========
Overview
========
Remote vanilla PDB (over TCP sockets) *done right*: no extras, proper handling around connection failures and CI. Based
on `pdbx <https://pypi.python.org/pypi/pdbx>`_.
* Free software: BSD 2-Clause License
Installation
============
::
pip install remote-pdb
Usage
=====
To open a remote PDB on first available port:
.. code:: python
from remote_pdb import set_trace
set_trace() # you'll see the port number in the logs
To use some specific host/port:
.. code:: python
from remote_pdb import RemotePdb
RemotePdb('127.0.0.1', 4444).set_trace()
To connect just run ``telnet 127.0.0.1 4444``. When you are finished
debugging, either exit the debugger, or press Control-], then Control-d.
Alternately, one can connect with NetCat: ``nc -C 127.0.0.1 4444`` or Socat: ``socat readline
tcp:127.0.0.1:4444`` (for line editing and history support). When finished debugging, either exit
the debugger, or press Control-c.
Integration with breakpoint() in Python 3.7+
============================================
If you are using Python 3.7 one can use the new ``breakpoint()`` built in to invoke
remote PDB. In this case the following environment variable must be set:
.. code:: bash
PYTHONBREAKPOINT=remote_pdb.set_trace
The debugger can then be invoked as follows, without any imports:
.. code:: python
breakpoint()
As the ``breakpoint()`` function does not take any arguments, environment variables can be used to
specify the host and port that the server should listen to. For example, to run ``script.py`` in such a
way as to make ``telnet 127.0.0.1 4444`` the correct way of connecting, one would run:
.. code:: bash
PYTHONBREAKPOINT=remote_pdb.set_trace REMOTE_PDB_HOST=127.0.0.1 REMOTE_PDB_PORT=4444 python script.py
If ``REMOTE_PDB_HOST`` is omitted then a default value of 127.0.0.1 will be used. If ``REMOTE_PDB_PORT`` is
omitted then the first available port will be used. The connection information will be logged to the console,
as with calls to ``remote_pdb.set_trace()``.
Note about OS X
===============
In certain scenarios (backgrounded processes) OS X will prevent readline to be imported (and readline is a dependency of pdb).
A workaround (run this early):
.. code:: python
import signal
signal.signal(signal.SIGTTOU, signal.SIG_IGN)
See `#9 <https://github.com/ionelmc/python-remote-pdb/issues/9>`_ and `cpython#14892 <http://bugs.python.org/issue14892>`_.
Requirements
============
Python 2.6, 2.7, 3.2, 3.3 and PyPy are supported.
Similar projects
================
* `qdb <https://pypi.python.org/pypi/qdb>`_
Changelog
=========
1.3.0 (2019-03-13)
------------------
* Documented support for Python 3.8's ``breakpoint()``.
* Added support for setting the socket listening host/port through the ``REMOTE_PDB_HOST``/``REMOTE_PDB_PORT``
environment variables. Contributed by Matthew Wilkes in `#14 <https://github.com/ionelmc/python-remote-pdb/pull/14>`_.
* Removed use of `rw` file wrappers around sockets (turns out socket's ``makefile`` is very buggy in Python 3.6 and
later - `output is discarded <https://bugs.python.org/issue35928>`_). Contributed in `#13
<https://github.com/ionelmc/python-remote-pdb/pull/13>`_.
1.2.0 (2015-09-26)
------------------
* Always print/log listening address.
1.1.3 (2015-07-06)
------------------
* Corrected the default frame tracing starts from.
1.1.2 (2015-07-06)
------------------
* Small readme update.
1.1.1 (2015-07-06)
------------------
* Remove bogus ``remote_pdb`` console script.
1.1.0 (2015-06-21)
------------------
* Fixed buffering issues when running on Python 3 and Windows.
1.0.0 (2015-06-15)
------------------
* Added support for PDB++.
0.2.1 (2014-03-07)
------------------
* First release on PyPI.