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The Lounge What is on Your Mind? PubNub Live Chat Beta Testing Post 303034867 by pubnubcraig on Wednesday 8th of May 2019 10:40:28 AM
Old 05-08-2019
short polling the hereNow?

Neo -

If I understand, you are calling hereNow every 300ms, which is a lot.
Assuming that is the case, you should only call hereNow upon successful subscribe to a channel (in the status callback for PNConnectedCategory).

When you subscribe to a channel(s), subscribe withPresence:true to get the realtime updates for others' join, leave, timeout and state-change.

Not sure what the presenceInterval property would do in the subscribe. I think you are assuming that presence is polling for changes. But it is actually receiving new presence events (in the addListener's presence callback) just like you receive published messages in the message callback. withPresence:true actually just adds an additional channel for each channel you subscribe to. If you subscribe to channel abc then withPresence:true will also add channel abc-pnpres.

Hope that provides some insights.

Cheers
Craig
 

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SPACEWALK-CHANNEL(8)						   Red Hat, Inc.					      SPACEWALK-CHANNEL(8)

NAME
spacewalk-channel - Subscribe to or unsubscribe system from channel. SYNOPSIS
spacewalk-channel [options] DESCRIPTION
spacewalk-channel allows you to subscribe to and unsubscribe from specified channels via the command line. A visit to the Red Hat Network (or Spacewalk) website isn't required. OPTIONS
-l, --list Print a list of channel(s) that you are currently subscribed to. -L, --available-channels Print a list of all available child channels. -a, --add You are subscribing system to given channel(s). You have to specify --user and --password. -r, --remove You are unsubscribing system to given channel(s). You have to specify --user and --password. -u, --user Your username used to register the system with and for Red Hat Network, RHN Satellite or Spacewalk. If you do not enter this option and it is required, you will be prompted. -p, --password The password associated with the username specified with the --user option. This is an unencrypted password. If you do not enter this option and it is required, you will be prompted. -c, --channel Label of channel you want to subscribe to or unsubscribe from. Can be specified multiple times. -v, --verbose Print out successfull action. -h, --help Show a help message and exit. NOTE
The addition and removal of channels is mutually exclusive, please use the command twice. EXAMPLES
Subscribe to two channels: spacewalk-channel --add -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password Unsubscribe from channel: spacewalk-channel --remove -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password List subscribed channels: spacewalk-channel --list SEE ALSO
rhnplugin(8), rhn_register(8), up2date(5). AUTHORS
Miroslav Suchy <msuchy@redhat.com> BUGS
Report bugs to <http://bugzilla.redhat.com>. COPYRIGHT
Copyright (C) 2009-2010 Red Hat, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. Linux 2010 August 30 SPACEWALK-CHANNEL(8)
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