A Quick Haxe Client / Server Socket Example

_README.md

A quick / simple example socket server and client

Requires Haxe and the cpp haxelib

Compile the server with:

haxe -cpp server -main Server

Compile the client with:

haxe -cpp client -main Client

Start the server:

./server/Server

In another terminal, run the client, e.g. targetting the localhost:

./client/Client 127.0.0.1

Observe the message passed from Server to Client

client_server.mp4

Related reading:

• https://yal.cc/haxeneko-server-client-communication-example-chat/
• https://stackoverflow.com/a/32614102/1026023

Client.hx

import sys.net.Host;
import sys.net.Socket;

class Client
{
  public function new()
  {
    var args = Sys.args();
    if (args.length==0) {
      trace('Usage: Client <server ip / hostname>');
      Sys.exit(1);
      return;
    }

    var server = args[0];
    trace('Connecting to ${ server }:8112');
    var client = new Socket();

    try {
      client.connect(new Host(server), 8112);
    } catch (e:Dynamic) {
      trace('Failed to connect. Goodbye.');
      Sys.exit(2);
    }

    var len = client.input.readInt32();
    var val = client.input.readString(len);

    trace('Server said: $val');

    client.close();
    trace('Closed socket. Goodbye!');
  }
  public static function main() new Client();
}

Server.hx

import sys.net.Socket;

class Server
{
  public function new()
  {
    trace('Listening on 0.0.0.0:8112');
    var listener = new Socket();
    listener.bind(new sys.net.Host("0.0.0.0"), 8112);
    listener.listen(8);

    while (true) {
      var socket : Socket = listener.accept(); // This line waits...

      var msg = "Hello world!";
      trace('Got connection, writing: $msg');
      socket.output.writeInt32(msg.length);
      socket.output.writeString(msg);
      socket.close();
      trace("Closed, will wait for next connection...");
    }
  }
  public static function main() new Server();
}