/* This work is licensed under a Creative Commons CCZero 1.0 Universal License. * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */ #include #include #include #include #include #include UA_Boolean running = true; static void stopHandler(int sign) { UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "received ctrl-c"); running = false; } /** * The PubSub connection example demonstrate the PubSub TransportLayer configuration and * the dynamic creation of PubSub Connections on runtime. */ int main(void) { signal(SIGINT, stopHandler); signal(SIGTERM, stopHandler); UA_Server *server = UA_Server_new(); UA_ServerConfig *config = UA_Server_getConfig(server); UA_ServerConfig_setDefault(config); /* Add the PubSubTransportLayer implementation to the server config. * The PubSubTransportLayer is a factory to create new connections * on runtime. The UA_PubSubTransportLayer is used for all kinds of * concrete connections e.g. UDP, MQTT, AMQP... */ config->pubsubTransportLayers = (UA_PubSubTransportLayer *) UA_malloc(sizeof(UA_PubSubTransportLayer)); if(!config->pubsubTransportLayers) { UA_Server_delete(server); return -1; } /* It is possible to use multiple PubSubTransportLayers on runtime. The correct factory * is selected on runtime by the standard defined PubSub TransportProfileUri's. */ config->pubsubTransportLayers[0] = UA_PubSubTransportLayerUDPMP(); config->pubsubTransportLayersSize++; /* Create a new ConnectionConfig. The addPubSubConnection function takes the * config and create a new connection. The Connection identifier is * copied to the NodeId parameter.*/ UA_PubSubConnectionConfig connectionConfig; memset(&connectionConfig, 0, sizeof(connectionConfig)); connectionConfig.name = UA_STRING("UDP-UADP Connection 1"); connectionConfig.transportProfileUri = UA_STRING("http://opcfoundation.org/UA-Profile/Transport/pubsub-udp-uadp"); connectionConfig.enabled = UA_TRUE; /* The address and interface is part of the standard * defined UA_NetworkAddressUrlDataType. */ UA_NetworkAddressUrlDataType networkAddressUrl = {UA_STRING_NULL , UA_STRING("opc.udp://224.0.0.22:4840/")}; UA_Variant_setScalar(&connectionConfig.address, &networkAddressUrl, &UA_TYPES[UA_TYPES_NETWORKADDRESSURLDATATYPE]); connectionConfig.publisherId.numeric = UA_UInt32_random(); /* Connection options are given as Key/Value Pairs. The available options are * maybe standard or vendor defined. */ UA_KeyValuePair connectionOptions[3]; connectionOptions[0].key = UA_QUALIFIEDNAME(0, "ttl"); UA_UInt32 ttl = 10; UA_Variant_setScalar(&connectionOptions[0].value, &ttl, &UA_TYPES[UA_TYPES_UINT32]); connectionOptions[1].key = UA_QUALIFIEDNAME(0, "loopback"); UA_Boolean loopback = UA_FALSE; UA_Variant_setScalar(&connectionOptions[1].value, &loopback, &UA_TYPES[UA_TYPES_BOOLEAN]); connectionOptions[2].key = UA_QUALIFIEDNAME(0, "reuse"); UA_Boolean reuse = UA_TRUE; UA_Variant_setScalar(&connectionOptions[2].value, &reuse, &UA_TYPES[UA_TYPES_BOOLEAN]); connectionConfig.connectionProperties = connectionOptions; connectionConfig.connectionPropertiesSize = 3; /* Create a new concrete connection and add the connection * to the current PubSub configuration. */ UA_NodeId connectionIdentifier; UA_StatusCode retval = UA_Server_addPubSubConnection(server, &connectionConfig, &connectionIdentifier); if(retval == UA_STATUSCODE_GOOD){ UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "The PubSub Connection was created successfully!"); } retval |= UA_Server_run(server, &running); UA_Server_delete(server); return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE; }