Ejercicio en Kotlin de aplicación cliente-servidor con protocolo de comunicación | Operating systems, scripting, PowerShell and security

Kotlin, Red

Contenidos

Servidor
Cliente

Servidor

import java.io.*
import java.net.*

fun main() {
    val serverSocket = ServerSocket(12345)
    println("Servidor en espera de conexiones...")

    while (true) {
        val clientSocket = serverSocket.accept()
        val input = BufferedReader(InputStreamReader(clientSocket.getInputStream()))
        val output = PrintWriter(clientSocket.getOutputStream(), true)

        val clientMessage = input.readLine()
        when (clientMessage) {
            "HOLA" -> {
                val random = (0..1).random()
                if (random == 0) {
                    output.println("NACK")
                } else {
                    output.println("ACK")
                    receiveAndDisplayStudent(clientSocket)
                }
            }
            else -> output.println("NACK")
        }

        clientSocket.close()
    }
}

fun receiveAndDisplayStudent(socket: Socket) {
    val input = ObjectInputStream(socket.getInputStream())
    val student = input.readObject() as Alumno
    println("Alumno recibido: ${student.nombre}, ${student.apellido}, ${student.edad}")
}

data class Alumno(val nombre: String, val apellido: String, val edad: Int) : Serializable

import java.io.*

import java.net.*

fun main() {

val serverSocket = ServerSocket(12345)

println("Servidor en espera de conexiones...")

while (true) {

val clientSocket = serverSocket.accept()

val input = BufferedReader(InputStreamReader(clientSocket.getInputStream()))

val output = PrintWriter(clientSocket.getOutputStream(), true)

val clientMessage = input.readLine()

when (clientMessage) {

"HOLA" -> {

val random = (0..1).random()

if (random == 0) {

output.println("NACK")

} else {

output.println("ACK")

receiveAndDisplayStudent(clientSocket)

}

else -> output.println("NACK")

}

clientSocket.close()

}

fun receiveAndDisplayStudent(socket: Socket) {

val input = ObjectInputStream(socket.getInputStream())

val student = input.readObject() as Alumno

println("Alumno recibido: ${student.nombre}, ${student.apellido}, ${student.edad}")

}

data class Alumno(val nombre: String, val apellido: String, val edad: Int) : Serializable

Cliente

import java.io.*
import java.net.*

fun main() {
    val serverAddress = "localhost"
    val serverPort = 12345

    val clientSocket = Socket(serverAddress, serverPort)
    val output = PrintWriter(clientSocket.getOutputStream(), true)
    val input = BufferedReader(InputStreamReader(clientSocket.getInputStream()))

    output.println("HOLA")
    val serverResponse = input.readLine()

    when (serverResponse) {
        "ACK" -> {
            val student = Alumno("John", "Doe", 25)
            val objectOutput = ObjectOutputStream(clientSocket.getOutputStream())
            objectOutput.writeObject(student)
        }
        "NACK" -> println("Servidor respondió con NACK, finalizando ejecución del cliente.")
        else -> println("Respuesta inesperada del servidor.")
    }

    clientSocket.close()
}

import java.io.*

import java.net.*

fun main() {

val serverAddress = "localhost"

val serverPort = 12345

val clientSocket = Socket(serverAddress, serverPort)

val output = PrintWriter(clientSocket.getOutputStream(), true)

val input = BufferedReader(InputStreamReader(clientSocket.getInputStream()))

output.println("HOLA")

val serverResponse = input.readLine()

when (serverResponse) {

"ACK" -> {

val student = Alumno("John", "Doe", 25)

val objectOutput = ObjectOutputStream(clientSocket.getOutputStream())

objectOutput.writeObject(student)

}

"NACK" -> println("Servidor respondió con NACK, finalizando ejecución del cliente.")

else -> println("Respuesta inesperada del servidor.")

}

clientSocket.close()

}

Ejercicio en Kotlin de aplicación cliente-servidor con protocolo de comunicación (Red, Kotlin)

Servidor

Cliente

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