Please forgive me if incorrect forum. Tried posting to Developer forum
but don't have access.
I have comet fully functional but have come across an issue and not sure
if is a comet or LMS notification. I don't think is a 7.9 bug per se,
but may be a limitation of LMS.
1. Have a working subscription to serverstatus every 60 seconds.
(channel "client/serverStatus")
2. Upon first ServerStatus Notification, if the target player is in the
players loop, I open a subscription using channel named
"client/playerTime/<PLAYER MAC>" with command <PLAYER_MAC> status - 0
subscribe:10 tags:blah-blah
3. Upon first playerStatus notification from #2 above, if the target
player is mode="play", I open a 2nd subscription using channel named
"client/playerTime/<PLAYER MAC>" with command <PLAYER_MAC> status - 0
subscribe:1
The intent of Channel #3 is to track only play time when the player is
playing. When playback stops, Channel #3 will unsubscribed
successfully.
Once steps 1, 2, 3 are complete, I continue to get events for channel
#1, I don't receive another notification for Channel #2. I however,
receive notifications for Channel #3 until such time as I unsubscribe.
I have observed 2 things. Once channel #3 is established, subscriptions
are delivered there. If I unsubscribe Channel #3, then events for #2
are still not delivered. I have to unsubscribe/resubscribe for #2 to
get things working again. So, one approach is to switch between 2
subscriptions using the same commands but with different subscribe time
values.
The questions I have are as follows:
1. Is there a limitation in the server that, via comet, prevents 2
different player status subscriptions (different parameters/times) from
being serviced using single comet connection?
2. If no limitation exist, then does anyone have guidance as to what I
need to do here? Are 2 comet channels as mentioned in other threads the
only possible solution?
Thoughts appreciated...
Thanks,
Lyndel
Here is the JS code I am using that will hopefully illustrates the 3
registrations I am doing.
function sendServerSubscribe()
{
if (isNaN(serverSubscribeId))
serverSubscribeId = nextCometRequestId();
else
sendServerUnsubscribe();
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),[createSubscribeRequest(
cometClientId,serverSubscribeId,
"slim/serverStatus",
["", ["serverstatus", 0, 50,
'prefs:libraryname',
"subscribe:" + serverSubscribeSeconds]])]);
}
function sendServerUnsubscribe()
{
if (isNaN(serverSubscribeId))
return;
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),[createUnsubscribeRequest(
cometClientId,serverSubscribeId,
"slim/serverStatus")]);
serverSubscribeId = NaN;
}
function sendPlayerSubscribePlayTime()
{
if (isNaN(playerSubscribeIdPlayTime))
playerSubscribeIdPlayTime = nextCometRequestId();
else
{
sendPlayerUnsubscribePlayTime();
playerSubscribeIdPlayTime = nextCometRequestId();
}
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),[createSubscribeRequest(
cometClientId,playerSubscribeIdPlayTime,
"slim/playerTime/" + monitoredPlayerId,
[monitoredPlayerId, ["status", "-", 0,
"subscribe:1"]])]);
}
function sendPlayerUnsubscribePlayTime()
{
if (isNaN(playerSubscribeIdPlayTime))
return;
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),
[createUnsubscribeRequest(
cometClientId,playerSubscribeIdPlayTime,
"slim/playerTime/" + monitoredPlayerId)]);
playerSubscribeIdPlayTime = NaN;
}
function sendPlayerSubscribe()
{
if (isNaN(playerSubscribeId))
playerSubscribeId = nextCometRequestId();
else
{
sendPlayerUnsubscribe();
playerSubscribeId = nextCometRequestId();
}
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),
[createSubscribeRequest(
cometClientId,playerSubscribeId,
"slim/playerStatus/" + monitoredPlayerId,
[monitoredPlayerId, ["status", "-", 1, "subscribe:10",
"tags:cgABbehldiqtyrSuoKLNTI"]])]);
}
function sendPlayerUnsubscribe()
{
if (isNaN(playerSubscribeId))
return;
writeCometHttpMessage(bindReadyStateChangeCompleted(createAndOpenCometRequest()),
[createUnsubscribeRequest(
cometClientId,playerSubscribeId,
"slim/playerStatus/" + monitoredPlayerId)]);
playerSubscribeId = NaN;
}
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