SecureConnection at client side never reaches 'open' state.

[brubbel]

SecureChannel.open(): called at server-side when client performs a OpenSecureChannelRequest.
SecureChannel.set_channel(): called at client side when it receives a response to above request.
The self._open flag is not set at this point.

Result: SecureChannel.is_open() always reports False at client side.

python-opcua/opcua/common/connection.py

Lines 146 to 169 in 9c115cd

	def set_channel(self, channel):
	"""
	Called on client side when getting secure channel data from server
	"""
	self.channel = channel
	def open(self, params, server):
	"""
	called on server side to open secure channel
	"""
	if not self._open or params.RequestType == ua.SecurityTokenRequestType.Issue:
	self._open = True
	self.channel = ua.OpenSecureChannelResult()
	self.channel.SecurityToken.TokenId = 13 # random value
	self.channel.SecurityToken.ChannelId = server.get_new_channel_id()
	self.channel.SecurityToken.RevisedLifetime = params.RequestedLifetime
	else:
	self._old_tokens.append(self.channel.SecurityToken.TokenId)
	self.channel.SecurityToken.TokenId += 1
	self.channel.SecurityToken.CreatedAt = datetime.utcnow()
	self.channel.SecurityToken.RevisedLifetime = params.RequestedLifetime
	self.channel.ServerNonce = ua.utils.create_nonce(self.security_policy.symmetric_key_size)
	self.security_policy.make_symmetric_key(self.channel.ServerNonce, params.ClientNonce)
	return self.channel