Without knowing the requirements for the application, here is the mostly likely way I would approach the problem, then. - Create the BST in the main thread, and pass a pointer to it as part of each thread's data (using appropriate protection -- either critical sections or a reading-sempaphore-type setup). - After Accept is called (spawning the new connection), the thread first checks the BST to see if the IP for the connection is bad. If it is, it closes the connection immediately; if not, it continues on. You could also use a hash table instead of a BST and have the IP be the key, and a something useful as the value (e.g. the number of failed connections?). This would decrease your searching time even more. If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week Zac

See A COMPLETE SHBrowseForFolder wrapper class[^] _** **_ WhiteSky

G_S wrote: I'm looking for any kind of suggestion,articles, methodes,api to detect and prevent stack overflow on releases. Global variables. Stack-based arrays. Passing structures to functions by value. "The largest fire starts but with the smallest spark." - David Crow "Judge not by the eye but by the heart." - Native American Proverb

You will notice that the error is actually due to Stack Overflow since Reset recursively calls the destructor, which calls the next destructor which... you get the idea. The problem really is that your linked list is incorrect. Your nodes are linked lists? Your CLinked seems to try to be both a node and a linked list. There are other issues as well, but first you should go look at how other people implement linked lists. eg. template<class T> class LinkedList { public: class Node { public: Node* GetNext(); Node* GetPrev(); : : private: T element; Node \*pNext; Node \*pPrev; } void Reset(); : : private: Node *m_pHead; Node *m_pTail; int m_nCount; : : } -- modified at 23:36 Thursday 8th June, 2006

Thanks for the quick response. G_S

sprintf(str, "%I64d", num); 2) _atoi64(str); Maxwell Chen

I use this code snippet :suss: Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!