Enviar un mensaje TCP con Kotlin desde una aplicación en Android Studio a un servidor en Android Studio | Operating systems, scripting, PowerShell and security

package com.example.myapplication

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.ui.Modifier
import com.example.myapplication.ui.theme.MyApplicationTheme
import java.net.InetAddress
import java.net.Socket

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyApplicationTheme {
                Surface(
                    modifier = Modifier,
                    color = MaterialTheme.colorScheme.background
                ) {
                    Button(
                        onClick = {
                            enviar()
                        }
                    ) {
                        Text("Enviar mensaje")
                    }
                }
            }
        }
    }

    private fun enviar() {
        Thread {
            val host = "192.168.1.55"
            val puerto = 6000
            val mensaje = "Adios"

            try {
                val cliente = Socket(host, puerto)
                val outputStream = cliente.getOutputStream()
                outputStream.write(mensaje.toByteArray())
                outputStream.flush()

                cliente.close()
            } catch (e: Exception) {
                e.printStackTrace()
            }
        }.start()
    }
}

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package com.example.myapplication

import android.os.Bundle

import androidx.activity.ComponentActivity

import androidx.activity.compose.setContent

import androidx.compose.foundation.layout.fillMaxSize

import androidx.compose.material3.Button

import androidx.compose.material3.MaterialTheme

import androidx.compose.material3.Surface

import androidx.compose.material3.Text

import androidx.compose.ui.Modifier

import com.example.myapplication.ui.theme.MyApplicationTheme

import java.net.InetAddress

import java.net.Socket

class MainActivity : ComponentActivity() {

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContent {

MyApplicationTheme {

Surface(

modifier = Modifier,

color = MaterialTheme.colorScheme.background

) {

Button(

onClick = {

enviar()

}

) {

Text("Enviar mensaje")

}

private fun enviar() {

Thread {

val host = "192.168.1.55"

val puerto = 6000

val mensaje = "Adios"

try {

val cliente = Socket(host, puerto)

val outputStream = cliente.getOutputStream()

outputStream.write(mensaje.toByteArray())

outputStream.flush()

cliente.close()

} catch (e: Exception) {

e.printStackTrace()

}

}.start()

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name"
            android:theme="@style/Theme.MyApplication">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

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<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools">

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application

android:allowBackup="true"

android:dataExtractionRules="@xml/data_extraction_rules"

android:fullBackupContent="@xml/backup_rules"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/Theme.MyApplication"

tools:targetApi="31">

<activity

android:name=".MainActivity"

android:exported="true"

android:label="@string/app_name"

android:theme="@style/Theme.MyApplication">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

package com.example.myapplication

import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.launch
import java.io.BufferedReader
import java.io.InputStreamReader
import java.net.ServerSocket

class MainActivity : ComponentActivity() {
    private val port = 6000 // Puerto para la conexión

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            startServer()
        }
    }

    private fun startServer() {
        GlobalScope.launch(Dispatchers.IO) {
            try {
                val serverSocket = ServerSocket(port)

                while (true) {
                    val client = serverSocket.accept()
                    val inputStream = client.getInputStream()
                    val bufferedReader = BufferedReader(InputStreamReader(inputStream))

                    val message = bufferedReader.readLine()
                    showMessage(message)

                    bufferedReader.close()
                    client.close()
                }
            } catch (e: Exception) {
                e.printStackTrace()
            }
        }
    }

    private fun showMessage(message: String?) {
        runOnUiThread {
            Toast.makeText(this, "Mensaje recibido: $message", Toast.LENGTH_SHORT).show()
        }
    }
}

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package com.example.myapplication

import android.os.Bundle

import android.widget.Toast

import androidx.activity.ComponentActivity

import androidx.activity.compose.setContent

import kotlinx.coroutines.Dispatchers

import kotlinx.coroutines.GlobalScope

import kotlinx.coroutines.launch

import java.io.BufferedReader

import java.io.InputStreamReader

import java.net.ServerSocket

class MainActivity : ComponentActivity() {

private val port = 6000 // Puerto para la conexión

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

setContent {

startServer()

}

private fun startServer() {

GlobalScope.launch(Dispatchers.IO) {

try {

val serverSocket = ServerSocket(port)

while (true) {

val client = serverSocket.accept()

val inputStream = client.getInputStream()

val bufferedReader = BufferedReader(InputStreamReader(inputStream))

val message = bufferedReader.readLine()

showMessage(message)

bufferedReader.close()

client.close()

}

} catch (e: Exception) {

e.printStackTrace()

}

private fun showMessage(message: String?) {

runOnUiThread {

Toast.makeText(this, "Mensaje recibido: $message", Toast.LENGTH_SHORT).show()

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name"
            android:theme="@style/Theme.MyApplication">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

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<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools">

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application

android:allowBackup="true"

android:dataExtractionRules="@xml/data_extraction_rules"

android:fullBackupContent="@xml/backup_rules"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/Theme.MyApplication"

tools:targetApi="31">

<activity

android:name=".MainActivity"

android:exported="true"

android:label="@string/app_name"

android:theme="@style/Theme.MyApplication">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Enviar un mensaje TCP con Kotlin desde una aplicación en Android Studio a un servidor en Android Studio (Lo mejor, Kotlin, Android)

Cliente

MainActivity.kt

AndroidManifest.xml

Servidor

MainActivity.kt

AndroidManifest.xml

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