rr: new param sockname_mode

- if set to 1, socket name is added to Path URI in 'sn' param

src/modules/rr/record.c

@@ -70,6 +70,7 @@
 #define RR_PARAM_BUF_SIZE 512 /*!< buffer for RR parameter */
 
 extern int rr_ignore_sips;
+extern int rr_sockname_mode;
 
 /*!
  * \brief RR param buffer
@@ -207,6 +208,7 @@ static inline int build_rr(struct lump* _l, struct lump* _l2, str* user,
 	char *p;
 	char *rr_prefix;
 	int rr_prefix_len;
+	int rr_lump_type;
 
 	if(_sips==0) {
 		rr_prefix = RR_PREFIX_SIP;
@@ -281,7 +283,10 @@ static inline int build_rr(struct lump* _l, struct lump* _l2, str* user,
 	if (!(_l = insert_new_lump_after(_l, prefix, prefix_len, 0)))
 		goto lump_err;
 	prefix = 0;
-	_l = insert_subst_lump_after(_l, _inbound?SUBST_RCV_ALL:SUBST_SND_ALL, 0);
+	rr_lump_type = (_inbound)?
+					(rr_sockname_mode?SUBST_RCV_ALL_EX:SUBST_RCV_ALL)
+					:(rr_sockname_mode?SUBST_SND_ALL_EX:SUBST_SND_ALL);
+	_l = insert_subst_lump_after(_l, rr_lump_type, 0);
 	if (_l ==0 )
 		goto lump_err;
 	if (enable_double_rr) {

src/modules/rr/rr_mod.c

@@ -62,6 +62,7 @@ int enable_socket_mismatch_warning = 1; /*!< enable socket mismatch warning */
 static str custom_user_spec = {NULL, 0};
 pv_spec_t custom_user_avp;
 int rr_ignore_sips = 0; /*!< ignore sips schema when building record-route */
+int rr_sockname_mode = 0; /*!< add socket name to R-R header */
 
 ob_api_t rr_obb;
 
@@ -136,6 +137,7 @@ static param_export_t params[] ={
 	{"custom_user_avp",     PARAM_STR, &custom_user_spec},
 	{"force_send_socket",   PARAM_INT, &rr_force_send_socket},
 	{"ignore_sips",         PARAM_INT, &rr_ignore_sips},
+	{"sockname_mode",       PARAM_INT, &rr_sockname_mode},
 	{0, 0, 0 }
 };