Wireshark mailing list archives
Re: XXXX: avoid appending xxxx multiple times to frame.protocols field
From: Guy Harris <guy () alum mit edu>
Date: Thu, 5 Oct 2017 23:55:29 -0700
On Oct 5, 2017, at 11:23 PM, Roland Knall <rknall () gmail com> wrote:
Personally I think moving to a set would reduce functionality for some applications. Industrial ethernet applications for instance heavily rely on multiple protocols being transported in single frames multiple times (one UDP packet contains a lot of openSAFETY frames, which themselve could contain data dissectors).
So there are cases where, for example, for code that examines the protocol list, that code would need to see, for example, eth:ip:tcp:x11:x11:x11 for a TCP segment containing three X11 requests or replies, rather than just seeing eth:ip:tcp:x11? (BTW, the protocol list is a linearization of a structure that's not linear - x11:x11:x11 doesn't mean X11 inside X11 inside X11, it means 3 X11's inside TCP. Hopefully no software naively assumes that the protocol list is a tower of protocols, rather than just a representation of what you see if you move forward through the packet and any reassembled chunks.) ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- XXXX: avoid appending xxxx multiple times to frame.protocols field Guy Harris (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Pascal Quantin (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Roland Knall (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Guy Harris (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Roland Knall (Oct 06)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Guy Harris (Oct 06)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Roland Knall (Oct 06)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Roland Knall (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Pascal Quantin (Oct 05)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Pascal Quantin (Oct 06)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Michael Mann via Wireshark-dev (Oct 06)
- Re: XXXX: avoid appending xxxx multiple times to frame.protocols field Evan Huus (Oct 06)