Error 1 to close TCP

Hello

I have a simple Client TCP (ClientSendRx.vi) that receives the string from the end of server (TCPServer.vi) and displays the received string. I am facing the following problems:

1. when I press the button to stop at ClientSendRx.vi, I get "1 error has occurred to TCP connection close. What should have happened is that the 'Stop' button should stop the while loop and the TCP connection must have closed and lit Boolean or Boolean 2 LED, function of the error state.

2. under the debug mode, when I hit stop at ClientSendRx.vi, it passes the value from False to True, but does not stop the while loop as it does not in debug mode.

Please indicate where I can go wrong.

Thank you.

Kind regards

H.

AJMAL says:
Check this box

UH... AJMAL, what happens in the world, do the SMTP screw has to do with the above question? Aside from the fact that he mentions error 1 I don't see any impact of this KB article on this issue.

OP: You have two different problems:

  • You hid the code. In the ClientSendRx, there is a TCP connection, hidden behind the loop. Move the loop and you'll see. What happens, is that you close a connection that is already closed. Where the error 1.
  • Boolean values will be light never because you don't have anything wired to them. You actually connect a value for them. Otherwise they are abandoned just there looking pretty.

In general, it is not wise to wire a constant Boolean to a Terminal loop condition, as you did in the VI server, because this creates an infinite loop. It must wire a Boolean control so you can actually stop the loop without having to resort to the Abort button.

Tip: Use the empty/path string? function rather than check if the length of the string is zero.

Tags: NI Software

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