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"We have an interactive socket program that connects to a host system that sends and receives data.
If something happens to the connection while the interactive client program is receiving or waiting to receive data, the program just hangs on the receive api. It never ends. We tried to use the Socket Option SO_RCVTIMEO, but when setting it, it returns an error 3021 - "Value specified for the argument is not correct."
We have found articles saying not the use this method, but to use the alarm signal or select API to perform timeouts on sockets. Since our program is a client side socket program we thought the select API would not be appropriate and proceeded to code the socket program to use the alarm signals.
After researching it and reviewing some code examples, we added the logic to the program. When the program runs with the alarm signal logic, when the time out interval is reached the interactive session is ended and the user is put back to a sign on screen.
Does anyone know the best way to handle a time out while waiting for data to be received by an interactive client socket program, using RPGLE?"
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