OPENHOST: Difference between revisions
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(Created page with "{{DISPLAYTITLE:_OPENHOST}} The _OPENHOST function opens a Host which listens for new connections and returns a Host status handle. {{PageSyntax}} : {{Parameter|hostHandle}} = _OPENHOST('''"TCP/IP:8080"''') {{PageDescription}} * 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 {{Parameter|hostHandle}} values are negative numbers. * If the syntax i...") |
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Revision as of 09:34, 2 July 2022
The _OPENHOST function opens a Host which listens for new connections and returns a Host status handle.
Syntax
- hostHandle = _OPENHOST("TCP/IP:8080")
Description
- 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
- _OPENCONNECTION, _OPENCLIENT
- _CONNECTED, _CONNECTIONADDRESS
- Email Demo, Inter-Program Data Sharing Demo
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