val retryMs = source.readRetryMs()
          if (retryMs != -1L) {
            callback.onRetryChange(retryMs)
          }
        }

        -1 -> {
          val lineEnd = source.indexOfElement(CRLF)
          if (lineEnd != -1L) {
            // Skip the line and newline
            source.skip(lineEnd)
            source.select(options)
          } else {
            return false // No more newlines.

 * double-quoted string.
 */
@Throws(EOFException::class)
private fun Buffer.readQuotedString(): String? {
  require(readByte() == '\"'.code.toByte())
  val result = Buffer()
  while (true) {
    val i = indexOfElement(QUOTED_STRING_DELIMITERS)
    if (i == -1L) return null // Unterminated quoted string.

    if (this[i] == '"'.code.toByte()) {
      result.write(this, i)
      // Consume '"'.
      readByte()