check(hasResponseHeaders || isLocallyInitiated) {
        "reply before requesting the sink"
      }
    }
    return sink
  }

  /**
   * Abnormally terminate this stream. This blocks until the `RST_STREAM` frame has been
   * transmitted.
   */
  @Throws(IOException::class)
  fun close(
    rstStatusCode: ErrorCode,
    errorException: IOException?,
  ) {

    when OkHttp retrieves ALPN state on a closed connection.


## Version 4.9.3

_2021-11-21_

 *  Fix: Don't fail HTTP/2 responses if they complete before a `RST_STREAM` is sent.


## Version 4.9.2

_2021-09-30_

 *  Fix: Don't include potentially-sensitive header values in `Headers.toString()` or exceptions.