onTransportError method
Implementation
@override
void onTransportError() {
clearTimeout(B);
clearTimeout(D);
clearTimeout(M);
if (state != TransactionState.ACCEPTED) {
logger.debug('transport error occurred, deleting transaction $id');
_eventHandlers.emit(EventOnTransportError());
}
stateChanged(TransactionState.TERMINATED);
ua!.destroyTransaction(this);
}