client.newCall(request).execute().use {
      assertEquals(204, it.code)
    }

    request =
      Request
        .Builder()
        .url(endpointUrl)
        .header("Content-Type", "application/xml")
        .put(ErringRequestBody())
        .build()
    assertFailsWith<IOException> {
      client.newCall(request).execute()
    }

    request =
      Request
        .Builder()

            executor.shutdown();

            // Some requests should be rejected due to backpressure
            assertTrue(rejectedCount.get() > 0, "Some requests should be rejected by backpressure");
            assertTrue(successCount.get() > 0, "Some requests should succeed");
            assertEquals(5, rejectedCount.get() + successCount.get(), "Total should be 5");

        void testPartialCopyOperation() throws SMBProtocolDecodingException {
            // Simulate partial copy where not all requested bytes were copied
            byte[] buffer = createValidCopyChunkResponse(3, // Only 3 chunks written (maybe less than requested)
                    65536, // 64KB per chunk
                    196608 // 192KB total (3 * 64KB)
            );

	scanDir = func(current string) error {
		if contextCanceled(ctx) {
			return ctx.Err()
		}
		if opts.Limit > 0 && objsReturned >= opts.Limit {
			return nil
		}

		// Skip forward, if requested...
		sb := bytebufferpool.Get()
		defer func() {
			sb.Reset()
			bytebufferpool.Put(sb)
		}()

		forward := ""
		if len(opts.ForwardTo) > 0 && strings.HasPrefix(opts.ForwardTo, current) {

      </Credentials>
   </AssumeRoleWithCertificateResult>
   <ResponseMetadata>
      <RequestId>169339CD8B3A6948</RequestId>
   </ResponseMetadata>
</AssumeRoleWithCertificateResponse>
```

## Authentication Flow

///

### <a href="https://requests.readthedocs.io" class="external-link" target="_blank">Requests</a> { #requests }

**FastAPI** на самом деле не альтернатива **Requests**. Их области применения очень различны.

Обычно Requests используют даже внутри приложения FastAPI.

И всё же **FastAPI** во многом вдохновлялся Requests.

The response answers the request with a code (like 200 for success or 404 for not found), headers, and its own optional body.

## Rewriting Requests

When you provide OkHttp with an HTTP request, you’re describing the request at a high-level: _“fetch me this URL with these headers.”_ For correctness and efficiency, OkHttp rewrites your request before transmitting it.

/// tip | Tipp

Der eigentliche Callback ist nur ein HTTP-Request.

Wenn Sie den Callback selbst implementieren, können Sie beispielsweise <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a> oder <a href="https://requests.readthedocs.io/" class="external-link" target="_blank">Requests</a> verwenden.

///

- `aws:username` - This is a string containing the friendly name of the current user, this value would point to STS temporary credential in `AssumeRole`ed requests, use `jwt:preferred_username` in case of OpenID connect and `ldap:username`...

	expectedRequestURI := "/?" + expectedQuery.Encode()
	if !reflect.DeepEqual(res.RequestURI, expectedRequestURI) {
		t.Fatalf("Expected %#v, got %#v", expectedRequestURI, res.RequestURI)
	}

	// Look for expected header.
	expectedHeader := http.Header{}
	expectedHeader.Set("content-md5", "====test")
	expectedHeader.Set("host", "localhost:9000")