be called.

    Web sockets have always been had pings, but pings on HTTP/2 connections is
    new in this release. Pings are used for connections that are busy carrying
    calls and for idle connections in the connection pool. (Pings do not impact
    when pooled connections are evicted).

    If you have a configured ping interval, you should confirm that it is long

     *   increase availability of multi-homed services.
     *
     * * **Stale pooled connections.** The [ConnectionPool] reuses sockets
     *   to decrease request latency, but these connections will occasionally time out.
     *
     * * **Unreachable proxy servers.** A [ProxySelector] can be used to

password             (string)    MQTT password
qos                  (number)    set the quality of service priority, defaults to '0'
keep_alive_interval  (duration)  keep-alive interval for MQTT connections in s,m,h,d
reconnect_interval   (duration)  reconnect interval for MQTT connections in s,m,h,d
queue_dir            (path)      staging dir for undelivered messages e.g. '/home/events'

      MockResponse(body = "XXX"),
    )
    val connections: MutableList<RealConnection?> = ArrayList()
    val localClient =
      client.newBuilder().eventListener(
        object : EventListener() {
          override fun connectionAcquired(
            call: Call,
            connection: Connection,
          ) {
            connections.add(connection as RealConnection)
          }
        },

 * international domain names work everywhere. For example, "σ" encodes as "xn--4xa". The encoded
 * string is not human readable, but can be used with classes like [InetAddress] to establish
 * connections.
 *
 * ## Why another URL model?
 *
 * Java includes both [java.net.URL][URL] and [java.net.URI][URI]. We offer a new URL
 * model to address problems that the others don't.
 *

* Bump GCE debian image to container-v1-3-v20160604 ([#26851](https://github.com/kubernetes/kubernetes/pull/26851), [@zmerlynn](https://github.com/zmerlynn))
* Option to enable http2 on client connections. ([#25280](https://github.com/kubernetes/kubernetes/pull/25280), [@timothysc](https://github.com/timothysc))