> For the complete documentation index, see [llms.txt](https://oten.gitbook.io/trust-support/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://oten.gitbook.io/trust-support/documentation/api-reference/integration-guidelines/reconnection.md).

# Reconnection

If the connection drops before receiving a `result` or `error` event, reconnect using the last received `id` as the `last_id` parameter:

`GET /api/v1/scan-url?url=https://seranking.com&lang=en&last_id=1775848028596-0`

This ensures you receive events that were emitted after the last successfully processed message.

**Reconnection strategy:**

1. Store the latest `id` from any `progress` event
2. On disconnect, wait with exponential backoff (1s, 2s, 4s, max 16s)
3. Reconnect with `last_id=<stored_id>`
4. Retry up to 5 times, then fail