fix(session): parse the owner key without assuming the pod id

Emby.Server.Implementations/Session/RedisSessionDirectory.cs

@@ -25,7 +25,7 @@ public sealed class RedisSessionDirectory : ISessionDirectory
     private const string OwnerKeyPrefix = "jellyfin:sessionowner:";
 
     /// <summary>
-    /// Lua script for an atomic ownership claim. The owner key holds <c>pod|connectedTicks</c>, where
+    /// Lua script for an atomic ownership claim. The owner key holds <c>connectedTicks|pod</c>, where
     /// the ticks are zero for an instance that holds no connection. A claim by another instance is
     /// refused unless its connection is newer than the recorded one, so the instance holding the live
     /// connection keeps ownership however many requests the others serve.
@@ -34,13 +34,13 @@ public sealed class RedisSessionDirectory : ISessionDirectory
 local current = redis.call('GET', KEYS[1])
 if current then
     local separator = string.find(current, '|', 1, true)
-    local owner = string.sub(current, 1, separator - 1)
-    local connected = tonumber(string.sub(current, separator + 1))
+    local connected = tonumber(string.sub(current, 1, separator - 1))
+    local owner = string.sub(current, separator + 1)
     if owner ~= ARGV[1] and connected > 0 and tonumber(ARGV[2]) <= connected then
         return 0
     end
 end
-redis.call('SET', KEYS[1], ARGV[1] .. '|' .. ARGV[2], 'PX', ARGV[4])
+redis.call('SET', KEYS[1], ARGV[2] .. '|' .. ARGV[1], 'PX', ARGV[4])
 redis.call('SET', KEYS[2], ARGV[3], 'PX', ARGV[4])
 return 1";
 
@@ -52,7 +52,7 @@ return 1";
 local current = redis.call('GET', KEYS[1])
 if not current then return 0 end
 local separator = string.find(current, '|', 1, true)
-if string.sub(current, 1, separator - 1) ~= ARGV[1] then return 0 end
+if string.sub(current, separator + 1) ~= ARGV[1] then return 0 end
 redis.call('DEL', KEYS[1], KEYS[2])
 return 1";