in 'a'..'f' -> this - 'a' + 10
    in 'A'..'F' -> this - 'A' + 10
    else -> -1
  }

internal infix fun Byte.and(mask: Int): Int = toInt() and mask

internal infix fun Short.and(mask: Int): Int = toInt() and mask

internal infix fun Int.and(mask: Long): Long = toLong() and mask

@Throws(IOException::class)
internal fun BufferedSink.writeMedium(medium: Int) {
  writeByte(medium.ushr(16) and 0xff)

  internal const val B0_FLAG_RSV3 = 16

  /** Byte 0 mask for the frame opcode. */
  internal const val B0_MASK_OPCODE = 15

  /** Flag in the opcode which indicates a control frame. */
  internal const val OPCODE_FLAG_CONTROL = 8

  /**
   * Byte 1 flag for whether the payload data is masked.
   *
   * If this flag is set, the next four

    TYPE_DISALLOWED -> TYPE_DISALLOWED

    else -> error("unexpected type: $type")
  }
}

internal infix fun Byte.and(mask: Int): Int = toInt() and mask

internal infix fun Short.and(mask: Int): Int = toInt() and mask

import okhttp3.internal.ws.WebSocketProtocol.B0_FLAG_RSV2
import okhttp3.internal.ws.WebSocketProtocol.B0_FLAG_RSV3
import okhttp3.internal.ws.WebSocketProtocol.B0_MASK_OPCODE
import okhttp3.internal.ws.WebSocketProtocol.B1_FLAG_MASK
import okhttp3.internal.ws.WebSocketProtocol.B1_MASK_LENGTH
import okhttp3.internal.ws.WebSocketProtocol.CLOSE_NO_STATUS_CODE
import okhttp3.internal.ws.WebSocketProtocol.OPCODE_BINARY

import java.io.IOException
import java.util.Random
import okhttp3.internal.ws.WebSocketProtocol.B0_FLAG_FIN
import okhttp3.internal.ws.WebSocketProtocol.B0_FLAG_RSV1
import okhttp3.internal.ws.WebSocketProtocol.B1_FLAG_MASK
import okhttp3.internal.ws.WebSocketProtocol.OPCODE_CONTROL_CLOSE
import okhttp3.internal.ws.WebSocketProtocol.OPCODE_CONTROL_PING
import okhttp3.internal.ws.WebSocketProtocol.OPCODE_CONTROL_PONG

        var value = value
        // Write the raw value for a single byte value.
        if (value < prefixMask) {
          out.writeByte(bits or value)
          return
        }

        // Write the mask to start a multibyte value.
        out.writeByte(bits or prefixMask)
        value -= prefixMask

        // Write 7 bits at a time 'til we're done.
        while (value >= 0x80) {
          val b = value and 0x7f

my-firewall.org my-gateway.de my-router.de my-vigor.de my-wan.de my.eu.org my.id myactivedirectory.com myamaze.net myasustor.com mycd.eu mycloud.by mydatto.com mydatto.net myddns.rocks mydissent.net mydobiss.com mydrobo.com myds.me myeffect.net myfast.host myfast.space myfirewall.org myforum.community myfritz.net myftp.biz myftp.org myhome-server.de myiphost.com myjino.ru mykolaiv.ua mymailer.com.tw mymediapc.net myoko.niigata.jp mypep.link mypets.ws myphotos.cc mypi.co mypsx.net myqnapcloud.com mysecuritycamera.com...

*.user.fm

// FASTVPS EESTI OU : https://fastvps.ru/
// Submitted by Likhachev Vasiliy <******@****.***>
fastvps-server.com
fastvps.host
myfast.host
fastvps.site
myfast.space

// Fedora : https://fedoraproject.org/
// submitted by Patrick Uiterwijk <******@****.***>
fedorainfracloud.org
fedorapeople.org
cloud.fedoraproject.org

1F191..1F19A  ; valid                  ;      ; NV8    # 6.0  SQUARED CL..SQUARED VS
1F19B..1F1AC  ; valid                  ;      ; NV8    # 9.0  SQUARED THREE D..SQUARED VOD
1F1AD         ; valid                  ;      ; NV8    # 13.0 MASK WORK SYMBOL
1F1AE..1F1E5  ; disallowed                             # NA   <reserved-1F1AE>..<reserved-1F1E5>