* **WebSocket** support.
* In-process background tasks.
* Startup and shutdown events.
* Test client built on HTTPX.
* **CORS**, GZip, Static Files, Streaming responses.
* **Session and Cookie** support.
* 100% test coverage.
* 100% type annotated codebase.

## Pydantic features { #pydantic-features }

    above. See [Jetty's overview][jetty_8_252] of the API change and its consequences.

 *  New: `MultipartReader` is a streaming decoder for [MIME multipart (RFC 2045)][rfc_2045]
    messages. It complements `MultipartBody` which is our streaming encoder.

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

func TestXLStorageVerifyFile(t *testing.T) {
	// We test 4 cases:
	// 1) Whole-file bitrot check on proper file
	// 2) Whole-file bitrot check on corrupted file
	// 3) Streaming bitrot check on proper file
	// 4) Streaming bitrot check on corrupted file

	// create xlStorage test setup
	storage, path, err := newXLStorageTestSetup(t)
	if err != nil {

import java.math.BigInteger
import java.net.ProtocolException
import okio.Buffer
import okio.BufferedSource
import okio.ByteString
import okio.ForwardingSource
import okio.Source
import okio.buffer

/**
 * Streaming decoder of data encoded following Abstract Syntax Notation One (ASN.1). There are
 * multiple variants of ASN.1, including:
 *
 *  * DER: Distinguished Encoding Rules. This further constrains ASN.1 for deterministic encoding.

If the response contains shared data it will cause issues, since each unique response is reused.
To disable this behavior, use `(SingleHandler).WithSharedResponse()` to disable it.

## Streaming Requests

Streams consists of an initial request with payload and allows for full two-way communication between the client and server.

The handler function has this signature.

Sample handler:
```go

/// tip

Instead of returning a `StreamingResponse` directly, you should probably follow the style in [Stream Data](./stream-data.md), it's much more convenient and handles cancellation behind the scenes for you.

If you are streaming JSON Lines, follow the [Stream JSON Lines](../tutorial/stream-json-lines.md) tutorial.

///

### `FileResponse` { #fileresponse }

Asynchronously streams a file as the response.

For example, if you had a database session in a dependency with `yield`, the `StreamingResponse` would not be able to use that session while streaming data because the session would have already been closed in the exit code after `yield`.

This behavior was reverted in 0.118.0, to make the exit code after `yield` be executed after the response is sent.

/// info

   * }
   */
  Hasher newHasher();

  /**
   * Begins a new hash code computation as {@link #newHasher()}, but provides a hint of the expected
   * size of the input (in bytes). This is only important for non-streaming hash functions (hash
   * functions that need to buffer their whole input before processing any of it).
   */
  Hasher newHasher(int expectedInputSize);

  /**

		return ErrHandlerAlreadyExists
	}

	m.handlers.stateless[id] = &h
	return nil
}
*/

// RegisterStreamingHandler will register a stateless handler that serves
// two-way streaming requests.
func (m *Manager) RegisterStreamingHandler(id HandlerID, h StreamHandler) error {
	if !id.valid() {
		return ErrUnknownHandler
	}
	if debugPrint {

   *   -X PUT \
   *   -H 'Authorization: Bearer token' \
   *   --data '{\"key\":\"value\"}'
   * ```
   *
   * **Note:** This will consume the request body. This may have side effects if the [RequestBody]
   * is streaming or can be consumed only once.
   */
  @JvmOverloads
  fun toCurl(includeBody: Boolean = true): String =
    buildString {
      append("curl ${url.toString().shellEscape()}")