首页 > 其他 > 详细

TCP Control in Detail

时间:2020-05-12 19:15:00      阅读:45      评论:0      收藏:0      [点我收藏+]

Retransmission

TCP sets a timer when it sends data, and if the data is not acknowledged when the timer expires, a timeout or timer-based retransmission of data occurs. The timeout occurs after an interval called the retransmission timeout (RTO). It has another way of initiating a retransmission called fast retransmission or fast retransmit, which usually happens without any delay. Fast retransmit is based on inferring losses by noticing when TCP’s cumulative acknowledgment fails to advance in the ACKs received over time, or when ACKs carrying selective acknowledgment information (SACKs) indicate that out-of-order segments are present at the receiver. Generally speaking, when the sender believes that the receiver might be missing some data, a choice needs to be made between sending new (unsent) data and retransmitting.

Fast retransmit

技术分享图片

Flow Control and Window Management

技术分享图片
技术分享图片

TCP Control in Detail

原文:https://www.cnblogs.com/ToRapture/p/12877903.html

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!