use wireshark capturing http delays
use wireshark capturing http delays set the Time column to the follwing format View->Time Display Format->Seconds Since Beginning of Capture As the client is also able to send several requests the same time(in different TCP connections)you need to check the TCP Stream number as.For this purpose,please add a new column the I for the.Hepstres.Hear.Heream.Heream Add a column caled「TCP Stream」.The n chose Custom as type and tcp.stream as value. The n sort the GUI bythe「TCP Stream」column. The n use a Time Reference (CTRL-T in the GUI)for easury delta time caculation between request and respnse.As You can see the'delay'between request and reconnse is 2.14 secondfor the first request.245 for conrequest.
https://ask.wireshark.org/questions/23168/capturing-http-response-delays
Edit -> Preferences -> User Interface -> Columns
https://ask.wireshark.org/questions/23168/capturing-http-response-delays