*  Fix: Improve pooling of connections that use proxy selectors.
 *  Fix: Don't leak connections when using ALPN on the desktop.
 *  Fix: Update Jetty ALPN to `7.1.2.v20141202` (Java 7) and `8.1.2.v20141202` (Java 8).
    This fixes a bug in resumed TLS sessions where the wrong protocol could be
    selected.
 *  Fix: Don't crash in SPDY and HTTP/2 when disconnecting before connecting.

private fun alpnBootVersionForPatchVersion(patchVersion: Int): String? {
  return when (patchVersion) {
    in 0..24 -> "8.1.0.v20141016"
    in 25..30 -> "8.1.2.v20141202"
    in 31..50 -> "8.1.3.v20150130"
    in 51..59 -> "8.1.4.v20150727"
    in 60..64 -> "8.1.5.v20150921"
    in 65..70 -> "8.1.6.v20151105"
    in 71..77 -> "8.1.7.v20160121"
    in 78..101 -> "8.1.8.v20160420"