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# README for passive mode debugging

eric7 provides the capability to debug programs using the passive
mode. In this mode it is possible to start the debugger separate from
the IDE. This may be done on a different computer as well. If the
debugger is started on a remote machine, it is your responsibility
to ensure, that the paths to the script to be debugged are identical
on both machines or you configured the path translation accordingly.

In order to enable passive mode debugging in the IDE choose the
debugger tab of the preferences dialog and enable the passive mode
debugging checkbox. You may change the default port as well. Please
be aware that you have to tell the debugger the port, if it is different
to the default value of 42424.

On the remote computer you have to have the debugger scripts installed.
Use DebugClient.py to debug normal and multi threaded scripts. The debugger
knows about the following command line switches.

-h <hostname>
: This specifies the hostname of the machine running the IDE.

-p <portnumber>
: This specifies the portnumber of the IDE.

-w <directory>
: This specifies the working directory to be used for the script
  to be debugged.

-t
: This enables tracing into the Python library.

-n
: This disables the redirection of stdin, stdout and stderr.

-e
: This disables reporting of exceptions.

--fork-child
: This tells the debugger to follow the child when forking.

--fork-parent
: This tells the debugger to follow the parent when forking

The command line parameters have to be followed by `--` (double dash),
the script to be debugged and its command line parameters.

Example:

    python DebugClient -h somehost -- myscript.py param1

After the execution of the debugger command, it connects to the IDE and
tells it the filename of the script being debugged. The IDE will try to
load it and the script will stop at the first line. After that you may set
breakpoints, step through your script and use all the debugging functions.

__Note__: The port and hostname may alternatively be set through the environment
variables ERICPORT and ERICHOST.

Please send bug reports, feature requests or contributions to eric bugs address
[eric-bugs@die-offenbachs.de](mailto:eric-bugs@die-offenbachs.de) or using the
built-in bug reporting dialog.