Probably avoidable (unclear) IndexError when connecting.

[tormen]

I am not sure what exactly causes the below problem, but I can pretty good predict /when/ it will happen:

I open a ssh tunnel to the mysql server and use this in the ~/.ssh/config:
    LocalForward 10101 127.0.0.1:3306
I open a db connection with python to 127.0.0.1 port 10101.
I put my notebook to standby <<< here I am not sure if the above connection is still open or already closed.
The next morning I power on the notebook the ssh connection still sits there but timed out.
If I now try to connect with python to 127.0.0.1 port 10101 I get the below traceback.
If I then reestablish the ssh tunnel everything works fine.

But if I try to connect to 127.0.0.1 port 10101 with no ssh tunnel established, I get a nice and clean:
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on '127.0.0.1:10101' (111)

Traceback (most recent call last):
  File "/home/cypra/Desktop/dev/api/api/cypra/src/cypra/dl/db/user/session.py", line 7, in <module>
    import cypra.dl.db as db
  File "/home/cypra/Desktop/dev/api/api/cypra/src/cypra/dl/db/__init__.py", line 6, in <module>
    import cypra.dblogger as log
  File "/home/cypra/Desktop/dev/api/api/cypra/src/cypra/dblogger.py", line 13, in <module>
    __LOG_DB_CONN__ = db.connect(**config.SYSTEMDBPARAMS)
  File "/usr/lib/python3.1/site-packages/mysql/connector/__init__.py", line 45, in Connect
    return MySQL(*args, **kwargs)
  File "/usr/lib/python3.1/site-packages/mysql/connector/mysql.py", line 317, in __init__
    self.connect(*args, **kwargs)
  File "/usr/lib/python3.1/site-packages/mysql/connector/mysql.py", line 418, in connect
    self._open_connection()
  File "/usr/lib/python3.1/site-packages/mysql/connector/mysql.py", line 91, in _open_connection
    self.conn.open_connection()
  File "/usr/lib/python3.1/site-packages/mysql/connector/connection.py", line 163, in open_connection
    buf = self.recv()[0]
  File "/usr/lib/python3.1/site-packages/mysql/connector/connection.py", line 82, in recv
    (pktsize, pktnr) = self.protocol.handle_header(header)
  File "/usr/lib/python3.1/site-packages/mysql/connector/protocol.py", line 61, in handle_header
    pktnr = utils.int1read(buf[3])
IndexError: index out of range

Any idea what causes this?

[tormen (quickhelp)]

Sorry this is a duplicate of Bug #528451.