Subscribe(String,PubSubUpdateFlag) Method

This routine is to be used with blocking receive. If subscriptions are made with this routine and receive is not called, then the application will not receive any messages and will eventually be removed from the PubSub system. If the application requires asynchronous delivery through callbacks, then SubscribeCB should be used.

This version of subscribing is useful if the application wants to process messages in a synchronous manner from a special processing thread, or a pool of such threads.

If this routine is called after any subscriptions are made with callbacks, then an exception will be raised indicating the use of incompatible subscription semantics.

This form of subscription is used with the command. Unless the method is called, no messages will be delivered and the application will eventually be declared too slow by the engine.

• C#

PubSubConnection PS = new PubSubConnection();
PS.OpenConnection("192.168.10.10", 5051);
PS.Subscribe("mySystem.MyTopic", PubSubUpdateFlag.PS_INTEGRITY);

Target Platforms: For information on software requirements, refer to the AVEVA Enterprise SCADA Supported Configurations documentation.

Reference

PubSubConnection Class
PubSubConnection Members
Overload List
Receive
Receive