bereq.between_bytes_timeout

RTIME, can be read and set, but not unset.

Available inpassmiss

The between bytes timeout to the backend server.

When requests are relayed from one Fastly cache server to another (as a result of clustering or shielding) the timeout between bytes in effect on those connections is 60 seconds, and cannot be modified.

As a result, if a request is forwarded internally by Fastly before being forwarded to your backend server, the timeout between bytes is capped at 60 seconds.