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Telnet usage: Difference between revisions
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→subscribe and unsubscribe: http://forum.flightgear.org/viewtopic.php?f=18&t=21561&p=197647&hilit=subscribe+unsubscribe#p197647
m (→Telnet Server: fixed link) |
m (→subscribe and unsubscribe: http://forum.flightgear.org/viewtopic.php?f=18&t=21561&p=197647&hilit=subscribe+unsubscribe#p197647) |
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=== subscribe and unsubscribe=== | === subscribe and unsubscribe=== | ||
{{Caution|{{FGCquote | |||
|unlike the 'get'/set commands, the 'subscribe' command needs its argument to be an absolute path from the root, e.g.: | |||
<syntaxhighlight lang="teraterm"> | |||
subscribe /sim/time/real/seconds | |||
</syntaxhighlight> | |||
|{{cite web |url=http://forum.flightgear.org/viewtopic.php?p=197611#p197611 | |||
|title=<nowiki>Re: Virtual Panel/Control from Web Browser</nowiki> | |||
|author=<nowiki>Kabuki</nowiki> | |||
|date=<nowiki>Fri Jan 10</nowiki> | |||
}} | |||
}} | |||
}} | |||
You'll find two new telnet commands in FG >= 2.8 that provide a very simple "subscription" mechanism, so that you can register listeners instead of using polling to get property updates. | You'll find two new telnet commands in FG >= 2.8 that provide a very simple "subscription" mechanism, so that you can register listeners instead of using polling to get property updates. | ||
Obviously, that makes only sense for non-FDM (non-tied) properties and properties that are not updated at frame rate. | Obviously, that makes only sense for non-FDM (non-tied) properties and properties that are not updated at frame rate. | ||