// Receive incoming data. Check if it contains a complete record, if so, handle it.
bool sptps_receive_data(sptps_t *s, const char *data, size_t len) {
+ if(!s->state)
+ return error(s, EIO, "Invalid session state");
+
if(s->datagram)
return sptps_receive_data_datagram(s, data, len);