nathelper: received uri is using core function for generating source uri

- transport value is now lower case

modules/nathelper/nathelper.c

@@ -2223,94 +2223,7 @@ done:
 static int
 create_rcv_uri(str* uri, struct sip_msg* m)
 {
-	static char buf[MAX_URI_SIZE];
-	char* p;
-	str ip, port;
-	int len;
-	str proto;
-
-	if (!uri || !m) {
-		LM_ERR("invalid parameter value\n");
-		return -1;
-	}
-
-	ip.s = ip_addr2a(&m->rcv.src_ip);
-	ip.len = strlen(ip.s);
-
-	port.s = int2str(m->rcv.src_port, &port.len);
-
-	switch(m->rcv.proto) {
-	case PROTO_NONE:
-	case PROTO_UDP:
-		proto.s = 0; /* Do not add transport parameter, UDP is default */
-		proto.len = 0;
-		break;
-
-	case PROTO_TCP:
-		proto.s = "TCP";
-		proto.len = 3;
-		break;
-
-	case PROTO_TLS:
-		proto.s = "TLS";
-		proto.len = 3;
-		break;
-
-	case PROTO_SCTP:
-		proto.s = "SCTP";
-		proto.len = 4;
-		break;
-
-	case PROTO_WS:
-	case PROTO_WSS:
-		proto.s = "WS";
-		proto.len = 2;
-		break;
-
-	default:
-		LM_ERR("unknown transport protocol\n");
-		return -1;
-	}
-
-	len = 4 + ip.len + 2*(m->rcv.src_ip.af==AF_INET6)+ 1 + port.len;
-	if (proto.s) {
-		len += TRANSPORT_PARAM_LEN;
-		len += proto.len;
-	}
-
-	if (len > MAX_URI_SIZE) {
-		LM_ERR("buffer too small\n");
-		return -1;
-	}
-
-	p = buf;
-	memcpy(p, "sip:", 4);
-	p += 4;
-	
-	if (m->rcv.src_ip.af==AF_INET6)
-		*p++ = '[';
-	memcpy(p, ip.s, ip.len);
-	p += ip.len;
-	if (m->rcv.src_ip.af==AF_INET6)
-		*p++ = ']';
-
-	*p++ = ':';
-	
-	memcpy(p, port.s, port.len);
-	p += port.len;
-
-	if (proto.s) {
-		memcpy(p, TRANSPORT_PARAM, TRANSPORT_PARAM_LEN);
-		p += TRANSPORT_PARAM_LEN;
-
-		memcpy(p, proto.s, proto.len);
-		p += proto.len;
-	}
-
-	uri->s = buf;
-	uri->len = len;
-
-	return 0;
+	return get_src_uri(m, 0, uri);
 }