name     string
		stats    string
		expected int
	}{
		{
			"invalid stats",
			invalidStats,
			-1,
		},
		{
			"valid active connections",
			downstreamCxPostiveAcStats,
			19,
		},
		{
			"zero active connections",
			downstreamCxZeroAcStats,
			0,
		},
	}

	for _, tt := range cases {
		t.Run(tt.name, func(t *testing.T) {

import okhttp3.internal.toImmutableList

/**
 * A specification for a connection to an origin server. For simple connections, this is the
 * server's hostname and port. If an explicit proxy is requested (or [no proxy][Proxy.NO_PROXY] is
 * explicitly requested), this also includes that proxy information. For secure connections the
 * address also includes the SSL socket factory, hostname verifier, and certificate pinner.
 *

//
// The config must not already provide an explicit transport.
//
// The returned function allows forcefully closing all active connections.
//
// The returned transport periodically checks the manager to determine if the
// certificate has changed. If it has, the transport shuts down all existing client
// connections, forcing the client to re-handshake with the server and use the
// new certificate.
//

      ),
      panels.timeSeries.base(
        'Events', queries.pilotEvents, |||
          Size of each xDS push.
        |||
      ),
      panels.timeSeries.base(
        'Connections', queries.xdsConnections, |||
          Total number of XDS connections
        |||
      ),
      panels.timeSeries.base(
        'Push Errors', queries.xdsErrors, |||

 *
 *  4. If there's no existing connection, make a list of routes (which may require blocking DNS
 *     lookups) and attempt a new connection them. When failures occur, retries iterate the list of
 *     available routes.
 *
 * If the pool gains an eligible connection while DNS, TCP, or TLS work is in flight, this finder
 * will prefer pooled connections. Only pooled HTTP/2 connections are used for such de-duplication.
 *

A **Manager** is used to manage all incoming and outgoing connections to a server.

On startup all remote servers must be specified. 
From that individual connections will be spawned to each remote server, 
or incoming requests will be hooked up to the appropriate connection.

To get a connection to a specific server, use `Manager.Connection(host)` to get a connection to the specified host.
From this connection individual requests can be made.

	"github.com/minio/minio/internal/rest"
)

// globalGrid is the global grid manager.
var globalGrid atomic.Pointer[grid.Manager]

// globalGridStart is a channel that will block startup of grid connections until closed.
var globalGridStart = make(chan struct{})

func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
	hosts, local := eps.GridHosts()
	lookupHost := globalDNSCache.LookupHost

    /**
     * Check the recorded connections for a specific address - this indicates that a connection would have been made to this address with a non-test {@link SocksServer}.
     *
     * @param target IP address to which to verify connection
     * @return {@code true} if the connection was made to the target; {@code false} otherwise
     */

The new type [KeepAliveConfig] permits fine-tuning the keep-alive
options for TCP connections, via a new [TCPConn.SetKeepAliveConfig]

  }

  final NetworkConnections<N, E> checkedConnections(N node) {
    NetworkConnections<N, E> connections = nodeConnections.get(node);
    if (connections == null) {
      checkNotNull(node);
      throw new IllegalArgumentException(String.format(NODE_NOT_IN_GRAPH, node));
    }
    return connections;
  }

  final N checkedReferenceNode(E edge) {
    N referenceNode = edgeToReferenceNode.get(edge);