val length = readInt(source)
      if (length == -1) return emptyList() // OkHttp v1.2 used -1 to indicate null.

      try {
        val certificateFactory = CertificateFactory.getInstance("X.509")
        val result = ArrayList<Certificate>(length)
        for (i in 0 until length) {
          val line = source.readUtf8LineStrict()
          val bytes = Buffer()