Fixed exception when the ssl handshake fail on a new client connection.

import time

import socket

import select

import logging

from sjrpc.core import RpcConnection, ConnectionManager

class SimpleRpcServer(ConnectionManager):

        if fd == self._listening_sock.fileno():

            # Event concerns the listening socket:

            if event & select.EPOLLIN:

                sock, address = self._accept_connection()

                accepted = self._accept_connection()

                if accepted is not None:

                    sock, address = accepted

                    sock.setblocking(False)

                    connection = RpcConnection(sock, self, 

                                               handler=self._default_handler)

    def _accept_connection(self):

        sock, address = self._listening_sock.accept()

        sslsock = ssl.wrap_socket(sock, server_side=True, keyfile=self._keyfile,

        try:

            sslsock = ssl.wrap_socket(sock, server_side=True,

                                      keyfile=self._keyfile,

                                      certfile=self._certfile,

                                      ssl_version=ssl.PROTOCOL_TLSv1,

                                      do_handshake_on_connect=True)

        except ssl.SSLError as err:

            logging.error('Error when accepting ssl connection: %s' % err)

        else:

            return sslsock, address