连接状态标志
请问下面一个定义：
Flag： Normal or error status of the connection
然后举了些例子如：
S0 Connection attempt seen, no reply.
S1 Connection established, not terminated.
SF Normal establishment and termination. Note that this is the same symbol as for state S1. You can tell the two apart because for S1 there will not be any byte counts in the summary, while for SF there will be.
REJ Connection attempt rejected.
S2 Connection established and close attempt by originator seen (but no reply from responder).
S3 Connection established and close attempt by responder seen (but no reply from originator).
RSTO Connection established, originator aborted (sent a RST).
RSTR Established, responder aborted.
RSTOS0 Originator sent a SYN followed by a RST, we never saw a SYN-ACK from the responder.
RSTRH Responder sent a SYN ACK followed by a RST, we never saw a SYN from the (purported) originator.
SH Originator sent a SYN followed by a FIN, we never saw a SYN ACK from the responder (hence the connection was "half" open).
SHR Responder sent a SYN ACK followed by a FIN, we never saw a SYN from the originator.
OTH No SYN seen, just midstream traffic (a "partial connection" that was not later closed).
请问这些S0、S1、SF....是按标准来定义的吗？如果是，那是按什么标准来定义的？
我在网上搜不到，请知道的朋友能否说一下呢？在下不胜感激，谢谢！
