val streamsCopy: Array<Http2Stream>
      withLock {
        streamsCopy = streams.values.toTypedArray()
        isShutdown = true
      }

      // Fail all streams created after the last good stream ID.
      for (http2Stream in streamsCopy) {
        if (http2Stream.id > lastGoodStreamId && http2Stream.isLocallyInitiated) {
          http2Stream.receiveRstStream(REFUSED_STREAM)

import okhttp3.internal.http.HttpMethod
import okhttp3.internal.http2.ErrorCode
import okhttp3.internal.http2.Header
import okhttp3.internal.http2.Http2Connection
import okhttp3.internal.http2.Http2Stream
import okhttp3.internal.immutableListOf
import okhttp3.internal.platform.Platform
import okhttp3.internal.threadFactory
import okhttp3.internal.toImmutableList
import okhttp3.internal.ws.RealWebSocket