async def _process_message(self, typeid, requesthdr, seqhdr, body):
if typeid in [
ua.NodeId(
ua.ObjectIds.CreateSessionRequest_Encoding_DefaultBinary),
ua.NodeId(
ua.ObjectIds.ActivateSessionRequest_Encoding_DefaultBinary)
]:
# The connection is first created without a user being attached, and then during activation the
user = None
elif self.session is None:
raise ua.uaerrors.BadUserAccessDenied
else:
user = self.session.user
if self._connection.security_policy.permissions is not None:
if self._connection.security_policy.permissions.check_validity(
user, typeid, body) is False:
raise ua.uaerrors.BadUserAccessDenied
if typeid == ua.NodeId(
ua.ObjectIds.CreateSessionRequest_Encoding_DefaultBinary):
_logger.info("Create session request (%s)", user)
params = struct_from_binary(ua.CreateSessionParameters, body)
# create the session on server
self.session = self.iserver.create_session(self.name,
external=True)
# get a session creation result to send back
sessiondata = await self.session.create_session(
params, sockname=self.sockname)
response = ua.CreateSessionResponse()
response.Parameters = sessiondata
response.Parameters.ServerCertificate = self._connection.security_policy.host_certificate
if self._connection.security_policy.peer_certificate is None:
data = params.ClientNonce
else:
data = self._connection.security_policy.peer_certificate + params.ClientNonce
response.Parameters.ServerSignature.Signature = \
self._connection.security_policy.asymmetric_cryptography.signature(data)
response.Parameters.ServerSignature.Algorithm = self._connection.security_policy.AsymmetricSignatureURI
#_logger.info("sending create session response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.CloseSessionRequest_Encoding_DefaultBinary):
_logger.info("Close session request (%s)", user)
if self.session:
deletesubs = ua.ua_binary.Primitives.Boolean.unpack(body)
await self.session.close_session(deletesubs)
else:
_logger.info("Request to close non-existing session (%s)",
user)
response = ua.CloseSessionResponse()
_logger.info("sending close session response (%s)", user)
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.ActivateSessionRequest_Encoding_DefaultBinary):
_logger.info("Activate session request (%s)", user)
params = struct_from_binary(ua.ActivateSessionParameters, body)
if not self.session:
_logger.info("request to activate non-existing session (%s)",
user)
raise ServiceError(ua.StatusCodes.BadSessionIdInvalid)
if self._connection.security_policy.host_certificate is None:
data = self.session.nonce
else:
data = self._connection.security_policy.host_certificate + self.session.nonce
self._connection.security_policy.asymmetric_cryptography.verify(
data, params.ClientSignature.Signature)
result = self.session.activate_session(
params, self._connection.security_policy.peer_certificate)
response = ua.ActivateSessionResponse()
response.Parameters = result
#_logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.ReadRequest_Encoding_DefaultBinary):
_logger.info("Read request (%s)", user)
params = struct_from_binary(ua.ReadParameters, body)
results = await self.session.read(params)
response = ua.ReadResponse()
response.Results = results
#_logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.WriteRequest_Encoding_DefaultBinary):
_logger.info("Write request (%s)", user)
params = struct_from_binary(ua.WriteParameters, body)
results = await self.session.write(params)
response = ua.WriteResponse()
response.Results = results
#_logger.info("sending write response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.BrowseRequest_Encoding_DefaultBinary):
_logger.info("Browse request (%s)", user)
params = struct_from_binary(ua.BrowseParameters, body)
results = await self.session.browse(params)
response = ua.BrowseResponse()
response.Results = results
#_logger.info("sending browse response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.GetEndpointsRequest_Encoding_DefaultBinary):
_logger.info("get endpoints request (%s)", user)
params = struct_from_binary(ua.GetEndpointsParameters, body)
endpoints = await self.iserver.get_endpoints(
params, sockname=self.sockname)
response = ua.GetEndpointsResponse()
response.Endpoints = endpoints
#_logger.info("sending get endpoints response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.FindServersRequest_Encoding_DefaultBinary):
_logger.info("find servers request (%s)", user)
params = struct_from_binary(ua.FindServersParameters, body)
servers = self.iserver.find_servers(params)
response = ua.FindServersResponse()
response.Servers = servers
#_logger.info("sending find servers response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterServerRequest_Encoding_DefaultBinary):
_logger.info("register server request %s", user)
serv = struct_from_binary(ua.RegisteredServer, body)
self.iserver.register_server(serv)
response = ua.RegisterServerResponse()
#_logger.info("sending register server response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterServer2Request_Encoding_DefaultBinary):
_logger.info("register server 2 request %s", user)
params = struct_from_binary(ua.RegisterServer2Parameters, body)
results = self.iserver.register_server2(params)
response = ua.RegisterServer2Response()
response.ConfigurationResults = results
#_logger.info("sending register server 2 response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.
