| /* This work is licensed under a Creative Commons CCZero 1.0 Universal License. |
| * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */ |
| /* |
| * A simple server instance which registers with the discovery server (see server_lds.c). |
| * Before shutdown it has to unregister itself. |
| */ |
| |
| #include <open62541/client.h> |
| #include <open62541/client_config_default.h> |
| #include <open62541/plugin/log_stdout.h> |
| #include <open62541/server.h> |
| #include <open62541/server_config_default.h> |
| |
| #include <signal.h> |
| #include <stdlib.h> |
| |
| #define DISCOVERY_SERVER_ENDPOINT "opc.tcp://localhost:4840" |
| |
| UA_Boolean running = true; |
| |
| static void stopHandler(int sign) { |
| UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "received ctrl-c"); |
| running = false; |
| } |
| |
| static UA_StatusCode |
| readInteger(UA_Server *server, const UA_NodeId *sessionId, |
| void *sessionContext, const UA_NodeId *nodeId, |
| void *nodeContext, UA_Boolean includeSourceTimeStamp, |
| const UA_NumericRange *range, UA_DataValue *value) { |
| UA_Int32 *myInteger = (UA_Int32*)nodeContext; |
| value->hasValue = true; |
| UA_Variant_setScalarCopy(&value->value, myInteger, &UA_TYPES[UA_TYPES_INT32]); |
| |
| // we know the nodeid is a string |
| UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "Node read %.*s", |
| (int)nodeId->identifier.string.length, |
| nodeId->identifier.string.data); |
| UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, |
| "read value %i", *(UA_UInt32 *)myInteger); |
| return UA_STATUSCODE_GOOD; |
| } |
| |
| static UA_StatusCode |
| writeInteger(UA_Server *server, const UA_NodeId *sessionId, |
| void *sessionContext, const UA_NodeId *nodeId, |
| void *nodeContext, const UA_NumericRange *range, |
| const UA_DataValue *value) { |
| UA_Int32 *myInteger = (UA_Int32*)nodeContext; |
| if(value->hasValue && UA_Variant_isScalar(&value->value) && |
| value->value.type == &UA_TYPES[UA_TYPES_INT32] && value->value.data) |
| *myInteger = *(UA_Int32 *)value->value.data; |
| |
| // we know the nodeid is a string |
| UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "Node written %.*s", |
| (int)nodeId->identifier.string.length, |
| nodeId->identifier.string.data); |
| UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, |
| "written value %i", *(UA_UInt32 *)myInteger); |
| return UA_STATUSCODE_GOOD; |
| } |
| |
| int main(int argc, char **argv) { |
| signal(SIGINT, stopHandler); /* catches ctrl-c */ |
| signal(SIGTERM, stopHandler); |
| |
| UA_Server *server = UA_Server_new(); |
| UA_ServerConfig *config = UA_Server_getConfig(server); |
| // use port 0 to dynamically assign port |
| UA_ServerConfig_setMinimal(config, 0, NULL); |
| |
| UA_String_clear(&config->applicationDescription.applicationUri); |
| config->applicationDescription.applicationUri = |
| UA_String_fromChars("urn:open62541.example.server_register"); |
| config->discovery.mdns.mdnsServerName = UA_String_fromChars("Sample Server"); |
| // See http://www.opcfoundation.org/UA/schemas/1.03/ServerCapabilities.csv |
| //config.serverCapabilitiesSize = 1; |
| //UA_String caps = UA_String_fromChars("LDS"); |
| //config.serverCapabilities = ∩︀ |
| |
| /* add a variable node to the address space */ |
| UA_Int32 myInteger = 42; |
| UA_NodeId myIntegerNodeId = UA_NODEID_STRING(1, "the.answer"); |
| UA_QualifiedName myIntegerName = UA_QUALIFIEDNAME(1, "the answer"); |
| UA_DataSource dateDataSource; |
| dateDataSource.read = readInteger; |
| dateDataSource.write = writeInteger; |
| UA_VariableAttributes attr = UA_VariableAttributes_default; |
| attr.description = UA_LOCALIZEDTEXT("en-US", "the answer"); |
| attr.displayName = UA_LOCALIZEDTEXT("en-US", "the answer"); |
| |
| UA_Server_addDataSourceVariableNode(server, myIntegerNodeId, |
| UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER), |
| UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), |
| myIntegerName, UA_NODEID_NULL, attr, dateDataSource, |
| &myInteger, NULL); |
| |
| UA_Client *clientRegister = UA_Client_new(); |
| UA_ClientConfig_setDefault(UA_Client_getConfig(clientRegister)); |
| |
| // periodic server register after 10 Minutes, delay first register for 500ms |
| UA_StatusCode retval = |
| UA_Server_addPeriodicServerRegisterCallback(server, clientRegister, DISCOVERY_SERVER_ENDPOINT, |
| 10 * 60 * 1000, 500, NULL); |
| // UA_StatusCode retval = UA_Server_addPeriodicServerRegisterJob(server, |
| // "opc.tcp://localhost:4840", 10*60*1000, 500, NULL); |
| if(retval != UA_STATUSCODE_GOOD) { |
| UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, |
| "Could not create periodic job for server register. StatusCode %s", |
| UA_StatusCode_name(retval)); |
| UA_Client_disconnect(clientRegister); |
| UA_Client_delete(clientRegister); |
| UA_Server_delete(server); |
| UA_Server_delete(server); |
| return EXIT_FAILURE; |
| } |
| |
| retval = UA_Server_run(server, &running); |
| |
| if(retval != UA_STATUSCODE_GOOD) { |
| UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, |
| "Could not start the server. StatusCode %s", |
| UA_StatusCode_name(retval)); |
| UA_Client_disconnect(clientRegister); |
| UA_Client_delete(clientRegister); |
| UA_Server_delete(server); |
| return EXIT_FAILURE; |
| } |
| |
| // Unregister the server from the discovery server. |
| retval = UA_Server_unregister_discovery(server, clientRegister); |
| //retval = UA_Server_unregister_discovery(server, "opc.tcp://localhost:4840" ); |
| if(retval != UA_STATUSCODE_GOOD) |
| UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, |
| "Could not unregister server from discovery server. StatusCode %s", |
| UA_StatusCode_name(retval)); |
| |
| UA_Client_disconnect(clientRegister); |
| UA_Client_delete(clientRegister); |
| UA_Server_delete(server); |
| return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE;; |
| } |