FreeOpcUa / python-opcua

    :vartype Encoding: String

    :ivar TransportProtocol:

    :vartype TransportProtocol: String

    :ivar SecurityMode:

    :vartype SecurityMode: MessageSecurityMode

    :ivar SecurityPolicyUri:

    :vartype SecurityPolicyUri: String

    :ivar ClientCertificate:

    :vartype ClientCertificate: ByteString

    '''

    ua_types = {

        'SessionId': 'NodeId',

        'ClientUserIdOfSession': 'String',

        'ClientUserIdHistory': 'String',

        'AuthenticationMechanism': 'String',

        'Encoding': 'String',

        'TransportProtocol': 'String',

        'SecurityMode': 'MessageSecurityMode',

        'SecurityPolicyUri': 'String',

        self.SecurityLevel = 0

        self._freeze = True

    def to_binary(self):

        packet = []

        packet.append(uabin.Primitives.String.pack(self.EndpointUrl))

        packet.append(self.Server.to_binary())

        packet.append(uabin.Primitives.ByteString.pack(self.ServerCertificate))

        packet.append(uabin.Primitives.UInt32.pack(self.SecurityMode.value))

        packet.append(uabin.Primitives.String.pack(self.SecurityPolicyUri))

        packet.append(uabin.Primitives.Int32.pack(len(self.UserIdentityTokens)))

        for fieldname in self.UserIdentityTokens:

            packet.append(fieldname.to_binary())

        packet.append(uabin.Primitives.String.pack(self.TransportProfileUri))

        packet.append(uabin.Primitives.Byte.pack(self.SecurityLevel))

        return b''.join(packet)

    @staticmethod

    def from_binary(data):

        self.MaxResponseMessageSize = 0

        self._freeze = True

    def to_binary(self):

        packet = []

        packet.append(self.ClientDescription.to_binary())

        packet.append(uabin.Primitives.String.pack(self.ServerUri))

        packet.append(uabin.Primitives.String.pack(self.EndpointUrl))

        packet.append(uabin.Primitives.String.pack(self.SessionName))

        packet.append(uabin.Primitives.ByteString.pack(self.ClientNonce))

        packet.append(uabin.Primitives.ByteString.pack(self.ClientCertificate))

        packet.append(uabin.Primitives.Double.pack(self.RequestedSessionTimeout))

        packet.append(uabin.Primitives.UInt32.pack(self.MaxResponseMessageSize))

        return b''.join(packet)

    @staticmethod

    def from_binary(data):