TranslateBrowsePathsToNodeIdsRequest_Encoding_DefaultBinary):
_logger.info("translate browsepaths to nodeids request (%s)", user)
params = struct_from_binary(
ua.TranslateBrowsePathsToNodeIdsParameters, body)
paths = await self.session.translate_browsepaths_to_nodeids(
params.BrowsePaths)
response = ua.TranslateBrowsePathsToNodeIdsResponse()
response.Results = paths
#_logger.info("sending translate browsepaths to nodeids response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.AddNodesRequest_Encoding_DefaultBinary):
_logger.info("add nodes request (%s)", user)
params = struct_from_binary(ua.AddNodesParameters, body)
results = await self.session.add_nodes(params.NodesToAdd)
response = ua.AddNodesResponse()
response.Results = results
#_logger.info("sending add node response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteNodesRequest_Encoding_DefaultBinary):
_logger.info("delete nodes request (%s)", user)
params = struct_from_binary(ua.DeleteNodesParameters, body)
results = await self.session.delete_nodes(params)
response = ua.DeleteNodesResponse()
response.Results = results
#_logger.info("sending delete node response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.AddReferencesRequest_Encoding_DefaultBinary):
_logger.info("add references request (%s)", user)
params = struct_from_binary(ua.AddReferencesParameters, body)
results = await self.session.add_references(params.ReferencesToAdd)
response = ua.AddReferencesResponse()
response.Results = results
#_logger.info("sending add references response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteReferencesRequest_Encoding_DefaultBinary):
_logger.info("delete references request (%s)", user)
params = struct_from_binary(ua.DeleteReferencesParameters, body)
results = await self.session.delete_references(
params.ReferencesToDelete)
response = ua.DeleteReferencesResponse()
response.Parameters.Results = results
#_logger.info("sending delete references response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.CreateSubscriptionRequest_Encoding_DefaultBinary):
_logger.info("create subscription request (%s)", user)
params = struct_from_binary(ua.CreateSubscriptionParameters, body)
result = await self.session.create_subscription(
params, callback=self.forward_publish_response)
response = ua.CreateSubscriptionResponse()
response.Parameters = result
#_logger.info("sending create subscription response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteSubscriptionsRequest_Encoding_DefaultBinary
):
_logger.info("delete subscriptions request (%s)", user)
params = struct_from_binary(ua.DeleteSubscriptionsParameters, body)
results = await self.session.delete_subscriptions(
params.SubscriptionIds)
response = ua.DeleteSubscriptionsResponse()
response.Results = results
#_logger.info("sending delete subscription response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.CreateMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("create monitored items request (%s)", user)
params = struct_from_binary(ua.CreateMonitoredItemsParameters,
body)
results = await self.session.create_monitored_items(params)
response = ua.CreateMonitoredItemsResponse()
response.Results = results
#_logger.info("sending create monitored items response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.ModifyMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("modify monitored items request (%s)", user)
params = struct_from_binary(ua.ModifyMonitoredItemsParameters,
body)
results = await self.session.modify_monitored_items(params)
response = ua.ModifyMonitoredItemsResponse()
response.Results = results
#_logger.info("sending modify monitored items response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("delete monitored items request (%s)", user)
params = struct_from_binary(ua.DeleteMonitoredItemsParameters,
body)
results = await self.session.delete_monitored_items(params)
response = ua.DeleteMonitoredItemsResponse()
response.Results = results
#_logger.info("sending delete monitored items response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.HistoryReadRequest_Encoding_DefaultBinary):
_logger.info("history read request (%s)", user)
params = struct_from_binary(ua.HistoryReadParameters, body)
results = await self.session.history_read(params)
response = ua.HistoryReadResponse()
response.Results = results
#_logger.info("sending history read response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterNodesRequest_Encoding_DefaultBinary):
_logger.info("register nodes request (%s)", user)
params = struct_from_binary(ua.RegisterNodesParameters, body)
_logger.info("Node registration not implemented")
response = ua.RegisterNodesResponse()
response.Parameters.RegisteredNodeIds = params.NodesToRegister
#_logger.info("sending register nodes response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.UnregisterNodesRequest_Encoding_DefaultBinary):
