/**
     * Reserve an opportunistic lock filter on the open
     */
    public static final int FILE_RESERVE_OPFILTER = 0x100000;
    /**
     * Open a reparse point and bypass normal reparse point processing
     */
    public static final int FILE_OPEN_REPARSE_POINT = 0x200000;
    /**
     * Open does not cause an opportunistic lock break for the file
     */

{* ../../docs_src/dependencies/tutorial007.py hl[5:6] *}

/// tip

You can use `async` or regular functions.

**FastAPI** will do the right thing with each, the same as with normal dependencies.

///

## A dependency with `yield` and `try` { #a-dependency-with-yield-and-try }

{* ../../docs_src/settings/app02_an_py39/main.py hl[6,12:13] *}

/// tip

We'll discuss the `@lru_cache` in a bit.

For now you can assume `get_settings()` is a normal function.

///

And then we can require it from the *path operation function* as a dependency and use it anywhere we need it.

{* ../../docs_src/settings/app02_an_py39/main.py hl[17,19:21] *}

  fun nextFrame(
    requireSettings: Boolean,
    handler: Handler,
  ): Boolean {
    try {
      source.require(9) // Frame header size.
    } catch (e: EOFException) {
      return false // This might be a normal socket close.
    }

    //  0                   1                   2                   3
    //  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

            path = "../";
        }
        out.println(dirCount + fileCount + " objects (" + dirCount + " directories, " + fileCount + " files)<br>");
        out.println("<b><a class=\"plain\" href=\".\">normal</a> | <a class=\"plain\" href=\"?fmt=detail\">detailed</a></b>");
        out.println("<p><table border='0' cellspacing='0' cellpadding='0'><tr><td>");

        out.print("<A style=\"width: " + maxLen);

}

@Override
protected void doConnect() throws IOException {
    // Request directory lease for directories
    if (isDirectory()) {
        requestDirectoryLease();
    }
    
    // Continue with normal connection logic
    super.doConnect();
}

@Override
public void close() throws IOException {
    try {
        super.close();
    } finally {

    * The router dependencies are executed first, then the [`dependencies` in the decorator](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, and then the normal parameter dependencies.
    * You can also add [`Security` dependencies with `scopes`](../advanced/security/oauth2-scopes.md){.internal-link target=_blank}.

/// tip

 * <li>{@literal file}</li>
 * <li>{@literal jar}</li>
 * <li>{@literal wsjar} (WebSphere proprietary protocol, alias for {@literal jar})</li>
 * <li>{@literal zip} (WebLogic proprietary protocol, use {@literal jar} protocol for normal zip files)</li>
 * <li>{@literal code-source} (Oracle AS(OC4J) proprietary protocol)</li>
 * <li>{@literal vfsfile} (JBossAS5 proprietary protocol, alias for {@literal file})</li>

        }
    }

    /**
     * Destroys the DI container and stops the timeout manager.
     * This method ensures proper cleanup of resources when the crawler shuts down.
     * It's called both during normal shutdown and in error conditions.
     */
    private static void destroyContainer() {
        if (running.getAndSet(false)) {
            TimeoutManager.getInstance().stop();
            if (logger.isDebugEnabled()) {

                    setHttpHeaders.invoke(wagon, headers);
                } catch (NoSuchMethodException e) {
                    // normal for non-http wagons
                } catch (Exception e) {
                    logger.debug("Could not set user agent for wagon "
                            + wagon.getClass().getName() + ": " + e);
                }