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Revision 3

updated 2017-11-09 21:27:19 +0000

ACK_RTT for packet send from server

Hello everyone,

I want to ask how is it possible to get a ACK_RTT time for a packet that is send from my computer, and received by some server.

I have this lines in wireshark:

No    Time       ACK_RTT  protocol    SRC IP ADDR        DST IP ADDR
543 0.000000               TCP      192.168.0.105    www.dropbox-dns.com    SYN
550 0.060792    0.060792   TCP     www.dropbox-dns.com  192.168.0.105      SYN,ACK
552 0.000207    0.000207   TCP      192.168.0.105   www.dropbox-dns.com     ACK

I can't understand how is it possible to have ACK_RTT Time for the Line 3 (No. 552), its just ACK to the server.

Thank you in advance!

Revision 2

ille

updated 2017-11-09 21:21:05 +0000

ACK_RTT for packet send from server

Hello everyone,

I want to ask how is it possible to get a ACK_RTT time for a packet that is send from my computer, and received by some server.

I have this lines in wireshark:

No    Time       ACK_RTT  protocol    SRC IP ADDR        DST IP ADDR
543 0.000000     0.000000   TCP      192.168.0.105    www.dropbox-dns.com    SYN
550 0.060792    0.060792   TCP     www.dropbox-dns.com  192.168.0.105      SYN,ACK
552 0.000207    0.000207   TCP      192.168.0.105   www.dropbox-dns.com     ACK

I can't understand how is it possible to have ACK_RTT Time for the Line 3 (No. 552), its just ACK to the server.

Thank you in advance!

Revision 1

ille

asked 2017-11-09 21:05:49 +0000

ACK_RTT for packet send from server

Hello everyone,

I want to ask how is it possible to get a ACK_RTT time for a packet that is send from ~~my computer,~~ some server, and received by ~~some server.~~my computer.

I have this ~~lines~~ line in wireshark:

 No     Time     ACK_RTT  ACK_RTT   protocol     SRC IP ADDR         DST IP ADDR
543 0.000000    0.000000   TCP 564  0.055450  192.168.0.105   0.055450000     TCP    www.dropbox-dns.com    SYN
550 0.060792    0.060792   TCP     www.dropbox-dns.com  192.168.0.105      SYN,ACK
552 0.000207    0.000207   TCP      192.168.0.105   www.dropbox-dns.com     ACK

I can't understand how is it possible for us to ~~have ACK_RTT Time~~ know when the packet is send from the server, for ~~the Line 3 (No. 552), its just ACK~~ us to ~~the server.~~be able to calculate RTT.

Thank you in advance!