Caddyfile

{$DOMAIN:http://localhost} {
    # Redirect various old URL that have been now replaced:
    redir /toolkit / 308
    redir /toolkit/ / 308
    redir /mock / 308
    redir /mock/ / 308
    redir /view / 308
    redir /view/ / 308
    redir /docs/guides/subscription-faq/ /docs/faq/payments/ 308
    redir /docs/reference/mock-page/ /docs/reference/modify-page/ 308
    redir /docs/reference/amiusing.httptoolkit.tech/ /docs/reference/amiusing/ 308

    # Redirect old download paths to new ones
    @view-thankyou-subpath path_regexp subpath ^/view/thank-you/(.+)
    redir @view-thankyou-subpath /download/{re.subpath.1} 308
    @view-subpath path_regexp subpath ^/view/(.+)
    redir @view-subpath /{re.subpath.1} 308
    @mock-subpath path_regexp subpath ^/mock/(.+)
    redir @mock-subpath /{re.subpath.1} 308

    # Enforce trailing slashes
    @no_slash {
        not path_regexp ^/.+/$
        not path /

        not file {
            try_files {path}
        }
    }
    redir @no_slash {path}/ 301

    root * /site
    try_files {path}.html {path} {path}/index.html
    file_server
    encode zstd gzip

    # Cache GET responses for 10 minutes, validate async during next minute, or continue serving
    # old data as-is for up to 1 hour if this server stops responding/returns errors.
    @get method GET
    header @get Cache-Control "public, max-age=600, stale-while-revalidate=60, stale-if-error=3600"

    header X-Clacks-Overhead "GNU Terry Pratchett" # https://xclacksoverhead.org

    handle_errors {
        @404 `{err.status_code} == 404`
        rewrite @404 /404.html
        file_server
    }
}