cache purge: retry once with URI.encode

workers/purge_cache_worker.rb

@@ -18,11 +18,19 @@ class PurgeCacheWorker
       "http://#{proxy_ip}#{path}",
       Addressable::URI::CharacterClasses::QUERY
     )
+
+    retry_encoded = false
+
     begin
       RestClient::Request.execute method: :head, url: url, timeout: HTTP_TIMEOUT, headers: {
         host: URI::encode("#{username}.neocities.org"),
         cache_purge: '1'
       }
+    rescue URI::InvalidURIError
+      raise if retry_encoded == true
+      url = URI.encode url
+      retry_encoded = true
+      retry
     rescue RestClient::ResourceNotFound
     rescue RestClient::Forbidden
     end