Hi every body For my project (the TCP performance) I dowloaded a file and capture it on the wireshark and now when I look at the captured wireshark all the sequence number are the same throughout the file, they all are seq=125,this is when I have the Acks number all different.I am sure it shouldn't be like this can you help me and tell me what is wrong? asked 25 Feb '12, 16:08  mahsa |
One Answer:
It sounds like data is flowing in one direction only, and you're only seeing packets sent by one side (the data receiver) of the conversation. This is exactly what you will see if data is flowing from A to B, and you're only looking at packets sent by B. If B's packets do not contain any data, but are only "pure" TCP--ACKs, window updates, zero window, etc.--then B will never increase its sequence number. However, because B is receiving data from A, B will keep increasing the ACK number as it acknowledges the data packets from A. answered 25 Feb '12, 22:51  Jim Aragon edited 25 Feb '12, 22:54 |
