In some cases, you might see (Statistics > Session > Active Sessions > Proxied Sessions) the server bytes increasing even after the client has closed the connection. This can occur when a client requests a large object and aborts the download before receiving the entire object. The server bytes continue to increase because the ProxySG is retrieving the object for caching. You can change this behavior by enabling the bandwidth gain mode.
To enable the bandwidth gain mode:
1. Select Configuration > Proxy Settings > HTTP Proxy > Acceleration Profile.
2. Select Enable Bandwidth Gain Mode.
3. Click Apply.
Alternatively add the following policy: