[PYTHON-CRYPTO] Memoryleak in SSL.Connection

[Andre Reitz]

Hy all,

There is a memoryleak if you use
the function setblocking..... of SSL.Connection

e.g.:
  self._write_bio
  self._read_bio
...are bound instance methods, which referr to the Connection object

it seems that because of this backreference,
the cyclic garbagecollection would be needed to free
the Connection object,
but because of the __del__ method in Connection, it can 
never be freed.

This is fatal if used as a Server:) 
We have exactly this problem:
 When the Server runs one Week, the server
 consumes half of the memory.




Greetings, Andre'
And thank you very much in advance.






...
    sendall = send = write = _write_bio
    recv = read  = _read_bio

    def setblocking(self, mode):
        """Set this connection's underlying socket to _mode_."""
        self.socket.setblocking(mode)
        if mode:
            self.send = self.write = self._write_bio
            self.recv = self.read = self._read_bio
        else:
            self.send = self.write = self._write_nbio
            self.recv = self.read = self._read_nbio


Perhaps this should be done like this.....

    def setblocking(self,mode):
        self.blockingmode=mode
    ...
    def send(self,...):
        if self.blockingmode: return self._write_bio(...)
        return self._write_nbio(...)



Does anybody have a better idea?



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