Method do_io_close

src/proxy/http2/Http2Stream.cc:554–587

Initiated from SM

// Initiated from SM
void
Http2Stream::do_io_close(int /* flags */)
{
  SCOPED_MUTEX_LOCK(lock, this->mutex, this_ethread());

  if (!closed) {
    REMEMBER(NO_EVENT, this->reentrancy_count);
    Http2StreamDebug("do_io_close");

    // Let the other end know we are going away.
    // We only need to do this for the client side since we only need to pass through RST_STREAM
    // from the server. If a client sends a RST_STREAM, we need to keep the server side alive so
    // the background fill can function as intended.
    //
    // In the half-closed(local) state, server can close stream actively by sending RST_STREAM frame
    if (!this->is_outbound_connection() &&
        (this->is_state_writeable() || _state == Http2StreamState::HTTP2_STREAM_STATE_HALF_CLOSED_LOCAL)) {
      this->get_connection_state().send_rst_stream_frame(_id, Http2ErrorCode::HTTP2_ERROR_NO_ERROR);
    }

    // When we get here, the SM has initiated the shutdown.  Either it received a WRITE_COMPLETE, or it is shutting down.  Any
    // remaining IO operations back to client should be abandoned.  The SM-side buffers backing these operations will be deleted
    // by the time this is called from transaction_done.
    closed = true;

    // Adjust state, so we don't process any more data
    _state = Http2StreamState::HTTP2_STREAM_STATE_CLOSED;

    _clear_timers();
    clear_io_events();

    // Otherwise, Wait until transaction_done is called from HttpSM to signal that the TXN_CLOSE hook has been executed
  }
}

/*
 *  HttpSM has called TXN_close hooks.