Register a trace procedure for a virtual server.
typedef void (Ns_TraceProc) (void *context, Ns_Conn *conn); Ns_ProcHandle Ns_RegisterServerTrace( char *hServer, Ns_TraceProc *proc, void *context );
The Ns_RegisterServerTrace function registers proc
as a trace for the specified virtual server. The server calls all trace procedures after every HTTP connection with the context and the Ns_Conn for that connection. The procedures are run in last-registered first-run order. A trace procedure is often used for logging.