Logger

uMatrix version 0.9.0.0 comes with a completely new logger.

This new logger is forward-looking, i.e. it will log events only when it is actually opened. This is a more efficient approach than logging everything even when the user does not care about inspecting the network events -- which used to be the case. So now the memory/CPU overhead of logging is incurred if and only if the logger is being used (opened).

Also, the logger is now unified:

• All events of interest are being logged, not just network traffic.
• All events from everywhere are logged in one place, no need to select which tab to inspect.
  • This is particularly useful to relate together behind-the-scene event to ongoing network traffic.

Special status indicators

The eye-slash indicator means the entry is a behind-the-scene network request.

The x indicator means the entry belongs to a tab which has been closed. You may cleanup such entries from the logger using the x icon in the toolbar.

Filter expressions

You can filter entries in the logger using filter expressions. Log entries which do not match all filter expression will be hidden from view. Syntax for a filter expression:

• Enter foo to only show entries which have a string foo.
• Enter |foo to only show entries which have a field starting with foo.
  • Tip: use |-- to show only entries which were blocked.
• Enter foo| to only show entries which have a field ending with foo.
• Enter |foo| to only show entries which have exactly a field with foo.
• Prefix any expression with ! to reverse the meaning of the expression.
  • !foo means display only entries which do not have the string foo in it.
  • !|-- means display only entries which were not blocked.
• When more than one filter expression appear, a logical and between the expressions is implied.