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Scans T-Server for one or more incoming messages and special events for a time interval specified by the parameter timeout, and processes the timers and the pending messages as specified by the parameter scan_mode. This function is used to synchronize with the socket operation while operating in asynchronous mode, or in synchronous mode when ADDP is used.


Name Description
server Local server handle to the T-Server in question.
timeout Time interval, in seconds, during which a message from T-Server will be sought.
scan_mode The scanning mode.

Return Values

>0 — Number of received messages.

0 — The timeout is expired.

-1 — Error condition. Returned to the application if the request has not been processed due to an incorrect function statement.


This function does not generate any messages to T-Server.

This page was last edited on March 17, 2016, at 18:07.
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