fix insecure hosts crash with an `IllegalArgumentException` on Android.


## Version 4.7.0

_2020-05-17_

 *  New: `HandshakeCertificates.Builder.addInsecureHost()` makes it easy to turn off security in
    private development environments that only carry test data. Prefer this over creating an
    all-trusting `TrustManager` because only hosts on the allowlist are insecure. From

    if (calls.size >= allocationLimit || noNewExchanges) return false

    // If the non-host fields of the address don't overlap, we're done.
    if (!this.route.address.equalsNonHost(address)) return false

    // If the host exactly matches, we're done: this connection can carry the address.
    if (address.url.host == this.route().address.url.host) {
      return true // This connection is a perfect match.
    }

       * ```
       */
      BASIC,

      /**
       * Logs request and response lines and their respective headers.
       *
       * Example:
       * ```
       * --> POST /greeting http/1.1
       * Host: example.com
       * Content-Type: plain/text
       * Content-Length: 3
       * --> END POST
       *
       * <-- 200 OK (22ms)
       * Content-Type: plain/text
       * Content-Length: 6
       * <-- END HTTP

    @Volatile var callsPerHost = AtomicInteger(0)
      private set

    fun reuseCallsPerHostFrom(other: AsyncCall) {
      this.callsPerHost = other.callsPerHost
    }

    val host: String
      get() = originalRequest.url.host

    val request: Request
      get() = originalRequest

    val call: RealCall
      get() = this@RealCall

    /**

        requestBuilder.removeHeader("Transfer-Encoding")
        requestBuilder.removeHeader("Content-Length")
        requestBuilder.removeHeader("Content-Type")
      }
    }

    // When redirecting across hosts, drop all authentication headers. This
    // is potentially annoying to the application layer since they have no
    // way to retain them.
    if (!userResponse.request.url.canReuseConnectionFor(url)) {

    private fun buildBootstrapClient(builder: Builder): Dns {
      val hosts = builder.bootstrapDnsHosts

      return if (hosts != null) {
        BootstrapDns(builder.url!!.host, hosts)
      } else {
        builder.systemDns
      }
    }

    internal fun isPrivateHost(host: String): Boolean {
      return PublicSuffixDatabase.get().getEffectiveTldPlusOne(host) == null
    }
  }

import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.buffer
import okio.sink
import okio.source

/**
 * A socket connection to a remote peer. A connection hosts streams which can send and receive
 * data.
 *
 * Many methods in this API are **synchronous:** the call is completed before the method returns.

    assertThat(routeSelector.hasNext()).isTrue()
    dns[PROXY_A_HOST] = dns.allocate(2)
    val selection1 = routeSelector.next()
    assertRoute(selection1.next(), address, proxyA, dns.lookup(PROXY_A_HOST, 0), PROXY_A_PORT)
    assertRoute(selection1.next(), address, proxyA, dns.lookup(PROXY_A_HOST, 1), PROXY_A_PORT)
    dns.assertRequests(PROXY_A_HOST)
    assertThat(selection1.hasNext()).isFalse()

      .assertLogEqual("Content-Length: 0")
      .assertLogEqual("<-- END HTTP")
      .assertNoMoreLogs()
    networkLogs
      .assertLogEqual("--> GET $url http/1.1")
      .assertLogEqual("Host: $host")
      .assertLogEqual("Connection: Keep-Alive")
      .assertLogEqual("Accept-Encoding: gzip")
      .assertLogMatch(Regex("""User-Agent: okhttp/.+"""))
      .assertLogEqual("--> END GET")

      }

      // Force handshake. This can throw!
      sslSocket.startHandshake()
      // block for session establishment
      val sslSocketSession = sslSocket.session
      val unverifiedHandshake = sslSocketSession.handshake()

      // Verify that the socket's certificates are acceptable for the target host.