const char *addinfo;
if ((errcode = ZOOM_connection_error(c, &errmsg, &addinfo)) != 0) {
//###cerr << "oops: no connect, errcode=" << errcode << "\n";
const char *addinfo;
if ((errcode = ZOOM_connection_error(c, &errmsg, &addinfo)) != 0) {
//###cerr << "oops: no connect, errcode=" << errcode << "\n";