摘要：
Reset Segments A segment hav- ing this bit set to “on” is called a “reset segment” or simply a “reset.” In general, a reset is sent by TCP whenever a 阅读全文
摘要：
When initialized, TCP starts in the CLOSED state. Usually an imme- diate transition takes it to either the SYN_SENT or LISTEN state, depending on whet 阅读全文