SUBSCRIBE
if (error != 0 || _dialog->sip_dlg_method != SUBSCRIBE ||
if (!isreq && _dialog->sip_dlg_method == SUBSCRIBE &&
if (error != 0 || (method != INVITE && method != SUBSCRIBE))
if (method == SUBSCRIBE)
(method == SUBSCRIBE && evhdr == NULL)) {
if (method == SUBSCRIBE) {
case SUBSCRIBE: