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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def opened(self):
 """Send the connect message to the server."""

        # give up if there are no more ddp versions to try
        if self._ddp_version_index == len(DDP_VERSIONS):
            self.ddpsocket._debug_log('* DDP VERSION MISMATCH')
            self.emit('version_mismatch', DDP_VERSIONS)
            return

        # use server recommended version if we support it
        if self._retry_new_version in DDP_VERSIONS:
            self._ddp_version_index = [i for i, x in enumerate(DDP_VERSIONS)
                                       if x == self._retry_new_version][0]

        connect_msg = {
            "msg": "connect",
            "version": DDP_VERSIONS[self._ddp_version_index],
            "support": DDP_VERSIONS
        }

        # if we've already got a session token then reconnect
        if self._session:
            connect_msg["session"] = self._session

        self.send(connect_msg)