Added session timeouts.

The parameter 'connection_timeout' for services takes a value as seconds.
All sessions that have been idle for longer than this will be disconnected.

server/core/service.c

@@ -57,6 +57,7 @@
 #include <log_manager.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <housekeeper.h>
 
 /** Defined in log_manager.cc */
 extern int            lm_enabled_logfiles_bitmask;
@@ -431,6 +432,8 @@ int		listeners = 0;
 		service->stats.started = time(0);
 	}
 
+	hktask_add("connection_timeout",session_close_timeouts,NULL,5);
+
 	return listeners;
 }
 
@@ -803,6 +806,23 @@ serviceEnableRootUser(SERVICE *service, int action)
 	return 1;
 }
 
+/**
+ * Sets the session timeout for the service.
+ * @param service Service to configure
+ * @param val Timeout in seconds
+ * @return 1 on success, 0 when the value is invalid
+ */
+int
+serviceSetTimeout(SERVICE *service, int val)
+{
+
+    if(val < 0)
+	return 0;
+    service->conn_timeout = val;
+
+    return 1;
+}
+
 /**
  * Trim whitespace from the from an rear of a string
  *