Add display filter sanity check to Tshark
Description
Following request 9514, **dftest.exe ** is removed from installers.
The dftest.exe was a convenient way to check a filter in a script. Now that this is gone, please add this function to Tshark. Only to check the syntax of an display filter. Simply returning return code:0 if the display filter provided is valid.
Sample capture file
-no pcap-
Links / references / protocol specifications
removed dftest.exe; !9514 (merged)