* it also has a regular-looking handshake.
     *
     * **This feature is not supported on Android API levels less than 24.** Prior releases lacked
     * a mechanism to trust some hosts and not others.
     *
     * @param hostname the exact hostname from the URL for insecure connections.
     */
    fun addInsecureHost(hostname: String) =
      apply {
        insecureHosts += hostname

import java.math.BigInteger;
import org.jspecify.annotations.Nullable;

/**
 * A wrapper class for unsigned {@code int} values, supporting arithmetic operations.
 *
 * <p>In some cases, when speed is more important than code readability, it may be faster simply to
 * treat primitive {@code int} values as unsigned, using the methods from {@link UnsignedInts}.
 *
 * <p>See the Guava User Guide article on <a

    private boolean isRecoverableError(Exception error) {
        // Timeout errors are often recoverable
        if (error instanceof SocketTimeoutException) {
            return true;
        }

        // Some socket errors might be recoverable
        if (error instanceof SocketException) {
            String message = error.getMessage();
            if (message != null) {
                message = message.toLowerCase();

    @Test
    public void testIsValidWithUnicode() {
        SmbNegotiationRequest request = mock(SmbNegotiationRequest.class);
        response.getServerData().scapabilities = SmbConstants.CAP_UNICODE;
        // Set some required server data for valid response
        response.getServerData().smaxMpxCount = 1;
        response.getServerData().maxBufferSize = 16384;

        assertTrue(response.isValid(mockContext, request));

    this.cancelMode = mode.first
    this.connectionType = mode.second

    if (connectionType == H2) {
      platform.assumeHttp2Support()
    }

    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    server = MockWebServer()
    server.serverSocketFactory =

                // Force close the handle
                this.open = false;
                this.usageCount.set(0);

                // Clear mutable references to free memory
                // Note: Some fields may be final and cannot be nulled

                // Clear any other mutable state would go here
            }
        } catch (Exception e) {

{* ../../docs_src/dependencies/tutorial001.py hl[8:11] *}

👈 ⚫️.

**2️⃣ ⏸**.

& ⚫️ ✔️ 🎏 💠 & 📊 👈 🌐 👆 *➡ 🛠️ 🔢* ✔️.

👆 💪 💭 ⚫️ *➡ 🛠️ 🔢* 🍵 "👨‍🎨" (🍵 `@app.get("/some-path")`).

& ⚫️ 💪 📨 🕳 👆 💚.

👉 💼, 👉 🔗 ⌛:

* 📦 🔢 🔢 `q` 👈 `str`.
* 📦 🔢 🔢 `skip` 👈 `int`, & 🔢 `0`.
* 📦 🔢 🔢 `limit` 👈 `int`, & 🔢 `100`.

& ⤴️ ⚫️ 📨 `dict` ⚗ 📚 💲.

   * @throws NullPointerException if {@code string} is null
   */
  protected final String escapeSlow(String s, int index) {
    int slen = s.length();

    // Get a destination buffer and setup some loop variables.
    char[] dest = Platform.charBufferFromThreadLocal();
    int destSize = dest.length;
    int destIndex = 0;
    int lastEscape = 0;

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` 함수는 다음과 같은 인자를 받습니다 :

- 백그라운드에서 실행되는 작업 함수 (`write_notification`).
- 작업 함수에 순서대로 전달되어야 하는 일련의 인자 (`email`).
- 작업 함수에 전달되어야하는 모든 키워드 인자 (`message="some notification"`).

## 의존성 주입

`BackgroundTasks`를 의존성 주입 시스템과 함께 사용하면 _경로 작동 함수_, 종속성, 하위 종속성 등 여러 수준에서 BackgroundTasks 유형의 매개변수를 선언할 수 있습니다.

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

## Shortcut { #shortcut }

But you see that we are having some code repetition here, writing `CommonQueryParams` twice:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

////