【網絡實驗】TCP重傳時間的規律

兩臺Ubuntu Server，採用Cubic TCP協議通信。故意讓接收方丟棄iperf報文。

重傳時間分別爲1s，2s，4s，8s，16s，以此類推。

理論依據是RFC 6298，RTO的初始值設定爲1s 。參考2.1節內容：Until a round-trip time (RTT) measurement has been made for a segment sent between the sender and receiver, the sender SHOULD set RTO <- 1 second。超時加倍的依據在5.5節：When the retransmission timer expires, do the following: ... The host MUST set RTO <- RTO * 2 ("back off the timer").