*  Fix: Reject HTTP/2 data frames if the stream ID is 0.
 *  New: Upgrade to Okio 1.12.0.

     ```xml
     <dependency>
       <groupId>com.squareup.okio</groupId>
       <artifactId>okio</artifactId>
       <version>1.12.0</version>
     </dependency>

     com.squareup.okio:okio:1.12.0
     ```

 *  New: Connection coalescing. OkHttp may reuse HTTP/2 connections across calls that share an IP

### Usando o objeto `settings`

Depois, Você pode utilizar o novo objeto `settings` na sua aplicação:

```Python hl_lines="18-20"
{!../../docs_src/settings/tutorial001.py!}
```

### Executando o servidor

    void testOverConstrainedVersionException()
            throws ArtifactResolutionException, InvalidVersionSpecificationException {
        ArtifactSpec a = createArtifactSpec("a", "1.0");
        a.addDependency("b", "[1.0, 2.0)");
        a.addDependency("c", "[3.3.0,4.0.0)");

        ArtifactSpec b = createArtifactSpec("b", "1.0.0");
        b.addDependency("c", "3.3.0-v3346");

      .isEqualTo(0L)
    assertThat(parse(url, "a=b; Expires=Thu, 01 Jan 1970 00:00:0 GMT")!!.expiresAt)
      .isEqualTo(0L)
    assertThat(parse(url, "a=b; Expires=00:00:00 Thu, 01 Jan 1970 GMT")!!.expiresAt)
      .isEqualTo(0L)
    assertThat(parse(url, "a=b; Expires=00:00:00 1970 Jan 01")!!.expiresAt)
      .isEqualTo(0L)
    assertThat(parse(url, "a=b; Expires=00:00:00 1970 Jan 1")!!.expiresAt)

		// than the same number of values for different keys (many map entries), but
		// using a consistent per-value cost for overhead is simpler.
		maxMemoryBytes := 2 * int64(10<<20)
		maxMemoryBytes -= int64(len(name))
		maxMemoryBytes -= mapEntryOverhead
		if maxMemoryBytes < 0 {
			// We can't actually take this path, since nextPart would already have

        }

        pos = dateCharacterOffset(s, end + 1, limit, false)
      }

      // Convert two-digit years into four-digit years. 99 becomes 1999, 15 becomes 2015.
      if (year in 70..99) year += 1900
      if (year in 0..69) year += 2000

      // If any partial is omitted or out of range, return -1. The date is impossible. Note that leap
      // seconds are not supported by this syntax.
      require(year >= 1601)

然后，它将转换和验证数据。因此，当您使用该 `settings` 对象时，您将获得您声明的类型的数据（例如 `items_per_user` 将为 `int` 类型）。

### 使用 `settings`

然后，您可以在应用程序中使用新的 `settings` 对象：

```Python hl_lines="18-20"
{!../../docs_src/settings/tutorial001.py!}
```

### 运行服务器

接下来，您将运行服务器，并将配置作为环境变量传递。例如，您可以设置一个 `ADMIN_EMAIL` 和 `APP_NAME`，如下所示：

<div class="termy">

```console

				var bb Buffer
				for bb.Len() < n {
					bb.Write(block)
				}
			}
		})
	}
}

func BenchmarkBufferAppendNoCopy(b *testing.B) {
	var bb Buffer
	bb.Grow(16 << 20)
	b.SetBytes(int64(bb.Available()))
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		bb.Reset()
		b := bb.AvailableBuffer()
		b = b[:cap(b)] // use max capacity to simulate a large append operation

		}
	}
	return
}

// generatesZip64 reports whether f wrote a zip64 file.
// f is also responsible for closing w.
func generatesZip64(t *testing.T, f func(w *Writer)) bool {
	ss := &suffixSaver{keep: 10 << 20}
	w := NewWriter(ss)
	f(w)
	return suffixIsZip64(t, ss)
}

type sizedReaderAt interface {
	io.ReaderAt
	Size() int64
}

func suffixIsZip64(t *testing.T, zip sizedReaderAt) bool {

192C..192F    ; disallowed                             # NA   <reserved-192C>..<reserved-192F>
1930..193B    ; valid                                  # 4.0  LIMBU SMALL LETTER KA..LIMBU SIGN SA-I
193C..193F    ; disallowed                             # NA   <reserved-193C>..<reserved-193F>
1940          ; valid                  ;      ; NV8    # 4.0  LIMBU SIGN LOO
1941..1943    ; disallowed                             # NA   <reserved-1941>..<reserved-1943>