Player restart - fix unexpected playback start on reconnects

Changelog8.html

@@ -68,6 +68,7 @@ <h2><a name="v8.3.0" id="v8.3.0"></a>Version 8.3.0</h2>
 		<li>Prevent a server crash while re-building the fulltext search index with huge collections.</li>
 		<li>Don't show online only artists when a virtual library view tells us to do so.</li>
 		<li>Fix IO::Socket::SSL initialization in the scanner's sync http lookup code.</li>
+		<li><a href="https://github.com/Logitech/slimserver/pull/797">#797</a> - Fix Power off/Power on behaviour - Player would resume playback of stale track when reconnecting, although nothing to be resumed.</li>
 	</ul>
 	<br />
 

Slim/Networking/Slimproto.pm

@@ -278,6 +278,12 @@ sub slimproto_close {
 				# may change firmware versions before coming back
 				$client->_needsUpgrade(undef);
 
+				# Save client playback state, as if the player is turned off.
+				# This must be done *_now_*, before the client reconnects, otherwise
+				# the client->reconnect method may act on stale data. In that case,
+				# the player may start playback when it absolutely should not.
+				persistPlaybackStateForPowerOff($client);
+
 				# set timer to forget client
 				if ( $forget_disconnected_time ) {
 					main::INFOLOG && $log->is_info && $log->info("setting timer to forget client in $forget_disconnected_time secs");
@@ -295,7 +301,7 @@ sub slimproto_close {
 	delete($sock2client{$clientsock});
 }
 
-sub forget_disconnected_client {
+sub persistPlaybackStateForPowerOff {
 	my $client = shift;
 	my $cprefs = preferences('server')->client($client);
 
@@ -311,6 +317,10 @@ sub forget_disconnected_client {
 		$cprefs->set('positionAtDisconnect', $position);
 		main::INFOLOG && $log->is_info && $log->info("disconnected player position $position secs");
 	}
+}
+
+sub forget_disconnected_client {
+	my $client = shift;
 
 	main::INFOLOG && $log->info("forgetting disconnected client");