simple request and response logging. It may be configured to log headers and
    bodies for debugging. It requires this Maven dependency:

     ```xml
     <dependency>
       <groupId>com.squareup.okhttp</groupId>
       <artifactId>logging-interceptor</artifactId>
       <version>2.6.0</version>
     </dependency>
     ```

    Configure basic logging like this:

    ```java

  }

  // Check for too few groups. We wanted exactly four.
  return b == addressOffset + 4
}

/** Encodes an IPv6 address in canonical form according to RFC 5952. */
internal fun inet6AddressToAscii(address: ByteArray): String {
  // Go through the address looking for the longest run of 0s. Each group is 2-bytes.
  // A run must be longer than one group (section 4.2.2).

      var pkcs8Base64: String? = null
      for (match in PEM_REGEX.findAll(certificateAndPrivateKeyPem)) {
        when (val label = match.groups[1]!!.value) {
          "CERTIFICATE" -> {
            require(certificatePem == null) { "string includes multiple certificates" }
            certificatePem = match.groups[0]!!.value // Keep --BEGIN-- and --END-- for certificates.
          }
          "PRIVATE KEY" -> {