if (logger.isLoggable(FINE)) logger.fine(frameLog(true, streamId, length, type, flags))
      streamId = source.readInt() and 0x7fffffff
      if (type != TYPE_CONTINUATION) throw IOException("$type != TYPE_CONTINUATION")
      if (streamId != previousStreamId) throw IOException("TYPE_CONTINUATION streamId changed")
    }
  }

  interface Handler {
    @Throws(IOException::class)
    fun data(
      inFinished: Boolean,

import okhttp3.internal.http2.Http2.FLAG_END_STREAM
import okhttp3.internal.http2.Http2.FLAG_NONE
import okhttp3.internal.http2.Http2.INITIAL_MAX_FRAME_SIZE
import okhttp3.internal.http2.Http2.TYPE_CONTINUATION
import okhttp3.internal.http2.Http2.TYPE_DATA
import okhttp3.internal.http2.Http2.TYPE_GOAWAY
import okhttp3.internal.http2.Http2.TYPE_HEADERS
import okhttp3.internal.http2.Http2.TYPE_PING

    frame.write(headerBlock, Http2.INITIAL_MAX_FRAME_SIZE.toLong())

    // Write the continuation frame, specifying no more frames are expected.
    writeMedium(frame, headerBlock.size.toInt())
    frame.writeByte(Http2.TYPE_CONTINUATION)
    frame.writeByte(FLAG_END_HEADERS)
    frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.writeAll(headerBlock)

    // Check writer sends the same bytes.