## Install `websockets` { #install-websockets }

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and install `websockets` (a Python library that makes it easy to use the "WebSocket" protocol):

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets client { #websockets-client }

### In production { #in-production }

 * Read <a href="../../../ntlmhttpauth.html">jCIFS NTLM HTTP Authentication and the Network Explorer Servlet</a> for complete details.
 */

/**
 * An HTTP servlet filter that provides NTLM authentication support for SMB1 protocol.
 * This filter allows web applications to authenticate users via NTLM/Windows authentication.
 */
public class NtlmHttpFilter implements Filter {

    /**
     * Default constructor.
     */

import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;

import jcifs.smb1.util.LogStream;

/**
 * This class simplifies communication for protocols that support
 * multiplexing requests. It encapsulates a stream and some protocol
 * knowledge (provided by a concrete subclass) so that connecting,
 * disconnecting, sending, and receiving can be syncronized

package jcifs.smb1.netbios;

import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;

import jcifs.smb1.Config;
import jcifs.smb1.util.Hexdump;

/**
 * NetBIOS name representation for SMB1 protocol.
 * This class represents a NetBIOS name with its associated type and scope.
 */
public class Name {

    private static final int TYPE_OFFSET = 31;
    private static final int SCOPE_OFFSET = 33;

  }

  @Test
  fun testH2PriorKnowledgeServerFallback() {
    try {
      server.protocols = listOf(Protocol.H2_PRIOR_KNOWLEDGE, Protocol.HTTP_1_1)
      fail<Unit>()
    } catch (expected: IllegalArgumentException) {
      assertThat(expected.message).isEqualTo(
        "protocols containing h2_prior_knowledge cannot use other protocols: " +
          "[h2_prior_knowledge, http/1.1]",
      )
    }
  }

  @Test

      std::vector<std::unique_ptr<Device>> devices) = 0;

  // Block until all pending nodes are finished.
  virtual absl::Status AsyncWait() = 0;

  // Add a function (serialized FunctionDef protocol buffer) so that it can
  // be executed as an op. Return error if the function with the same name
  // already exists.
  virtual absl::Status AddFunctionDef(const FunctionDef& fdef) = 0;

import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.SMBSigningDigest;
import jcifs.internal.util.SMBUtil;
import jcifs.smb.SmbException;
import jcifs.util.Hexdump;

/**
 * Base class for SMB2/SMB3 protocol messages.
 *
 * This abstract class provides common functionality for all SMB2/SMB3
 * message types including encoding, decoding, and message handling.
 *
 * @author mbechler
 */

            }
        }
        return roleTypeList;
    }

    /**
     * Extracts role type information from FTP (File Transfer Protocol) response data.
     * Processes FTP metadata to extract file owner and group information.
     *
     * @param responseData the response data containing FTP metadata

import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.dcerpc.DcerpcHandle;

/**
 * Client implementation for the SMB Witness RPC protocol (MS-SWN).
 * Provides communication with witness servers for monitoring SMB resource availability.
 */
public class WitnessRpcClient implements AutoCloseable {

internal communication only. It is not built for use in untrusted environments
or networks.

For performance reasons, the default TensorFlow server does not include any
authorization protocol and sends messages unencrypted. It accepts connections
from anywhere, and executes the graphs it is sent without performing any checks.
Therefore, if you run a `tf.train.Server` in your network, anybody with access