* See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http2

import okhttp3.internal.format
import okio.ByteString.Companion.encodeUtf8

object Http2 {
  @JvmField
  val CONNECTION_PREFACE = "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n".encodeUtf8()

  /** The initial max frame size, applied independently writing to, or reading from the peer. */

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
import okhttp3.internal.http2.Http2.TYPE_PUSH_PROMISE

    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_PING)
    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_HEADERS)
    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_PING)
    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_DATA)
    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_RST_STREAM)
  }

  @Test fun outgoingWritesAreBatched() {

import okhttp3.internal.http2.Http2.FLAG_END_STREAM
import okhttp3.internal.http2.Http2.FLAG_PADDED
import okhttp3.internal.http2.Http2.FLAG_PRIORITY
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

import assertk.assertions.isEqualTo
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.matches
import java.net.http.HttpClient
import java.net.http.HttpClient.Redirect.NORMAL
import java.net.http.HttpRequest
import java.net.http.HttpResponse.BodyHandlers
import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop

import java.util.logging.LogRecord
import java.util.logging.Logger
import okhttp3.OkHttpClient
import okhttp3.internal.SuppressSignatureCheck
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.http2.Http2
import okhttp3.internal.platform.android.AndroidLog.androidLog

private val LogRecord.androidLevel: Int
  get() =
    when {
      level.intValue() > Level.INFO.intValue() -> Log.WARN

    assumeNotWindows()

    serverTruncatesRequestButTrailersCanStillBeRead(http2 = false)
  }

  @Test
  fun serverTruncatesRequestButTrailersCanStillBeReadHttp2() {
    enableProtocol(Protocol.HTTP_2)
    serverTruncatesRequestButTrailersCanStillBeRead(http2 = true)
  }

  private fun serverTruncatesRequestButTrailersCanStillBeRead(http2: Boolean) {
    val mockResponse =
      MockResponse
        .Builder()

          if (Thread.currentThread() != currentThread) {
            return
          }

          // https://timothybasanov.com/2016/05/26/java-pre-master-secret.html
          // https://security.stackexchange.com/questions/35639/decrypting-tls-in-wireshark-when-using-dhe-rsa-ciphersuites
          // https://stackoverflow.com/questions/36240279/how-do-i-extract-the-pre-master-secret-using-an-openssl-based-client

		// Go net/http automatically unzip if content-type is
		// gzip disable this feature, as we are always interested
		// in raw stream.
		DisableCompression: true,
	}

	// https://github.com/golang/go/issues/23559
	// https://github.com/golang/go/issues/42534
	// https://github.com/golang/go/issues/43989
	// https://github.com/golang/go/issues/33425
	// https://github.com/golang/go/issues/29246

import okhttp3.internal.buildConnectionPool
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.concurrent.withLock
import okhttp3.internal.connection.RealConnectionPool
import okhttp3.internal.http2.Http2
import okhttp3.internal.taskRunnerInternal
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule.Companion.LOOM_PROPERTY
import okhttp3.testing.PlatformRule.Companion.getPlatformSystemProperty