import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_LONG
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT_MAX
import okhttp3.internal.ws.WebSocketProtocol.toggleMask
import okhttp3.internal.ws.WebSocketProtocol.validateCloseCode
import okio.Buffer
import okio.BufferedSink
import okio.ByteString

/**
 * An [RFC 6455][rfc_6455]-compatible WebSocket frame writer.
 *

import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_BYTE_MAX
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_LONG
import okhttp3.internal.ws.WebSocketProtocol.PAYLOAD_SHORT
import okhttp3.internal.ws.WebSocketProtocol.toggleMask
import okio.Buffer
import okio.BufferedSource
import okio.ByteString

/**
 * An [RFC 6455][rfc_6455]-compatible WebSocket frame reader.
 *
 * This class is not thread safe.
 *

  internal const val CLOSE_CLIENT_GOING_AWAY = 1001

  /** Used when an empty close frame was received (i.e., without a status code). */
  internal const val CLOSE_NO_STATUS_CODE = 1005

  fun toggleMask(
    cursor: Buffer.UnsafeCursor,
    key: ByteArray,
  ) {
    var keyIndex = 0
    val keyLength = key.size
    do {
      val buffer = cursor.data
      var i = cursor.start