openUnidirectionalStream method

int openUnidirectionalStream()

Allocates a new client-initiated unidirectional stream ID and creates the send-side stream in the streamManager.

Unidirectional streams allow only the initiator to send data; the peer can only receive. If 0-RTT keys are currently available, the new stream is marked as early data.

Throws StateError if the connection is closed or the stream limit has been reached.

Implementation

int openUnidirectionalStream() {
  final streamId = _streamIdAllocator.allocateClientUni();
  _streamManager.createSendStream(
    streamId,
    isEarlyData: canSendZeroRtt,
  );
  return streamId;
}