val stream = connection.newStream(headerEntries("b", "banana"), true)
    val sink = stream.sink
    sink.write(Buffer().writeUtf8("abcde"), 5)
    stream.writeTimeout().timeout(500, TimeUnit.MILLISECONDS)
    val startNanos = System.nanoTime()
    sink.write(Buffer().writeUtf8("f"), 1)
    assertFailsWith<InterruptedIOException> {
      sink.flush() // This will time out waiting on the write window.
    }

    override fun contentLength(): Long = chunk!!.size * 8L

    override fun writeTo(sink: BufferedSink) {
      try {
        var i = 0
        while (i < contentLength()) {
          sink.write(chunk!!)
          sink.flush()
          Thread.sleep(100)
          i += chunk.size
        }
      } catch (e: IOException) {
        ioe = e

              override fun contentLength(): Long = postBytes.size.toLong()

              override fun writeTo(sink: BufferedSink) {
                sink.write(postBytes) // push bytes into the stream's buffer
                sink.flush() // Http2Connection.writeData subject to write window
                sink.close() // Http2Connection.writeData empty frame
              }
            },
        ),
      )

import okhttp3.internal.tls.CertificateChainCleaner
import okhttp3.internal.tls.OkHostnameVerifier
import okhttp3.internal.toImmutableList
import okhttp3.internal.unmodifiable
import okhttp3.internal.ws.RealWebSocket
import okio.Sink
import okio.Source
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

/**
 * Factory for [calls][Call], which can be used to send HTTP requests and read their responses.
 *

    This simple option dramatically changes the behavior of the request body and of the entire
    call.

    The `RequestBody.writeTo()` method may now retain a reference to the provided sink and
    hand it off to another thread to write to it after `writeTo` returns.

    The `EventListener` may now see requests and responses interleaved in ways not previously

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