diff --git a/examples/client_subscription_loop.c b/examples/client_subscription_loop.c index 0e4cf19e4..50f4fe128 100644 --- a/examples/client_subscription_loop.c +++ b/examples/client_subscription_loop.c @@ -14,18 +14,6 @@ #include #include -#include "common.h" - -#include -#include - -static UA_Boolean running = true; - -static void stopHandler(int sign) { - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Received Ctrl-C"); - running = 0; -} - static void handler_currentTimeChanged(UA_Client *client, UA_UInt32 subId, void *subContext, UA_UInt32 monId, void *monContext, UA_DataValue *value) { @@ -35,19 +23,23 @@ handler_currentTimeChanged(UA_Client *client, UA_UInt32 subId, void *subContext, UA_DateTimeStruct dts = UA_DateTime_toStruct(raw_date); UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "date is: %02u-%02u-%04u %02u:%02u:%02u.%03u", - dts.day, dts.month, dts.year, dts.hour, dts.min, dts.sec, dts.milliSec); + dts.day, dts.month, dts.year, dts.hour, dts.min, + dts.sec, dts.milliSec); } } static void -deleteSubscriptionCallback(UA_Client *client, UA_UInt32 subscriptionId, void *subscriptionContext) { +deleteSubscriptionCallback(UA_Client *client, UA_UInt32 subscriptionId, + void *subscriptionContext) { UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Subscription Id %u was deleted", subscriptionId); } static void -subscriptionInactivityCallback (UA_Client *client, UA_UInt32 subId, void *subContext) { - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Inactivity for subscription %u", subId); +subscriptionInactivityCallback (UA_Client *client, UA_UInt32 subId, + void *subContext) { + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "Inactivity for subscription %u", subId); } static void @@ -85,14 +77,16 @@ createSubscriptionCallback(UA_Client *client, void *userdata, req.itemsToCreateSize = 1; req.subscriptionId = r->subscriptionId; - UA_Client_DataChangeNotificationCallback dataChangeNotificationCallback[1] = { handler_currentTimeChanged }; + UA_Client_DataChangeNotificationCallback dataChangeNotificationCallback[1] = + { handler_currentTimeChanged }; UA_StatusCode retval = UA_Client_MonitoredItems_createDataChanges_async(client, req, NULL, dataChangeNotificationCallback, NULL, monCallback, NULL, NULL); if (retval != UA_STATUSCODE_GOOD) UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, - "UA_Client_MonitoredItems_createDataChanges_async ", UA_StatusCode_name(retval)); + "UA_Client_MonitoredItems_createDataChanges_async ", + UA_StatusCode_name(retval)); } } @@ -101,16 +95,20 @@ stateCallback(UA_Client *client, UA_SecureChannelState channelState, UA_SessionState sessionState, UA_StatusCode recoveryStatus) { switch(channelState) { case UA_SECURECHANNELSTATE_CLOSED: - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "The client is disconnected"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "The client is disconnected"); break; case UA_SECURECHANNELSTATE_HEL_SENT: - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Waiting for ack"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "Waiting for ack"); break; case UA_SECURECHANNELSTATE_OPN_SENT: - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Waiting for OPN Response"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "Waiting for OPN Response"); break; case UA_SECURECHANNELSTATE_OPEN: - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "A SecureChannel to the server is open"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "A SecureChannel to the server is open"); break; default: break; @@ -118,55 +116,41 @@ stateCallback(UA_Client *client, UA_SecureChannelState channelState, switch(sessionState) { case UA_SESSIONSTATE_ACTIVATED: { - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "A session with the server is activated"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "A session with the server is activated"); /* A new session was created. We need to create the subscription. */ /* Create a subscription */ UA_CreateSubscriptionRequest request = UA_CreateSubscriptionRequest_default(); - UA_StatusCode retval = - UA_Client_Subscriptions_create_async(client, request, NULL, NULL, deleteSubscriptionCallback, - createSubscriptionCallback, NULL, NULL); + UA_StatusCode retval = + UA_Client_Subscriptions_create_async(client, request, NULL, NULL, + deleteSubscriptionCallback, + createSubscriptionCallback, + NULL, NULL); if (retval != UA_STATUSCODE_GOOD) UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, - "UA_Client_Subscriptions_create_async ", UA_StatusCode_name(retval)); + "UA_Client_Subscriptions_create_async ", + UA_StatusCode_name(retval)); } break; case UA_SESSIONSTATE_CLOSED: - UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, "Session disconnected"); + UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, + "Session disconnected"); break; default: break; } } -int -main(void) { - signal(SIGINT, stopHandler); /* catches ctrl-c */ - +int main(void) { UA_Client *client = UA_Client_new(); UA_ClientConfig *cc = UA_Client_getConfig(client); - UA_ClientConfig_setDefault(cc); - /* Set stateCallback */ + /* Set callbacks */ cc->stateCallback = stateCallback; cc->subscriptionInactivityCallback = subscriptionInactivityCallback; - /* Endless loop runAsync */ - while(running) { - /* if already connected, this will return GOOD and do nothing */ - /* if the connection is closed/errored, the connection will be reset and then reconnected */ - /* Alternatively you can also use UA_Client_getState to get the current state */ - UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840"); - if(retval != UA_STATUSCODE_GOOD) { - UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_APPLICATION, - "Not connected. Retrying to connect in 1 second"); - /* The connect may timeout after 1 second (see above) or it may fail immediately on network errors */ - /* E.g. name resolution errors or unreachable network. Thus there should be a small sleep here */ - sleep_ms(1000); - continue; - } - - UA_Client_run_iterate(client, 1000); - } + /* Run the client until ctrl-c */ + UA_Client_runUntilInterrupt(client); /* Clean up */ UA_Client_delete(client); /* Disconnects the client internally */