👉 🍕 📶 😐, 🌅 📟 🎲 ⏪ 😰 👆:

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[9:13,36:53] *}

/// tip

`callback_url` 🔢 🔢 ⚙️ Pydantic <a href="https://docs.pydantic.dev/latest/concepts/types/#urls" class="external-link" target="_blank">📛</a> 🆎.

///

🕴 🆕 👜 `callbacks=messages_callback_router.routes` ❌ *➡ 🛠️ 👨‍🎨*. 👥 🔜 👀 ⚫️❔ 👈 ⏭.

## 🔬 ⏲

☑ ⏲ 📟 🔜 🪀 🙇 🔛 👆 👍 🛠️ 📱.

    }

    /**
     * Checks if the given URL uses a valid web protocol.
     *
     * @param url the URL to validate
     * @return true if the URL starts with a supported web protocol, false otherwise
     */
    public boolean isValidWebProtocol(final String url) {
        return stream(webProtocols).get(stream -> stream.anyMatch(s -> url.startsWith(s)));
    }

    /**

 *  New: Add the TLS version to the `Handshake`.
 *  New: Drop `Request.uri()` and `Request#urlString()`. Just use
    `Request.url().uri()` and `Request.url().toString()`.
 *  New: Add URL to HTTP response logging.
 *  New: Make `HttpUrl` the blessed URL method of `Request`.


## Version 2.x

[Change log](changelog_2x.md)


 [bom]: https://en.wikipedia.org/wiki/Byte_order_mark

  }

  @Test
  fun cache() {
    val cache = Cache(File("/cache/"), Integer.MAX_VALUE.toLong())
    cache.initialize()
    cache.delete()
    cache.evictAll()
    val urls: MutableIterator<String> = cache.urls()
    val writeAbortCount: Int = cache.writeAbortCount()
    val writeSuccessCount: Int = cache.writeSuccessCount()
    val size: Long = cache.size()
    val maxSize: Long = cache.maxSize()

                return null;
            }
            String url = s.replaceAll("/+", "/").replace("ftp:/", "ftp://");
            while (url.indexOf("/../") != -1) {
                url = url.replaceFirst("/[^/]+/\\.\\./", "/");
            }
            return url;
        }

        /**
         * Gets a cache key for this FTP connection based on host and port.
         * This key can be used to cache FTP client connections.

## Version 2.4.0-RC1

_2015-05-16_

 *  **New HttpUrl API.** It's like `java.net.URL` but good. Note that
    `Request.Builder.url()` now throws `IllegalArgumentException` on malformed
    URLs. (Previous releases would throw a `MalformedURLException` when calling
    a malformed URL.)

 *  **We've improved connect failure recovery.** We now differentiate between

 * `COMPATIBLE_TLS` is a secure configuration that connects to secure–but not current–HTTPS servers.
 * `CLEARTEXT` is an insecure configuration that is used for `http://` URLs.

These loosely follow the model set in [Google Cloud Policies](https://cloud.google.com/load-balancing/docs/ssl-policies-concepts). We [track changes](../security/tls_configuration_history.md) to this policy.

        /**
         * Constructs a new StorageURLConnection for the specified URL.
         * This constructor parses the URL to extract bucket and object names.
         *
         * @param url The storage URL to connect to
         */
        protected StorageURLConnection(final URL url) {
            super(url);
            final String[] values = url.toExternalForm().split("/", 2);
            if (values.length == 2) {

Server: nginx/1.4.6 (Ubuntu)
Content-Type: text/plain
Content-Length: 1759
Connection: keep-alive
```

We can see that we were redirected because `response.request().url()` is different from `request.url()`. The two log statements log two different URLs.

### Network Interceptors

Registering a network interceptor is quite similar. Call `addNetworkInterceptor()` instead of `addInterceptor()`:

```java

    CIFSContext getContext();

    /**
     * Returns the last component of the target URL. This will
     * effectively be the name of the file or directory represented by this
     * <code>SmbResource</code> or in the case of URLs that only specify a server
     * or workgroup, the server or workgroup will be returned. The name of
     * the root URL <code>smb://</code> is also <code>smb://</code>. If this