buglwIP - A Lightweight TCP/IP stack - Bugs: bug #43847, New fragment overlaps old data...


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bug #43847: New fragment overlaps old data (retransmission?)

Submitted by:  ezra <ebs111>
Submitted on:  Thu 18 Dec 2014 04:26:32 PM UTC  
Category:  TCP Severity:  3 - Normal
Item Group:  None Status:  Works For Me
Privacy:  Public Assigned to:  Simon Goldschmidt <goldsimon>
Open/Closed:  Closed Planned Release:  None
lwIP version:  1.4.1

Mon 22 Dec 2014 07:47:59 AM UTC, comment #1: 

Overlapping fragments are allowed in tcp.

Also, I'm sure the overlapping fragments are not your problem.

Please try to narrow down your problem (e.g. by better describing your prolbem, describing your software setup/which lwip port are you using and/or sending a wireshark trace to discuss) and discuss it on lwip-users.

Simon Goldschmidt <goldsimon>
Project AdministratorIn charge of this item.
Thu 18 Dec 2014 04:26:32 PM UTC, original submission:  


i am using stm32f207zg and KSZ8051RNL for phy and from time to time in refresh i get:
" Expert Info (Error/Malformed): New fragment overlaps old data (retransmission?)" (viewed in wireshark).

it returns severel times and freezes there.

what could be the reason?


ezra <ebs111>


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2014-12-22 goldsimon StatusNone => Works For Me
        Assigned toNone => goldsimon
        Open/ClosedOpen => Closed

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