In this case the middleware will intercept the incoming request and respond with appropriate CORS headers, and either a `200` or `400` response for informational purposes.

### Simple requests

Any request with an `Origin` header. In this case the middleware will pass the request through as normal, but will include appropriate CORS headers on the response.

## More info

After filing a report, a representative from the Square Code of Conduct committee will contact you
personally. The committee will then review the incident, follow up with any additional questions,
and make a decision as to how to respond.

Anyone asked to stop unacceptable behavior is expected to comply immediately. If an individual
engages in unacceptable behavior, the Square Code of Conduct committee may take any action they deem

     * that once the Thread returns to the Executor that this Executor composes, the interruption
     * will still be present. If the composed Executor is an ExecutorService, it can respond to
     * shutdown() by returning tasks queued on that Thread after {@link #worker} drains the queue.
     */
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    private void workOnQueue() {

     * that once the Thread returns to the Executor that this Executor composes, the interruption
     * will still be present. If the composed Executor is an ExecutorService, it can respond to
     * shutdown() by returning tasks queued on that Thread after {@link #worker} drains the queue.
     */
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    private void workOnQueue() {

<img src="/img/tutorial/websockets/image01.png">

You can type messages in the input box, and send them:

<img src="/img/tutorial/websockets/image02.png">

And your **FastAPI** application with WebSockets will respond back:

<img src="/img/tutorial/websockets/image03.png">

You can send (and receive) many messages:

<img src="/img/tutorial/websockets/image04.png">

And all of them will use the same WebSocket connection.

  }

  @Throws(IOException::class)
  internal fun checkUpgradeSuccess(
    response: Response,
    exchange: Exchange?,
  ) {
    if (response.code != 101) {
      throw ProtocolException(
        "Expected HTTP 101 response but was '${response.code} ${response.message}'",
      )
    }

    val headerConnection = response.header("Connection")
    if (!"Upgrade".equals(headerConnection, ignoreCase = true)) {

If it doesn't see an `Authorization` header, or the value doesn't have a `Bearer ` token, it will respond with a 401 status code error (`UNAUTHORIZED`) directly.

You don't even have to check if the token exists to return an error. You can be sure that if your function is executed, it will have a `str` in that token.

	// and positive values indicating number of read locks
	lockMap map[string]int64

	// Refresh returns lock not found if set to true
	lockNotFound bool

	// Set to true if you want peers servers to do not respond
	responseDelay int64
}

func (l *lockServer) setRefreshReply(refreshed bool) {
	l.mutex.Lock()
	defer l.mutex.Unlock()
	l.lockNotFound = !refreshed
}

                response = (NameServicePacket)responseTable.get( new Integer( nameTrnId ));
                if( response == null || response.received ) {
                    continue;
                }
                synchronized( response ) {
                    response.readWireFormat( rcv_buf, 0 );
                    response.received = true;

                    if( log.level > 3 ) {

  abstract class Listener {
    /**
     * Handle a new stream from this connection's peer. Implementations should respond by either
     * [replying to the stream][Http2Stream.writeHeaders] or [closing it][Http2Stream.close]. This
     * response does not need to be synchronous.
     *
     * Multiple calls to this method may be made concurrently.
     */
    @Throws(IOException::class)