###### tags: `Networking` # TCP ![](https://i.imgur.com/9aulwy7.png) Gmail:aa098933967901@gmail.com 國立金門大學 資工一 侯智晟 ## UDP ![](https://i.imgur.com/ykZ8TuY.png) ## TCP ![](https://i.imgur.com/ISfQnQV.png) ### problems ![](https://i.imgur.com/zVVC8tb.png) ### End to end issus ![](https://i.imgur.com/GQzlRsf.png) ### segment ![](https://i.imgur.com/jccK2m7.png) ### TCP header ## TCP connection mangement ### Establish connection ![](https://i.imgur.com/5DP5021.png) ![](https://i.imgur.com/bo2uyZx.png) ![](https://i.imgur.com/ssMjKjx.png) #### diagram state ##### client ![](https://i.imgur.com/2Mo5g1q.png) ##### server ![](https://i.imgur.com/oINZi70.png) ## Retransmission ### Timeout/RTT ![](https://i.imgur.com/JICkDQx.png) ### Problems ![](https://i.imgur.com/K34CoTc.png) ### scenario #### lost ACK ![](https://i.imgur.com/fgrGlmO.png) #### delay ACK ![](https://i.imgur.com/w19rXmT.png) #### cumulate ACK ![](https://i.imgur.com/5VCkOOL.png) ### TCP　fate retransmission ![](https://i.imgur.com/QemNGFE.png) ## TCP congestion control ### Additive increase multiplication decrease(AIMD) ![](https://i.imgur.com/KPCSBY7.png) ### liner increase ![](https://i.imgur.com/FcCX8hs.png) ### exponetial increase ![](https://i.imgur.com/JTxSpAc.png) ## Summary ![](https://i.imgur.com/m0TXMHY.png) Gmail:aa098933967901@gmail.com