## Renvoyer une `Response` personnalisée

L'exemple ci-dessus montre toutes les parties dont vous avez besoin, mais il n'est pas encore très utile, car vous auriez pu retourner l'`item` directement, et **FastAPI** l'aurait mis dans une `JSONResponse` pour vous, en le convertissant en `dict`, etc. Tout cela par défaut.

      throw ProtocolException("constructed strings not supported for DER")
    }
    return source.readUtf8(bytesLeft)
  }

  fun readObjectIdentifier(): String {
    val result = Buffer()
    val dot = '.'.code.toByte().toInt()
    when (val xy = readVariableLengthLong()) {
      in 0L until 40L -> {
        result.writeDecimalLong(0)
        result.writeByte(dot)
        result.writeDecimalLong(xy)
      }

	for i := range cstat.Network.Interfaces {
		inter := cstat.Network.Interfaces[i]
		iStat := statsapi.InterfaceStats{
			Name:     inter.Name,
			RxBytes:  &inter.RxBytes,
			RxErrors: &inter.RxErrors,
			TxBytes:  &inter.TxBytes,
			TxErrors: &inter.TxErrors,
		}

		if inter.Name == defaultNetworkInterfaceName {
			iStats.InterfaceStats = iStat
		}

		iStats.Interfaces = append(iStats.Interfaces, iStat)
	}

        input.countLines()
    }


private
fun BufferedInputStream.countLines(): Long {
    val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
    val newLine = '\n'.code.toByte()

    var count = 0L
    var noNewLineBeforeEOF = false
    var readCount = read(buffer)

    while (readCount != -1) {
        for (idx in 0 until readCount) {

          // and convert back to byte.
          val bufferInt: Int = buffer[i].toInt()
          val keyInt: Int = key[keyIndex].toInt()
          buffer[i] = (bufferInt xor keyInt).toByte()

          i++
          keyIndex++
        }
      }
    } while (cursor.next() != -1)
  }

  fun closeCodeExceptionMessage(code: Int): String? {
    return if (code < 1000 || code >= 5000) {

	Pad_cgo_0  [1]byte
	Mtu        uint32
	Metric     uint32
	Baudrate   uint32
	Ipackets   uint32
	Ierrors    uint32
	Opackets   uint32
	Oerrors    uint32
	Collisions uint32
	Ibytes     uint32
	Obytes     uint32
	Imcasts    uint32
	Omcasts    uint32
	Iqdrops    uint32
	Noproto    uint32
	Lastchange Timeval32
}

type IfaMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8

    <div class="termy">

    ```console
    $ flit install --deps develop --pth-file

    ---> 100%
    ```

    </div>

Il installera toutes les dépendances et votre FastAPI local dans votre environnement local.

#### Utiliser votre FastAPI local

	Link_state int32
	Mtu        uint64
	Metric     uint64
	Baudrate   uint64
	Ipackets   uint64
	Ierrors    uint64
	Opackets   uint64
	Oerrors    uint64
	Collisions uint64
	Ibytes     uint64
	Obytes     uint64
	Imcasts    uint64
	Omcasts    uint64
	Iqdrops    uint64
	Noproto    uint64
	Lastchange Timespec
}

type IfaMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8

	Link_state int32
	Mtu        uint64
	Metric     uint64
	Baudrate   uint64
	Ipackets   uint64
	Ierrors    uint64
	Opackets   uint64
	Oerrors    uint64
	Collisions uint64
	Ibytes     uint64
	Obytes     uint64
	Imcasts    uint64
	Omcasts    uint64
	Iqdrops    uint64
	Noproto    uint64
	Lastchange Timespec
}

type IfaMsghdr struct {
	Msglen    uint16
	Version   uint8
	Type      uint8

	Metric       uint32
	Pad          uint32
	Baudrate     uint64
	Ipackets     uint64
	Ierrors      uint64
	Opackets     uint64
	Oerrors      uint64
	Collisions   uint64
	Ibytes       uint64
	Obytes       uint64
	Imcasts      uint64
	Omcasts      uint64
	Iqdrops      uint64
	Noproto      uint64
	Capabilities uint32
	Lastchange   Timeval
	Mclpool      [7]Mclpool
}

type IfaMsghdr struct {