Add config option that determines the maximum allowed time between the last received CMSG_CHAR_ENUM and another incoming packet, and will disconnect the peer if this time limit is exceeded.

In other words, a time limit in which idlers can stay logged in on the character selection screen before they are disconnected.
Fixes issue #335

--HG--
branch : trunk

src/game/World.cpp

@@ -648,6 +648,7 @@ void World::LoadConfigSettings(bool reload)
     else
         m_configs[CONFIG_SOCKET_SELECTTIME] = sConfig.GetIntDefault("SocketSelectTime", DEFAULT_SOCKET_SELECT_TIME);
 
+    m_configs[CONFIG_SOCKET_TIMEOUTTIME] = sConfig.GetIntDefault("SocketTimeOutTime", 900000);
     m_configs[CONFIG_GROUP_XP_DISTANCE] = sConfig.GetIntDefault("MaxGroupXPDistance", 74);
     /// \todo Add MonsterSight and GuarderSight (with meaning) in Trinityd.conf or put them as define
     m_configs[CONFIG_SIGHT_MONSTER] = sConfig.GetIntDefault("MonsterSight", 50);

src/game/World.h

@@ -106,6 +106,7 @@ enum WorldConfigs
     CONFIG_INTERVAL_DISCONNECT_TOLERANCE,
     CONFIG_PORT_WORLD,
     CONFIG_SOCKET_SELECTTIME,
+    CONFIG_SOCKET_TIMEOUTTIME,
     CONFIG_GROUP_XP_DISTANCE,
     CONFIG_SIGHT_MONSTER,
     CONFIG_SIGHT_GUARDER,

src/game/WorldSocket.cpp

@@ -110,7 +110,8 @@ m_OutBufferSize (65536),
 m_OutActive (false),
 m_Seed (static_cast<uint32> (rand32 ())),
 m_OverSpeedPings (0),
-m_LastPingTime (ACE_Time_Value::zero)
+m_LastPingTime (ACE_Time_Value::zero),
+m_TimeOutTime (0)
 {
     reference_counting_policy ().value (ACE_Event_Handler::Reference_Counting_Policy::ENABLED);
 }
@@ -407,6 +408,10 @@ int WorldSocket::Update (void)
     if (closing_)
         return -1;
 
+    if (m_TimeOutTime &&
+        time(NULL) >= m_TimeOutTime)
+        return -1;
+    
     if (m_OutActive || m_OutBuffer->length () == 0)
         return 0;
 
@@ -656,6 +661,20 @@ int WorldSocket::ProcessIncoming (WorldPacket* new_pct)
             {
                 ACE_GUARD_RETURN (LockType, Guard, m_SessionLock, -1);
 
+                /* The m_TimeOutTime measure is put in to be able to automatically disconnect connections
+                that are sitting idle on the character select screen. After a period of being AFK in the realm,
+                the client will be automatically sent back to the character selection screen. In order to pick up
+                the idle connections and prevent they are sitting there, taking up slots for the realm, we'll check if the packet
+                that was sent is CMSG_CHAR_ENUM and initiate the timeout timer that will be checked on WorldSocket::Update.
+                */
+                if (opcode == CMSG_CHAR_ENUM)
+                    m_TimeOutTime = time(NULL) + sWorld.getConfig(CONFIG_SOCKET_TIMEOUTTIME) / IN_MILISECONDS;
+                /* If the packet is CMSG_PLAYER_LOGIN opcode, it means our connection is not idle, we're logging into the world.
+                   Until we receive our next CMSG_CHAR_ENUM packet, we can disregard the timeout timer.
+                */
+                else if (opcode == CMSG_PLAYER_LOGIN)
+                    m_TimeOutTime = 0;
+
                 if (m_Session != NULL)
                 {
                     // OK ,give the packet to WorldSession

src/game/WorldSocket.h

@@ -232,6 +232,10 @@ class WorldSocket : protected WorldHandler
         bool m_OutActive;
 
         uint32 m_Seed;
+        
+        /// The defined time where the socket will be forced to close. This is 
+        /// to detect and close idle connections.
+        time_t m_TimeOutTime;
 };
 
 #endif  /* _WORLDSOCKET_H */

src/trinitycore/trinitycore.conf.dist

@@ -124,6 +124,11 @@ EAIErrorLevel = 2
 #        Socket select time (in milliseconds)
 #        Default: 10000 (10 secs)
 #
+#    SocketTimeOutTime
+#        Time in milliseconds afer which a connection sitting idle on the character
+#        selection screen is disconnected.
+#        Default: 900000 (15 minutes)
+#
 #    GridCleanUpDelay
 #        Grid clean up delay (in milliseconds)
 #        Default: 300000 (5 min)
@@ -217,6 +222,7 @@ SaveRespawnTimeImmediately = 1
 MaxOverspeedPings = 2
 GridUnload = 1
 SocketSelectTime = 10000
+SocketTimeOutTime = 900000
 GridCleanUpDelay = 300000
 MapUpdateInterval = 100
 ChangeWeatherInterval = 600000