if (isClient) {
          "Server-sent frames must not be masked."
        } else {
          "Client-sent frames must be masked."
        },
      )
    }

    // Get frame length, optionally reading from follow-up bytes if indicated by special values.
    frameLength = (b1 and B1_MASK_LENGTH).toLong()
    if (frameLength == PAYLOAD_SHORT.toLong()) {

После этого можно протестировать, что он используется.

## Чтение файла `.env` { #reading-a-env-file }

Если у вас много настроек, которые могут часто меняться, возможно в разных окружениях, может быть удобно поместить их в файл и читать оттуда как переменные окружения.

"Context Managers", `with` ifadesiyle kullanabildiğiniz Python nesneleridir.

Örneğin, [bir dosyayı okumak için `with` kullanabilirsiniz](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

package jcifs.config;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Properties;

import jcifs.CIFSException;
import jcifs.Configuration;

/**
 * Configuration implementation reading the classic jcifs settings from properties
 *
 * @author mbechler
 */
public final class PropertyConfiguration extends BaseConfiguration implements Configuration {

		// Offset should always be aligned to b.shardSize
		// Can never happen unless there are programmer bugs
		return 0, errUnexpected
	}
	if b.rc == nil {
		// For the first ReadAt() call we need to open the stream for reading.
		b.currOffset = offset
		streamOffset := (offset/b.shardSize)*int64(b.h.Size()) + offset
		if len(b.data) == 0 && b.tillOffset != streamOffset {

    checkNotNull(file);
    checkNotNull(charset);
    return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
  }

  /**
   * Returns a new {@link ByteSource} for reading bytes from the given file.
   *
   * @since 14.0
   */
  public static ByteSource asByteSource(File file) {
    return new FileByteSource(file);
  }

  private static final class FileByteSource extends

        assertEquals(22, bytesEncoded);

        // Verify encoded data
        assertEquals(expectedAllocationSize, SMBUtil.readInt8(destinationBuffer, dstIndex));
        assertEquals(expectedEndOfFile, SMBUtil.readInt8(destinationBuffer, dstIndex + 8));
        assertEquals(expectedNumberOfLinks, SMBUtil.readInt4(destinationBuffer, dstIndex + 16));
        assertEquals(1, destinationBuffer[dstIndex + 20]); // deletePending

	ctx, cancel := context.WithTimeout(ctx, globalDriveConfig.GetMaxTimeout())
	defer cancel()

	// Use websocket when not reading data.
	if !opts.ReadData {
		resp, err := storageReadVersionRPC.Call(ctx, client.gridConn, grid.NewMSSWith(map[string]string{
			storageRESTDiskID:           *client.diskID.Load(),
			storageRESTOrigVolume:       origvolume,

    // Append 10 more bytes to the source.
    source.append(newPreFilledByteArray(5, 10));

    // The stream reports no bytes... importantly, it doesn't read the byte at index 5 when it
    // should be reading the byte at index 10.
    // We could use a custom InputStream instead to make the read start at index 10, but since this
    // is a racy situation anyway, this behavior seems reasonable.
    assertEquals(-1, in.read());
  }

import java.net.UnknownHostException;

import jcifs.smb1.util.Encdec;

/**
 * This class provides random access to files stored on an SMB/CIFS network resource.
 * It implements the DataInput and DataOutput interfaces for reading and writing primitive
 * Java data types to the file.
 */
public class SmbRandomAccessFile implements DataOutput, DataInput {

    private static final int WRITE_OPTIONS = 0x0842;

    private final SmbFile file;