_logger.info("unregister nodes request (%s)", user)
params = struct_from_binary(ua.UnregisterNodesParameters, body)
response = ua.UnregisterNodesResponse()
#_logger.info("sending unregister nodes response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.PublishRequest_Encoding_DefaultBinary):
_logger.debug("publish request (%s)", user)
if not self.session:
return False
params = struct_from_binary(ua.PublishParameters, body)
data = PublishRequestData(requesthdr=requesthdr, seqhdr=seqhdr)
# Store the Publish Request (will be used to send publish answers from server)
self._publish_requests.append(data)
# If there is an enqueued result forward it immediately
while self._publish_results:
result = self._publish_results.popleft()
if result.SubscriptionId not in self.session.subscription_service.active_subscription_ids:
# Discard the result if the subscription is no longer active
continue
await self.forward_publish_response(result)
break
self.session.publish(params.SubscriptionAcknowledgements)
#_logger.debug("publish forward to server")
elif typeid == ua.NodeId(
ua.ObjectIds.RepublishRequest_Encoding_DefaultBinary):
_logger.info("re-publish request (%s)", user)
params = struct_from_binary(ua.RepublishParameters, body)
msg = self.session.republish(params)
response = ua.RepublishResponse()
response.NotificationMessage = msg
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.CloseSecureChannelRequest_Encoding_DefaultBinary):
_logger.info("close secure channel request (%s)", user)
self._connection.close()
response = ua.CloseSecureChannelResponse()
self.send_response(requesthdr.RequestHandle, seqhdr, response)
return False
elif typeid == ua.NodeId(
ua.ObjectIds.CallRequest_Encoding_DefaultBinary):
_logger.info("call request (%s)", user)
params = struct_from_binary(ua.CallParameters, body)
results = await self.session.call(params.MethodsToCall)
response = ua.CallResponse()
response.Results = results
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.SetMonitoringModeRequest_Encoding_DefaultBinary):
_logger.info("set monitoring mode request (%s)", user)
params = struct_from_binary(ua.SetMonitoringModeParameters, body)
# FIXME: Implement SetMonitoringMode
# For now send dummy results to keep clients happy
response = ua.SetMonitoringModeResponse()
results = ua.SetMonitoringModeResult()
ids = params.MonitoredItemIds
statuses = [ua.StatusCode(ua.StatusCodes.Good) for node_id in ids]
results.Results = statuses
response.Parameters = results
_logger.info("sending set monitoring mode response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
elif typeid == ua.NodeId(
ua.ObjectIds.SetPublishingModeRequest_Encoding_DefaultBinary):
_logger.info("set publishing mode request (%s)", user)
params = struct_from_binary(ua.SetPublishingModeParameters, body)
# FIXME: Implement SetPublishingMode
# For now send dummy results to keep clients happy
response = ua.SetPublishingModeResponse()
results = ua.SetPublishingModeResult()
ids = params.SubscriptionIds
statuses = [ua.StatusCode(ua.StatusCodes.Good) for node_id in ids]
results.Results = statuses
response.Parameters = results
_logger.info("sending set publishing mode response")
self.send_response(requesthdr.RequestHandle, seqhdr, response)
else:
_logger.warning("Unknown message received %s (%s)", typeid, user)
raise ServiceError(ua.StatusCodes.BadServiceUnsupported)
return True
async def _process_message(self, typeid, requesthdr, algohdr, seqhdr,
body):
if typeid == ua.NodeId(
ua.ObjectIds.CreateSessionRequest_Encoding_DefaultBinary):
_logger.info("Create session request")
params = struct_from_binary(ua.CreateSessionParameters, body)
# create the session on server
self.session = self.iserver.create_session(self.name,
external=True)
# get a session creation result to send back
sessiondata = await self.session.create_session(
params, sockname=self.sockname)
response = ua.CreateSessionResponse()
response.Parameters = sessiondata
response.Parameters.ServerCertificate = self._connection.security_policy.client_certificate
if self._connection.security_policy.server_certificate is None:
data = params.ClientNonce
else:
data = self._connection.security_policy.server_certificate + params.ClientNonce
response.Parameters.ServerSignature.Signature = \
self._connection.security_policy.asymmetric_cryptography.signature(data)
response.Parameters.ServerSignature.Algorithm = "http://www.w3.org/2000/09/xmldsig#rsa-sha1"
_logger.info("sending create session response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.CloseSessionRequest_Encoding_DefaultBinary):
_logger.info("Close session request")
if self.session:
deletesubs = ua.ua_binary.Primitives.Boolean.unpack(body)
await self.session.close_session(deletesubs)
else:
_logger.info("Request to close non-existing session")
response = ua.CloseSessionResponse()
_logger.info("sending close session response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.ActivateSessionRequest_Encoding_DefaultBinary):
