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function | TCPServiceIsOpen |
Related Concepts | Other Library Functions |
Library: TCP/IP
Include: omioprot.xin, omtcp.xin |
Returns: Boolean
Returns true if the TCP service is open, and false otherwise. |
define external switch TCPServiceIsOpen value TCPService this-TCPService as TCPServiceIsOpen
This function checks whether a TCP service is open, regardless of whether it's just been declared or is in error. It is always valid to call this function.
Argument:
Example
do unless TCPServiceIsOpen omdemo-service output "not open %n" done
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