---
title: client.socket.tcpi_bytes_acked
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/variables/client-connection/client-socket-tcpi-bytes-acked
---

**Type:** INTEGER  
**Access:** read-only

**Available in:** recv, deliver, log, error

The number of bytes that have been sent to the client on the current
connection for which TCP acknowledgments have also been received.