[e2e] TCP friendly with variable packet size

[Abdelbasset Trad]

Hi,
in RFC 3448, the authors indicate that TCP-Friendly rate control 
mechanism should not be used for applications that vary their packet 
size instead of their packet rate in response to congestion.

Is this true for an application that varies the packet size after the 
estimation of the sending rate and keep this size fixed until the next
feedback report.

Thanks