Wireshark mailing list archives
Re: Retransmission because of no ACK from user
From: Sake Blok <sake () euronet nl>
Date: Sun, 16 Jan 2011 09:44:12 +0100
On 16 jan 2011, at 06:46, vincent paul wrote:
I am looking at one trace with retransmissions from server because user's side did not send ACK for packets it received from server. Is there any reason why user's side does not send out ACK.
Well, finding the reason for irregular behavior is the whole point of packet analysis. You have a starting point that you don't see ACKs from the user t the point where you made the traces. From this point onwards, you have to start thinking about what could have gone wrong. 1) Do you see any traffic from the client after the point where retransmissions start? If not, the client probably disconnected in the middle of the session. Or an intermediate link broke down. 2) If there are packets from the client later on, there might have been a link problem for a while, or maybe a saturated link etc. You might have to capture closer to the client to determine where the problem starts. Usually you would make traces both at the client and the server side and move them towards one-another to find the spot where things go bad. Good luck! Sake ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
Current thread:
- Help decrypting with known WEP key Marty Gramlick (Jan 13)
- Retransmission because of no ACK from user vincent paul (Jan 15)
- Re: Retransmission because of no ACK from user Sake Blok (Jan 16)
- Re: Retransmission because of no ACK from user Andrew Hood (Jan 16)
- Re: Retransmission because of no ACK from user vincent paul (Jan 16)
- Re: Retransmission because of no ACK from user Martin Visser (Jan 17)
- Re: Retransmission because of no ACK from user Alan Tu (Jan 17)
- Re: Retransmission because of no ACK from user Martin Visser (Jan 18)
- Re: Retransmission because of no ACK from user vincent paul (Jan 19)
- Retransmission because of no ACK from user vincent paul (Jan 15)