if IsConnErr(err) {
			return store.ErrNotConnected
		}
		return err
	}

	// Delete the event from store.
	return target.store.Del(key)
}

// Close - closes underneath connections to PostgreSQL database.
func (target *PostgreSQLTarget) Close() error {
	close(target.quitCh)
	if target.updateStmt != nil {
		// FIXME: log returned error. ignore time being.
		_ = target.updateStmt.Close()
	}

  /**
   * Release any resources held by this dispatcher. Any requests that are currently being dispatched
   * should return immediately. Responses returned after shutdown will not be transmitted: their
   * socket connections have already been closed.
   */
  public open override fun close() {}

import jcifs.smb1.dcerpc.msrpc.lsarpc;
import jcifs.smb1.dcerpc.msrpc.netdfs;
import jcifs.smb1.dcerpc.msrpc.samr;
import jcifs.smb1.dcerpc.msrpc.srvsvc;

/**
 * DCERPC binding information for RPC connections.
 * This class manages the binding parameters and interface registry for DCERPC communications.
 */
public class DcerpcBinding {

    private static HashMap INTERFACES;

    static {

    /**
     * Named pipe status indicating the pipe is disconnected.
     */
    public static final int STATUS_DISCONNECTED = 1;

    /**
     * Named pipe status indicating the pipe is listening for connections.
     */
    public static final int STATUS_LISTENING = 2;

    /**
     * Named pipe status indicating the connection is established and operational.
     */
    public static final int STATUS_CONNECTION_OK = 3;

connectToMinio() {
  SCHEME=$1
  ATTEMPTS=0 ; LIMIT=29 ; # Allow 30 attempts
  set -e ; # fail if we can't read the keys.
  ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ;
  set +e ; # The connections to minio are allowed to fail.
  echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" ;
  MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" ;
  $MC_COMMAND ;

    /** Task for monitoring idle connections */
    private TimeoutTask connectionMonitorTask;

    /** Connection timeout in milliseconds */
    protected Integer connectionTimeout;

    /** Maximum total number of connections */
    protected Integer maxTotalConnections;

    /** Maximum connections per route */
    protected Integer maxConnectionsPerRoute;

$ adb shell setprop log.tag.okhttp.TaskRunner DEBUG
$ adb logcat '*:E' 'okhttp.Http2:D' 'okhttp.TaskRunner:D'
```

### HTTP/2 Frame Logging

This logs inbound (`<<`) and outbound (`>>`) frames for HTTP/2 connections.

```
[2020-01-01 00:00:00] >> CONNECTION 505249202a20485454502f322e300d0a0d0a534d0d0a0d0a
[2020-01-01 00:00:00] >> 0x00000000     6 SETTINGS
[2020-01-01 00:00:00] >> 0x00000000     4 WINDOW_UPDATE

              tunnelRequest = nextTunnelRequest,
            ),
        )
      }

      else -> {
        val failure =
          ProtocolException(
            "Too many tunnel connections attempted: $MAX_TUNNEL_ATTEMPTS",
          )
        call.eventListener.connectFailed(call, route.socketAddress, route.proxy, null, failure)
        connectionPool.connectionListener.connectFailed(route, call, failure)

		}
		for _, server := range t.Servers {
			server.Close()
		}
		for _, listener := range t.Listeners {
			listener.Close()
		}
	})
}

// WaitAllConnect will wait for all connections to be established.
func (t *TestGrid) WaitAllConnect(ctx context.Context) {
	for _, manager := range t.Managers {
		for _, remote := range manager.Targets() {
			if manager.HostName() == remote {
				continue
			}

```

### Connection Pool Tuning

```java
container.singleton("httpClient", HcHttpClient.class, client -> {
    client.setMaxConnections(200);          // Total connections
    client.setMaxConnectionsPerRoute(20);   // Per-host connections
    client.setConnectionTimeout(30000);     // Connection timeout
    client.setSocketTimeout(60000);         // Read timeout
});
```

### Memory Management

```java