_logger.info("Activate session request")
params = struct_from_binary(ua.ActivateSessionParameters, body)
if not self.session:
_logger.info("request to activate non-existing session")
raise ServiceError(ua.StatusCodes.BadSessionIdInvalid)
if self._connection.security_policy.client_certificate is None:
data = self.session.nonce
else:
data = self._connection.security_policy.client_certificate + self.session.nonce
self._connection.security_policy.asymmetric_cryptography.verify(
data, params.ClientSignature.Signature)
result = self.session.activate_session(params)
response = ua.ActivateSessionResponse()
response.Parameters = result
_logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.ReadRequest_Encoding_DefaultBinary):
_logger.info("Read request")
params = struct_from_binary(ua.ReadParameters, body)
results = await self.session.read(params)
response = ua.ReadResponse()
response.Results = results
_logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.WriteRequest_Encoding_DefaultBinary):
_logger.info("Write request")
params = struct_from_binary(ua.WriteParameters, body)
results = await self.session.write(params)
response = ua.WriteResponse()
response.Results = results
_logger.info("sending write response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.BrowseRequest_Encoding_DefaultBinary):
_logger.info("Browse request")
params = struct_from_binary(ua.BrowseParameters, body)
results = await self.session.browse(params)
response = ua.BrowseResponse()
response.Results = results
_logger.info("sending browse response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.GetEndpointsRequest_Encoding_DefaultBinary):
_logger.info("get endpoints request")
params = struct_from_binary(ua.GetEndpointsParameters, body)
endpoints = await self.iserver.get_endpoints(
params, sockname=self.sockname)
response = ua.GetEndpointsResponse()
response.Endpoints = endpoints
_logger.info("sending get endpoints response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.FindServersRequest_Encoding_DefaultBinary):
_logger.info("find servers request")
params = struct_from_binary(ua.FindServersParameters, body)
servers = self.iserver.find_servers(params)
response = ua.FindServersResponse()
response.Servers = servers
_logger.info("sending find servers response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterServerRequest_Encoding_DefaultBinary):
_logger.info("register server request")
serv = struct_from_binary(ua.RegisteredServer, body)
self.iserver.register_server(serv)
response = ua.RegisterServerResponse()
_logger.info("sending register server response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterServer2Request_Encoding_DefaultBinary):
_logger.info("register server 2 request")
params = struct_from_binary(ua.RegisterServer2Parameters, body)
results = self.iserver.register_server2(params)
response = ua.RegisterServer2Response()
response.ConfigurationResults = results
_logger.info("sending register server 2 response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.
TranslateBrowsePathsToNodeIdsRequest_Encoding_DefaultBinary):
_logger.info("translate browsepaths to nodeids request")
params = struct_from_binary(
ua.TranslateBrowsePathsToNodeIdsParameters, body)
paths = await self.session.translate_browsepaths_to_nodeids(
params.BrowsePaths)
response = ua.TranslateBrowsePathsToNodeIdsResponse()
response.Results = paths
_logger.info("sending translate browsepaths to nodeids response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.AddNodesRequest_Encoding_DefaultBinary):
_logger.info("add nodes request")
params = struct_from_binary(ua.AddNodesParameters, body)
results = await self.session.add_nodes(params.NodesToAdd)
response = ua.AddNodesResponse()
response.Results = results
_logger.info("sending add node response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteNodesRequest_Encoding_DefaultBinary):
_logger.info("delete nodes request")
params = struct_from_binary(ua.DeleteNodesParameters, body)
results = await self.session.delete_nodes(params)
response = ua.DeleteNodesResponse()
response.Results = results
_logger.info("sending delete node response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.AddReferencesRequest_Encoding_DefaultBinary):
_logger.info("add references request")
params = struct_from_binary(ua.AddReferencesParameters, body)
results = await self.session.add_references(params.ReferencesToAdd)
response = ua.AddReferencesResponse()
response.Results = results
_logger.info("sending add references response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteReferencesRequest_Encoding_DefaultBinary):
_logger.info("delete references request")
params = struct_from_binary(ua.DeleteReferencesParameters, body)
results = await self.session.delete_references(
params.ReferencesToDelete)
response = ua.DeleteReferencesResponse()
