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The _OPENHOST function opens a Host which listens for new connections and returns a Host status handle.


hostHandle = _OPENHOST("TCP/IP:8080")


  • Creates an Illegal Function Call error if called with a string argument of the wrong syntax.
  • The port used in the syntax example is 8080.
  • Valid hostHandle values are negative numbers.
  • If the syntax is correct but they fail to begin/connect a hostHandle of 0 is returned.
  • Always check if the handle returned is 0 (failed) before continuing.
  • CLOSE hostHandle closes the host. A failed handle value of 0 does not need to be closed.

See also

Keyword Reference - Alphabetical
Keyword Reference - By usage
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