var err error
	var conn *amqp091.Connection
	var ch *amqp091.Channel

	isAMQPClosedErr := func(err error) bool {
		if err == amqp091.ErrClosed {
			return true
		}

		if nerr, ok := err.(*net.OpError); ok {
			return (nerr.Err.Error() == "use of closed network connection")
		}

		return false
	}

	target.connMutex.Lock()

	brokers := target.client.Brokers()
	if len(brokers) == 0 {
		return false, store.ErrNotConnected
	}
	return true, nil
}

// Save - saves the events to the store which will be replayed when the Kafka connection is active.
func (target *KafkaTarget) Save(eventData event.Event) error {
	if target.store != nil {
		if target.batch != nil {
			return target.batch.Add(eventData)
		}
		_, err := target.store.Put(eventData)

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.io.FileUtil;
import org.codelibs.core.log.Logger;

        String src = source.getConnection();
        if (src != null) {
            if (sourceDominant || target.getConnection() == null) {
                target.setConnection(src);
                target.setLocation("connection", source.getLocation("connection"));
            }
        }
    }

    protected void mergeScm_DeveloperConnection(

`data` and `raw_data` are mutually exclusive. You can only set one of them on each `ServerSentEvent`.

///

## Resuming with `Last-Event-ID` { #resuming-with-last-event-id }

When a browser reconnects after a connection drop, it sends the last received `id` in the `Last-Event-ID` header.

You can read it as a header parameter and use it to resume the stream from where the client left off:

 * configurations shared between HC4 and HC5 implementations.
 *
 * <p>Key properties and configurations:</p>
 * <ul>
 *   <li>CONNECTION_TIMEOUT_PROPERTY: Connection timeout setting.</li>
 *   <li>SO_TIMEOUT_PROPERTY: Socket timeout setting.</li>
 *   <li>PROXY_HOST_PROPERTY: Proxy host setting.</li>
 *   <li>PROXY_PORT_PROPERTY: Proxy port setting.</li>

        Mockito.when(mockConfig.getSessionLimit()).thenReturn(10);

        // Clear buffer cache for consistent test results
        BufferCache.clearCache();
    }

    /**
     * Test connection pool scalability with concurrent access
     */
    @Test
    public void testConnectionPoolConcurrentPerformance() throws Exception {
        SmbTransportPoolImpl pool = new SmbTransportPoolImpl();

        super(handle.getPipe(), th, null);
        this.handle = handle;
    }

    /**
     * Ensures that the tree connection is established.
     *
     * @return the tree handle implementation
     * @throws CIFSException if a connection error occurs
     */
    protected synchronized SmbTreeHandleImpl ensureTreeConnected() throws CIFSException {
        return this.handle.ensureTreeConnected();

     * certificate is issued to `example.com` and the request is to `localhost`, the connection will
     * fail. Use a custom [HostnameVerifier] to ignore such problems.
     *
     * Other TLS features are still used but provide no security benefits in absence of the above
     * gaps. For example, an insecure TLS connection is capable of negotiating HTTP/2 with ALPN and
     * it also has a regular-looking handshake.
     *

    /** Active error in the name service */
    public static final int ACT_ERR = 0x6;
    /** Name in conflict error */
    public static final int CFT_ERR = 0x7;

    // session service error codes
    /** Connection refused by the remote host */
    public static final int CONNECTION_REFUSED = -1;
    /** Not listening on the called name */
    public static final int NOT_LISTENING_CALLED = 0x80;