2007/7/6, Fabio Margarido <[EMAIL PROTECTED]>: > first of all, thanks a lot for the new documentation on statistics related > tags, it's been very helpful. > What I'd like to do now is take statistics one step further: > 1) Is it possible to query the stack for statistics passing some kind of > parameters (like asking for the number of retransmissions to target IP > x.x.x.x, or number of retransmissions of INVITEs)? - I'm guessing no
No, not at the moment. > 2) If not, would it be hard to do? Add a custom callback for updating the application-specific statistics. For instance, each time the nta updates statistics it could invoke a application specific callback with prototype like stat_callback( nta_agent_magic_t *context, tag_type_t item, msg_t *message, sip_t *sip_headers); where event would be a particular ntatag_s_* tag. If you would like to count requests sent to x.y.z.w you would just check that item == ntatag_s_sent_request and that msg_addr(message) would contain IP address x,y.z.w and then increment your counter... > 3) If that's not up in your priorities list, is it something someone who's > not so familiar with the code (say, me) would be able to do? Why not... Add a new tag accepting a pointer. Say, copy code dealing with ntatag_mclass in nta_tag.h and nta_tag.c, and add a prototype for the callback in <sofia-sip/nta_tag.h> like typedef void nta_stat_callback_f( nta_agent_magic_t *context, tag_type_t item, msg_t *message, sip_t *sip_headers); Then add a field for pointer (say, sa_stat_cb) in struct nta_agent_s in <nta_internal.h>: nta_stat_callback_f *sa_stat_cb; Next you copy mclass handling in agent_set_params() and agent_get_params() in <nta.c>. Finally you should track all the code incrementing counters in sa_stats within the nta.c and calls to sa_stat_cb (preferably checking that sa_stat_cb is non-null first). -- Pekka.Pessi mail at nokia.com ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
