Wireshark-bugs: [Wireshark-bugs] [Bug 5356] Character echo pauses in Capture Filter field in Cap
Date: Tue, 14 Jun 2011 23:32:26 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5356

--- Comment #10 from Colin Caughie <[email protected]> 2011-06-14 23:32:22 PDT ---
(In reply to comment #9)
> 4. The above being said, my personal feeling is that this issue needs
>    to be handled somehow:
> 
>    ? Add a Wireshark preference to not do 'real-time' capture filter
>      syntax checking ?

A preference would be an option, but I would strongly suggest that it should
either be disabled by default, or be a check box displayed on the capture
dialog itself next to the filter control. Or both.

>    ? Provide a way to disable DNS lookups in libpcap/winpcap (enabled by 
>      a preference) ?
>    ? ???

Ideally this would be an argument to pcap_compile. Or a new function
"pcap_validate". Then you can do basic syntax checking in real time, and full
validation when the user clicks "Start" as was done in previous versions of
Wireshark.

It should be remembered that this real time validation is in no way a necessary
feature, it's just a helpful tool. But it's only helpful if it really is real
time; if it slows down your typing in any way then it's much worse than not
having help.

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