Re: [Serusers] Rewriting URI in the Contact field

First, you need to include t_hooks.h and tm_load.h from the tm module. Then, you need to register a callback function. The following code snippet shows how to do it: static int mod_init( void ) { load_tm_f load_tm; /* import the TM auto-loading function */ if ( !(load_tm=(load_tm_f)find_export("load_tm", NO_SCRIPT))) { LOG(L_ERR, "radius_acc: mod_init: can't import load_tm\n"); return -1; } /* let the auto-loading function load all TM stuff */ if (load_tm( &tmb )==-1) return -1; /* register callback */ if (tmb.rngister_tmcb( TMCB_REPLY, rad_acc_onreply, 0) <= 0) return -1; } return 0; } The mod_init function registers rad_acc_onreply function, the function will be called when the tm module receives a response. The callback follows. Note that radius_acc module (from which the code snippets were taken) registers TMCB_REPLY callback. This type of callback will be called _AFTER_ the response was sent out - that means there is no way how to modify it. Because of that, your module will have to register another type of callback - TMCB_REPLY_IN. Such callback will be called before the reply gets forwarded which means that you can modify it before it will be sent out. See modules/tm/t_hooks.h file for more details ! There is a description of the callbacks. /* * Function that gets called on reply * params: struct cell* t The callback structure * struct sip_msg *msg The sip message. * int code The status code * void* param Passed parameter * returns: nothing */ static void rad_acc_onreply( struct cell* t, struct sip_msg *reply, int code, void *param ) { struct sip_msg *rq; rq = t->uas.request; if (t->is_invite && missed_flag && isflagset( rq, missed_flag)==1 && ((code>=400 && code<500) || code>=600)) rad_acc_missed_report( t, reply, code); /* if acc enabled for flagged transaction, check if flag matches */ if (acc_flag && isflagset( rq, acc_flag )==-1) return; /* early media is reported only if explicitely demanded, other provisional responses are always dropped */ if (code < 200 && ! (early_media && code==183)) return; /* negative transactions reported only if explicitely demanded */ if (!failed_transactions && code >=300) return; /* anything else, i.e., 2xx, always reported */ radius_log_reply(t, reply); } regards, Jan.