An event indicating that the amount of bytes has been received from the network, such as after
receiving headers or reading raw response bytes. This includes localhost requests. Currently,
this is only implemented for HTTP transactions, and the amount of received bytes does not include
TLS overhead or TCP retransmits.
Returns the URL request associated with the response.
default int count()
Returns the number of bytes measured at the application layer that have been received over
the network for this request since the last time this event was called. It will always be
greater than 0 and will not include TLS overhead or TCP retransmits.