Servidor HTTP simple en Kotlin que maneja solicitudes GET | Operating systems, scripting, PowerShell and security

Es importante tener el código html que se solicite en la ruta correcta.

import java.net.ServerSocket
import java.net.Socket
import java.io.*

class HttpRequest(private val clientConn: Socket) {
    fun process() {
        clientConn.getInputStream().bufferedReader().use { reader ->
            clientConn.getOutputStream().buffered().use { output ->
                val request = reader.readLine().trim()
                println(request)
                val tokens = request.split(" ")
                
                if (tokens[0] == "GET") {
                    val fileName = tokens[1]
                    var fileExists = true
                    val fileInputStream = try {
                        FileInputStream(fileName)
                    } catch (e: Exception) {
                        fileExists = false
                        null
                    }
                    
                    val serverLine = "Simple HTTP Server\n"
                    val statusLine: String
                    val contentTypeLine = "Content-type: text/html\n"
                    val contentBody: String?
                    val contentLengthLine: String
                    
                    if (fileExists) {
                        statusLine = "HTTP/1.0 200 OK\n"
                        contentLengthLine = "Content-Length: ${fileInputStream!!.available()}\n"
                        output.write(statusLine.toByteArray())
                        output.write(serverLine.toByteArray())
                        output.write(contentTypeLine.toByteArray())
                        output.write(contentLengthLine.toByteArray())
                        
                        fileInputStream.use { fis ->
                            fis.copyTo(output)
                        }
                    } else {
                        statusLine = "HTTP/1.0 404 Not Found\n"
                        contentBody = "<HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY>404 Not Found</BODY></HTML>"
                        contentLengthLine = "Content-Length: ${contentBody.length}\n"
                        
                        output.write(statusLine.toByteArray())
                        output.write(serverLine.toByteArray())
                        output.write(contentTypeLine.toByteArray())
                        output.write(contentLengthLine.toByteArray())
                        output.write(contentBody.toByteArray())
                    }
                }
            }
        }
        clientConn.close()
    }
}

class HttpServer {
    companion object {
        @JvmStatic
        fun main(args: Array<String>) {
            ServerSocket(5217).use { serverSocket ->
                while (true) {
                    val clientSocket = serverSocket.accept()
                    val request = HttpRequest(clientSocket)
                    request.process()
                }
            }
        }
    }
}

import java.net.ServerSocket

import java.net.Socket

import java.io.*

class HttpRequest(private val clientConn: Socket) {

fun process() {

clientConn.getInputStream().bufferedReader().use { reader ->

clientConn.getOutputStream().buffered().use { output ->

val request = reader.readLine().trim()

println(request)

val tokens = request.split(" ")

if (tokens[0] == "GET") {

val fileName = tokens[1]

var fileExists = true

val fileInputStream = try {

FileInputStream(fileName)

} catch (e: Exception) {

fileExists = false

null

}

val serverLine = "Simple HTTP Server\n"

val statusLine: String

val contentTypeLine = "Content-type: text/html\n"

val contentBody: String?

val contentLengthLine: String

if (fileExists) {

statusLine = "HTTP/1.0 200 OK\n"

contentLengthLine = "Content-Length: ${fileInputStream!!.available()}\n"

output.write(statusLine.toByteArray())

output.write(serverLine.toByteArray())

output.write(contentTypeLine.toByteArray())

output.write(contentLengthLine.toByteArray())

fileInputStream.use { fis ->

fis.copyTo(output)

}

} else {

statusLine = "HTTP/1.0 404 Not Found\n"

contentBody = "<HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY>404 Not Found</BODY></HTML>"

contentLengthLine = "Content-Length: ${contentBody.length}\n"

output.write(statusLine.toByteArray())

output.write(serverLine.toByteArray())

output.write(contentTypeLine.toByteArray())

output.write(contentLengthLine.toByteArray())

output.write(contentBody.toByteArray())

}

clientConn.close()

}

class HttpServer {

companion object {

@JvmStatic

fun main(args: Array<String>) {

ServerSocket(5217).use { serverSocket ->

while (true) {

val clientSocket = serverSocket.accept()

val request = HttpRequest(clientSocket)

request.process()

}

Publicado el día 25 de abril de 2020

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Kotlin, Servidores, Web

Servidor HTTP simple en Kotlin que maneja solicitudes GET (Web, Servidores, Kotlin)

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