Elgg_1.10_1.11_elggchat_v1.10.5.zip
That doesn't really say anything. Please post a link to the plugin project or the version control repository.
He means mine (https://community.elgg.org/plugins/1829094).
There's a polling interval (minimum 5 seconds) for checking of availability of new messages. If no new messages are posted over several polling intervals (i.e. session idle) the interval is increased up to a certain maximum polling interval to reduce server load.
You can adjust the polling interval and the upper limit of the polling interval in the Elggchat plugin settings.
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Security issues should be reported to security@elgg.org!
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