pleroma/installation/caddyfile-pleroma.example

social.domain.tld  {
  log /var/log/caddy/pleroma_access.log
  errors /var/log/caddy/pleroma_error.log

  gzip

  proxy / localhost:4000 {
    websocket
    transparent
  }

  tls user@domain.tld {
    # Remove the rest of the lines in here, if you want to support older devices
    key_type p256
    ciphers ECDHE-ECDSA-WITH-CHACHA20-POLY1305 ECDHE-RSA-WITH-CHACHA20-POLY1305 ECDHE-ECDSA-AES256-GCM-SHA384 ECDHE-RSA-AES256-GCM-SHA384 ECDHE-ECDSA-AES128-GCM-SHA256 ECDHE-RSA-AES128-GCM-SHA256
  }

  header / {
    X-XSS-Protection "1; mode=block"
    X-Frame-Options "DENY"
    X-Content-Type-Options "nosniff"
    Referrer-Policy "same-origin"
    Strict-Transport-Security "max-age=31536000; includeSubDomains;"
    Expect-CT "enforce, max-age=2592000"
    Content-Security-Policy "default-src 'none'; base-uri 'self'; form-action 'self'; img-src 'self' data: https:; media-src 'self' https:; style-src 'self' 'unsafe-inline'; font-src 'self'; script-src 'self'; connect-src 'self' wss://social.domain.tld; upgrade-insecure-requests;"
  }

  # If you do not want remote frontends to be able to access your Pleroma backend server, remove these lines.
  # If you want to allow all origins access, remove the origin lines.
  # To use this directive, you need the http.cors plugin for Caddy.
  cors / {
    origin https://halcyon.domain.tld
    origin https://pinafore.domain.tld
    methods POST,PUT,DELETE,GET,PATCH,OPTIONS
    allowed_headers Authorization,Content-Type,Idempotency-Key
    exposed_headers Link,X-RateLimit-Reset,X-RateLimit-Limit,X-RateLimit-Remaining,X-Request-Id
  }
  # Stop removing lines here.

  # If you do not want to use the mediaproxy function, remove these lines.
  # To use this directive, you need the http.cache plugin for Caddy.
  cache {
    match_path /proxy
    default_max_age 720m
  }
  # Stop removing lines here.
}