Desarrollar una aplicación de chat en kotlin, tanto la parte cliente (visual con JavaFX), como la parte servidor (no visual) | Operating systems, scripting, PowerShell and security

Kotlin, Red

Contenidos

Servidor
Cliente

Servidor

import java.io.BufferedReader
import java.io.IOException
import java.io.InputStreamReader
import java.io.PrintWriter
import java.net.ServerSocket
import java.net.Socket
import java.util.concurrent.CopyOnWriteArrayList

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

    val clients = CopyOnWriteArrayList<PrintWriter>()

    while (true) {
        val clientSocket = serverSocket.accept()
        val clientOutput = PrintWriter(clientSocket.getOutputStream(), true)
        clients.add(clientOutput)

        Thread {
            val input = BufferedReader(InputStreamReader(clientSocket.getInputStream()))
            val clientName = input.readLine() ?: "Usuario Anónimo"

            broadcast("$clientName se ha unido al chat.", clients)

            while (true) {
                val message = input.readLine() ?: break
                broadcast("$clientName: $message", clients)
            }

            clients.remove(clientOutput)
            clientSocket.close()
            broadcast("$clientName se ha desconectado.", clients)
        }.start()
    }
}

fun broadcast(message: String, clients: List<PrintWriter>) {
    for (client in clients) {
        client.println(message)
    }
}

import java.io.BufferedReader

import java.io.IOException

import java.io.InputStreamReader

import java.io.PrintWriter

import java.net.ServerSocket

import java.net.Socket

import java.util.concurrent.CopyOnWriteArrayList

fun main() {

val serverSocket = ServerSocket(12345)

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

val clients = CopyOnWriteArrayList<PrintWriter>()

while (true) {

val clientSocket = serverSocket.accept()

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

clients.add(clientOutput)

Thread {

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

val clientName = input.readLine() ?: "Usuario Anónimo"

broadcast("$clientName se ha unido al chat.", clients)

while (true) {

val message = input.readLine() ?: break

broadcast("$clientName: $message", clients)

}

clients.remove(clientOutput)

clientSocket.close()

broadcast("$clientName se ha desconectado.", clients)

}.start()

}

fun broadcast(message: String, clients: List<PrintWriter>) {

for (client in clients) {

client.println(message)

}

Cliente

import javafx.application.Application
import javafx.application.Application.launch
import javafx.application.Platform
import javafx.scene.Scene
import javafx.scene.control.TextArea
import javafx.scene.control.TextField
import javafx.scene.layout.VBox
import javafx.stage.Stage
import java.io.IOException
import java.io.PrintWriter
import java.net.Socket

class ChatClient : Application() {
    private lateinit var serverOut: PrintWriter

    override fun start(primaryStage: Stage) {
        primaryStage.title = "Chat Cliente"

        val chatArea = TextArea()
        chatArea.isEditable = false

        val messageInput = TextField()
        messageInput.promptText = "Escribe un mensaje..."

        try {
            val socket = Socket("localhost", 12345)
            serverOut = PrintWriter(socket.getOutputStream(), true)

            val messageReceiver = Thread {
                try {
                    val serverIn = socket.getInputStream().bufferedReader()
                    var message: String?
                    while (true) {
                        message = serverIn.readLine()
                        if (message != null) {
                            Platform.runLater { chatArea.appendText("$message\n") }
                        }
                    }
                } catch (e: IOException) {
                    e.printStackTrace()
                }
            }

            messageReceiver.isDaemon = true
            messageReceiver.start()
        } catch (e: IOException) {
            e.printStackTrace()
        }

        messageInput.setOnAction {
            val message = messageInput.text
            if (message.isNotEmpty()) {
                serverOut.println(message)
                messageInput.clear()
            }
        }

        val vbox = VBox(10.0)
        vbox.children.addAll(chatArea, messageInput)
        val scene = Scene(vbox, 400.0, 400.0)
        primaryStage.scene = scene
        primaryStage.show()
    }
}

fun main() {
    launch(ChatClient::class.java)
}

import javafx.application.Application

import javafx.application.Application.launch

import javafx.application.Platform

import javafx.scene.Scene

import javafx.scene.control.TextArea

import javafx.scene.control.TextField

import javafx.scene.layout.VBox

import javafx.stage.Stage

import java.io.IOException

import java.io.PrintWriter

import java.net.Socket

class ChatClient : Application() {

private lateinit var serverOut: PrintWriter

override fun start(primaryStage: Stage) {

primaryStage.title = "Chat Cliente"

val chatArea = TextArea()

chatArea.isEditable = false

val messageInput = TextField()

messageInput.promptText = "Escribe un mensaje..."

try {

val socket = Socket("localhost", 12345)

serverOut = PrintWriter(socket.getOutputStream(), true)

val messageReceiver = Thread {

try {

val serverIn = socket.getInputStream().bufferedReader()

var message: String?

while (true) {

message = serverIn.readLine()

if (message != null) {

Platform.runLater { chatArea.appendText("$message\n") }

}

} catch (e: IOException) {

e.printStackTrace()

}

messageReceiver.isDaemon = true

messageReceiver.start()

} catch (e: IOException) {

e.printStackTrace()

}

messageInput.setOnAction {

val message = messageInput.text

if (message.isNotEmpty()) {

serverOut.println(message)

messageInput.clear()

}

val vbox = VBox(10.0)

vbox.children.addAll(chatArea, messageInput)

val scene = Scene(vbox, 400.0, 400.0)

primaryStage.scene = scene

primaryStage.show()

}

fun main() {

launch(ChatClient::class.java)

}

Desarrollar una aplicación de chat en kotlin, tanto la parte cliente (visual con JavaFX), como la parte servidor (no visual) (Red, Kotlin)

Servidor

Cliente

LIBRO DE POWERSHELL

LO ÚLTIMO

VÍDEOS