response.Parameters.Results = results
_logger.info("sending delete references response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.CreateSubscriptionRequest_Encoding_DefaultBinary):
_logger.info("create subscription request")
params = struct_from_binary(ua.CreateSubscriptionParameters, body)
result = await self.session.create_subscription(
params, self.forward_publish_response)
response = ua.CreateSubscriptionResponse()
response.Parameters = result
_logger.info("sending create subscription response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteSubscriptionsRequest_Encoding_DefaultBinary
):
_logger.info("delete subscriptions request")
params = struct_from_binary(ua.DeleteSubscriptionsParameters, body)
results = await self.session.delete_subscriptions(
params.SubscriptionIds)
response = ua.DeleteSubscriptionsResponse()
response.Results = results
_logger.info("sending delte subscription response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.CreateMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("create monitored items request")
params = struct_from_binary(ua.CreateMonitoredItemsParameters,
body)
results = await self.session.create_monitored_items(params)
response = ua.CreateMonitoredItemsResponse()
response.Results = results
_logger.info("sending create monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.ModifyMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("modify monitored items request")
params = struct_from_binary(ua.ModifyMonitoredItemsParameters,
body)
results = await self.session.modify_monitored_items(params)
response = ua.ModifyMonitoredItemsResponse()
response.Results = results
_logger.info("sending modify monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.DeleteMonitoredItemsRequest_Encoding_DefaultBinary
):
_logger.info("delete monitored items request")
params = struct_from_binary(ua.DeleteMonitoredItemsParameters,
body)
results = await self.session.delete_monitored_items(params)
response = ua.DeleteMonitoredItemsResponse()
response.Results = results
_logger.info("sending delete monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.HistoryReadRequest_Encoding_DefaultBinary):
_logger.info("history read request")
params = struct_from_binary(ua.HistoryReadParameters, body)
results = await self.session.history_read(params)
response = ua.HistoryReadResponse()
response.Results = results
_logger.info("sending history read response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.RegisterNodesRequest_Encoding_DefaultBinary):
_logger.info("register nodes request")
params = struct_from_binary(ua.RegisterNodesParameters, body)
_logger.info("Node registration not implemented")
response = ua.RegisterNodesResponse()
response.Parameters.RegisteredNodeIds = params.NodesToRegister
_logger.info("sending register nodes response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.UnregisterNodesRequest_Encoding_DefaultBinary):
_logger.info("unregister nodes request")
params = struct_from_binary(ua.UnregisterNodesParameters, body)
response = ua.UnregisterNodesResponse()
_logger.info("sending unregister nodes response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.PublishRequest_Encoding_DefaultBinary):
_logger.info("publish request")
if not self.session:
return False
params = struct_from_binary(ua.PublishParameters, body)
data = PublishRequestData(requesthdr=requesthdr,
seqhdr=seqhdr,
algohdr=algohdr)
# Store the Publish Request (will be used to send publish answers from server)
self._publish_requests.append(data)
# If there is an enqueued result forward it immediately
if len(self._publish_results):
result = self._publish_results.popleft()
self.forward_publish_response(result)
await self.session.publish(params.SubscriptionAcknowledgements)
_logger.info("publish forward to server")
elif typeid == ua.NodeId(
ua.ObjectIds.RepublishRequest_Encoding_DefaultBinary):
_logger.info("re-publish request")
params = struct_from_binary(ua.RepublishParameters, body)
msg = self.session.republish(params)
response = ua.RepublishResponse()
response.NotificationMessage = msg
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
elif typeid == ua.NodeId(
ua.ObjectIds.CloseSecureChannelRequest_Encoding_DefaultBinary):
_logger.info("close secure channel request")
self._connection.close()
response = ua.CloseSecureChannelResponse()
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
return False
elif typeid == ua.NodeId(
ua.ObjectIds.CallRequest_Encoding_DefaultBinary):
_logger.info("call request")
params = struct_from_binary(ua.CallParameters, body)
results = await self.session.call(params.MethodsToCall)
response = ua.CallResponse()
response.Results = results
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr,
response)
else:
_logger.warning("Unknown message received %s", typeid)
raise ServiceError(ua.StatusCodes.BadNotImplemented)
return True
