Imports github.com/caddyserver/caddy/v2 github.com/caddyserver/caddy/v2/caddyconfig/caddyfile github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile github.com/caddyserver/caddy/v2/modules/caddyhttp Standard library imports bytes crypto/hmac crypto/sha256 encoding/base64 fmt io net/http strings time