## `WebSockets`のインストール

まず `WebSockets`のインストールが必要です。

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSocket クライアント

### 本番環境

本番環境では、React、Vue.js、Angularなどの最新のフレームワークで作成されたフロントエンドを使用しているでしょう。

そして、バックエンドとWebSocketを使用して通信するために、おそらくフロントエンドのユーティリティを使用することになるでしょう。

または、ネイティブコードでWebSocketバックエンドと直接通信するネイティブモバイルアプリケーションがあるかもしれません。

        assertNotNull(resumeKey2);
        assertEquals((byte) 0x22, resumeKey2[0]);

        // Verify it's a different array
        assertNotSame(resumeKey1, resumeKey2, "Should create new array on each decode");
    }

   * #descendingMultiset()} will not reflect any changes you make to the behavior of methods such as
   * {@link #add(Object)} or {@link #pollFirstEntry}. This skeleton implementation correctly
   * delegates each of its operations to the appropriate methods of this {@code
   * ForwardingSortedMultiset}.
   *
   * <p>In many cases, you may wish to override {@link #descendingMultiset()} to return an instance

  echo 'sure they are present on your system and try again.'
  exit 1
fi

# "TFCI_MACOS_BAZEL_TEST_DIR_PATH" specifies the directory that Bazel should use
# when running tests. Each test will be executed in a separate subdirectory
# inside this directory. TF Mac builds need ~150 GB of disk space to be able to
# run all the tests. Since TFCI Mac VMs execute Bazel test commands in a

              public ImmutableList<AclEntry> value() {
                return acl;
              }
            };
        return () -> attribute;
      } catch (IOException e) {
        // We throw a new exception each time so that the stack trace is right.
        return () -> {
          throw new IOException("Could not find user", e);
        };
      }
    }

    private static String getUsername() {
      /*

            byte[] buffer2 = createValidWriteResponse(200, 100);

            response1.readBytesWireFormat(buffer1, 0);
            response2.readBytesWireFormat(buffer2, 0);

            // Each instance should maintain its own state
            assertEquals(100, response1.getCount());
            assertEquals(50, response1.getRemaining());
            assertEquals(200, response2.getCount());

        Arrays.fill(fileId2, (byte) 0xFF);

        byte[] fileId3 = new byte[16];
        for (int i = 0; i < 16; i++) {
            fileId3[i] = (byte) i;
        }

        // When & Then for each file ID
        testFileIdWriting(fileId1);
        testFileIdWriting(fileId2);
        testFileIdWriting(fileId3);
    }

    private void testFileIdWriting(byte[] fileId) {

 // Generate palettes for full colors, grays, and theme colors.\n\n  @each $color, $value in $colors {\n    --#{$prefix}#{$color}: #{$value};\n  }\n\n  @each $color, $value in $grays {\n    --#{$prefix}gray-#{$color}: #{$value};\n  }\n\n  @each $color, $value in $theme-colors {\n    --#{$prefix}#{$color}: #{$value};\n  }\n\n  @each $color, $value in $theme-colors-rgb {\n    --#{$prefix}#{$color}-rgb: #{$value};\n  }\n\n  @each $color, $value in $theme-colors-text {\n    --#{$prefix}#{$color}-text-emphasis:...

      FeatureSpecificTestSuiteBuilder<
              ?, ? extends OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>>>
          parentBuilder) {
    // TODO: Once invariant support is added, supply invariants to each of the
    // derived suites, to check that mutations to the derived collections are
    // reflected in the underlying map.

    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

        when(standardInfo.getFileInformationLevel()).thenReturn(FileInformation.FILE_STANDARD_INFO);
        when(internalInfo.getFileInformationLevel()).thenReturn(FileInformation.FILE_INTERNAL_INFO);

        // Verify each has correct level
        assertEquals(FileInformation.FILE_BASIC_INFO, basicInfo.getFileInformationLevel());
        assertEquals(FileInformation.FILE_STANDARD_INFO, standardInfo.getFileInformationLevel());