kemix: exported KSR.kx.get_send_sock_port()

- return send socket port if set, 0 otherwise

src/modules/kemix/kemix_mod.c

@@ -522,6 +522,17 @@ static sr_kemi_xval_t* ki_kx_get_send_sock_name(sip_msg_t *msg)
 	return &_sr_kemi_kx_xval;
 }
 
+/**
+ *
+ */
+static int ki_kx_get_send_sock_port(sip_msg_t *msg)
+{
+	if (msg==NULL || msg->force_send_socket==0) {
+		return 0;
+	}
+	return (int)msg->force_send_socket->port_no;
+}
+
 /**
  *
  */
@@ -1325,6 +1336,11 @@ static sr_kemi_t sr_kemi_kx_exports[] = {
 		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,
 			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
 	},
+	{ str_init("kx"), str_init("get_send_sock_port"),
+		SR_KEMIP_INT, ki_kx_get_send_sock_port,
+		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,
+			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
+	},
 	{ str_init("kx"), str_init("get_rcvip"),
 		SR_KEMIP_XVAL, ki_kx_get_rcvip,
 		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,