Scala equivalent of python echo server/client example?

Question

All the "server" example in scala use actors, reactors etc...

Can someone show me how to write a dead simple echo server and client, just like the following python example of Server and Client:

# A simple echo server  import socket   host = ''  port = 50000  backlog = 5  size = 1024  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  s.bind((host,port))  s.listen(backlog)  while 1:      client, address = s.accept()      data = client.recv(size)      if data:          client.send(data)      client.close() 

# A simple echo client  import socket   host = 'localhost'  port = 50000  size = 1024  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  s.connect((host,port))  s.send('Hello, world')  data = s.recv(size)  s.close()  print 'Received:', data 

Answer 1

You can do following within standard library:

// Simple server import java.net._ import java.io._ import scala.io._  val server = new ServerSocket(9999) while (true) {     val s = server.accept()     val in = new BufferedSource(s.getInputStream()).getLines()     val out = new PrintStream(s.getOutputStream())      out.println(in.next())     out.flush()     s.close() } 

// Simple client import java.net._ import java.io._ import scala.io._  val s = new Socket(InetAddress.getByName("localhost"), 9999) lazy val in = new BufferedSource(s.getInputStream()).getLines() val out = new PrintStream(s.getOutputStream())  out.println("Hello, world") out.flush() println("Received: " + in.next())  s.close() 

If you don't mind using extra libraries, you might like Finagle.