CONNECTED: Difference between revisions
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(Created page with "{{DISPLAYTITLE:_CONNECTED}} The _CONNECTED function returns the status of a TCP/IP connection handle. {{PageSyntax}} :{{Parameter|result&}} = _CONNECTED({{Parameter|connectionHandle&}}) {{PageDescription}} * The handle can come from the _OPENHOST, OPENCLIENT or _OPENCONNECTION QB64 TCP/IP functions. * Returns -1 if still connected or 0 if connection has ended/failed. * Do not rely solely on this function to check for ending communication. * Use "...") |
m (Protected "CONNECTED" ([Edit=Allow only autoconfirmed users] (indefinite) [Move=Allow only autoconfirmed users] (indefinite))) |
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Revision as of 16:11, 4 May 2022
The _CONNECTED function returns the status of a TCP/IP connection handle.
Syntax
- result& = _CONNECTED(connectionHandle&)
Description
- The handle can come from the _OPENHOST, OPENCLIENT or _OPENCONNECTION QB64 TCP/IP functions.
- Returns -1 if still connected or 0 if connection has ended/failed.
- Do not rely solely on this function to check for ending communication.
- Use "time-out" checking as well and CLOSE any suspect connections.
- If this function indicates the handle is not connected, any unread messages can still be read using GET #.
- Even if this function indicates the handle is not connected, it is important to CLOSE the connection anyway or important resources cannot be reallocated.
See also