[tcpm] Re: Discussion on whether the TCP four-wave mechanism can be simplified to three-wave mechanism

["[e-mail]" <[e-mail]>]

I find the picture，When the server has no data to transmit, can the second and third waves be combined to reduce one wave? Because it has this delay mechanism, when there is data to be sent, it is sent, and there is no delay waiting. If something needs to be sent during the waiting period, can I do an ACK confirmation to send the merge?



---- Replied Message ----
| From | Yoshifumi Nishida<[e-mail]> |
| Date | 08/25/2024 15:34 |
| To | [e-mail] |
| Cc | tcpm<[e-mail]> |
| Subject | Re: [tcpm] Discussion on whether the TCP four-wave mechanism can be simplified to three-wave mechanism |
Hi Yang,


OK. It seems to me that you're suggesting that when one peer sends the final FIN, it can terminate the connection without waiting for the FIN ACK.
However, if this FIN hasn't arrived at the other end, the other end cannot know the peer has terminated the connection. 
My concern here is that the other end would be suspended in this kind of situation.
--
Yoshi


On Sun, Aug 25, 2024 at 12:09 AM [e-mail] <[e-mail]> wrote:

yes



---- Replied Message ----
| From | Yoshifumi Nishida<[e-mail]> |
| Date | 08/25/2024 15:05 |
| To | [e-mail] |
| Cc | tcpm<[e-mail]> |
| Subject | Re: [tcpm] Discussion on whether the TCP four-wave mechanism can be simplified to three-wave mechanism |
Hi Yang,
Are you referring to the 4 way close in TCP? and you want to make it 3 way?
--
Yoshi


On Fri, Aug 23, 2024 at 5:03 AM [e-mail] <[e-mail]> wrote:

IEFT Hello, I am a Chinese computer major student, I have an idea is to study the TCP four wave mechanism, if one party still has data to pass, continue to open the connection. However, if both parties have no more data to transmit at a given moment, can it be possible to dispense with one wave, thus turning four waves into three? (Go straight back to the finally state at the end of the third time.) For example, is it feasible to go directly to the last step, that is, to change from the original four waves to three waves? Is there a theoretical basis for this assumption and the possibility of practical application?
 
Thank you, looking forward to reply!
 
I wish all the best!
Yang Zhiyuan
August 23, 2024
 




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