core: added local_rport global parameter

- similar to add_local_rport() but set globally

src/core/cfg.lex

@@ -154,6 +154,7 @@ ROUTE_SEND onsend_route
 ROUTE_EVENT event_route
 EXEC	exec
 FORCE_RPORT		"force_rport"|"add_rport"
+LOCAL_RPORT		"local_rport"
 ADD_LOCAL_RPORT		"add_local_rport"
 FORCE_TCP_ALIAS		"force_tcp_alias"|"add_tcp_alias"
 UDP_MTU		"udp_mtu"
@@ -638,6 +639,8 @@ IMPORTFILE      "import_file"
 <INITIAL>{SET_USERPHONE}	{ count(); yylval.strval=yytext;
 								return SET_USERPHONE; }
 <INITIAL>{FORCE_RPORT}	{ count(); yylval.strval=yytext; return FORCE_RPORT; }
+<INITIAL>{LOCAL_RPORT}	{ count(); yylval.strval=yytext;
+								return LOCAL_RPORT; }
 <INITIAL>{ADD_LOCAL_RPORT}	{ count(); yylval.strval=yytext;
 								return ADD_LOCAL_RPORT; }
 <INITIAL>{FORCE_TCP_ALIAS}	{ count(); yylval.strval=yytext;

src/core/cfg.y

@@ -253,6 +253,7 @@ extern char *default_routename;
 %token REVERT_URI
 %token FORCE_RPORT
 %token ADD_LOCAL_RPORT
+%token LOCAL_RPORT
 %token FORCE_TCP_ALIAS
 %token UDP_MTU
 %token UDP_MTU_TRY_PROTO
@@ -1757,6 +1758,8 @@ assign_stm:
 	| FORCE_RPORT EQUAL NUMBER
 		{ default_core_cfg.force_rport=$3; fix_global_req_flags(0, 0); }
 	| FORCE_RPORT EQUAL error { yyerror("boolean value expected"); }
+	| LOCAL_RPORT EQUAL NUMBER { ksr_local_rport=$3; }
+	| LOCAL_RPORT EQUAL error { yyerror("boolean value expected"); }
 	| UDP_MTU_TRY_PROTO EQUAL proto
 		{ default_core_cfg.udp_mtu_try_proto=$3; fix_global_req_flags(0, 0); }
 	| UDP_MTU_TRY_PROTO EQUAL error

src/core/globals.h

@@ -222,6 +222,7 @@ extern unsigned char *_ksr_hname_extra_chars;
 
 extern char *ksr_stats_namesep;
 extern str ksr_ipv6_hex_style;
+extern int ksr_local_rport;
 
 #ifdef USE_DNS_CACHE
 extern int dns_cache_init; /* if 0, the DNS cache is not initialized at startup */

src/core/msg_translator.c

@@ -114,6 +114,7 @@ extern int version_len;
 
 str _ksr_xavp_via_params = STR_NULL;
 str _ksr_xavp_via_fields = STR_NULL;
+int ksr_local_rport = 0;
 
 /** per process fixup function for global_req_flags.
   * It should be called from the configuration framework.
@@ -2975,7 +2976,7 @@ char* create_via_hf(unsigned int *len,
 #endif /* USE_TCP || USE_SCTP */
 
 	/* test and add rport parameter to local via - rfc3581 */
-	if(msg && msg->msg_flags&FL_ADD_LOCAL_RPORT) {
+	if((ksr_local_rport) || (msg && (msg->msg_flags&FL_ADD_LOCAL_RPORT))) {
 		/* params so far + ';rport' + '\0' */
 		via = (char*)pkg_malloc(extra_params.len+RPORT_LEN);
 		if(via==0) {