# WebSockets

When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.

It is provided directly by Starlette, but you can import it from `fastapi`:

```python
from fastapi import WebSocket
```

/// tip

    }

    /**
     * Get the preferred size for send operations
     *
     * @return preferred send size in bytes
     */
    public int getPreferredSendSize() {
        return preferredSendSize;
    }

    /**
     * Set the preferred size for send operations
     *
     * @param preferredSendSize preferred send size in bytes
     */

        } else {
            final Trans2FindFirst2 req = new Trans2FindFirst2("\\", "*", SmbFile.ATTR_DIRECTORY);
            final Trans2FindFirst2Response resp = new Trans2FindFirst2Response();
            tree.send(req, resp);
        }
    }

    /* 0 - not connected
     * 1 - connecting
     * 2 - connected
     * 3 - disconnecting
     */
    int connectionState;
    int uid;
    Vector trees;

  ) : SocketEffect

  /**
   * On HTTP/2, send a [GOAWAY frame](https://tools.ietf.org/html/rfc7540#section-6.8) immediately
   * after the response and will close the connection when the client's socket is exhausted.
   *
   * On HTTP/1 this closes the socket.
   */
  public object ShutdownConnection : SocketEffect

  /**
   * On HTTP/2 this will send the error code on the stream.
   *

							dst = (dst + 1) % len(managers)
						}
						local := managers[src]
						conn := local.Connection(hosts[dst])
						if conn == nil {
							b.Fatal("No connection")
						}
						// Send the payload.
						t := time.Now()
						resp, err := conn.Request(ctx, handlerTest, payload)
						latency += time.Since(t).Nanoseconds()
						if err != nil {
							if debugReqs {
								fmt.Println(err.Error())

        when(fileHandle.acquire()).thenReturn(fileHandle);
        when(fileHandle.getTree()).thenReturn(tree);

        // Mock response and send behavior
        Smb2IoctlResponse resp = mock(Smb2IoctlResponse.class);
        when(resp.getOutputLength()).thenReturn(42);
        when(tree.send(any(Smb2IoctlRequest.class), any())).thenReturn(resp);

        byte[] out = new byte[10];

        <h1>WebSocket Chat</h1>
        <h2>Your ID: <span id="ws-id"></span></h2>
        <form action="" onsubmit="sendMessage(event)">
            <input type="text" id="messageText" autocomplete="off"/>
            <button>Send</button>
        </form>
        <ul id='messages'>
        </ul>
        <script>
            var client_id = Date.now()
            document.querySelector("#ws-id").textContent = client_id;

import org.codelibs.fess.mylasta.mail.EsStatusPostcard;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.mail.send.hook.SMailCallbackContext;
import org.lastaflute.core.mail.Postbox;

/**
 * Job for pinging search engine.
 */
public class PingSearchEngineJob {

    /**
     * Default constructor.
     */

func (c *Target) Endpoint() string {
	return ""
}

func (c *Target) String() string {
	return "console"
}

// Send log message 'e' to console
func (c *Target) Send(e any) error {
	entry, ok := e.(log.Entry)
	if !ok {
		return fmt.Errorf("Uexpected log entry structure %#v", e)
	}
	if logger.IsJSON() {
		logJSON, err := json.Marshal(&entry)
		if err != nil {
			return err
		}

            when(existsResponse.getAttributes()).thenReturn(0); // Not found
            when(mockTreeHandle.send(any(), any(SmbComQueryInformationResponse.class))).thenReturn(existsResponse);

            // Mock the actual mkdir call
            when(mockTreeHandle.send(any(SmbComCreateDirectory.class), any(SmbComBlankResponse.class)))
                    .thenReturn(mock(SmbComBlankResponse.class));