[e2e] question about ECN implementation ?

[Guy Kaminitz]

Hi,

The question is about the TCP ECN algorithm.

Does someone know how a TCP receiver responds to a CE IP code that comes in a packet that has the CWR flag set in the TCP header?
Means, should the receiver continue sending the ECN-echo bit set, and ignore the CWR flag, or the opposite, ignore the CE flag in the IP and reset the ECN-echo flag?
Should the receiver send a CWR TCP header with the ECT(0) or ECT(1) bit set ? If not, it solves the small detail I encountered.

Thank,
Guy Kaminitz