport}
#    header_up User-Custom-Domain {host}
#    header_down Access-Control-Allow-Origin  https://www.example.com
#    header_down Access-Control-Allow-Credentials=true
#    health_timeout 5s
#    transport http {
#      tls
#    }
  }
#  log {
#    output file /var/log/caddy/access.log
#  }
}