var net = require('net');

var server = net.createServer(function (socket) {
  socket.write('Echo server\r\n');
  socket.pipe(socket);
});

server.listen(1337, '127.0.0.1');

//
// async_tcp_echo_server.cpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <cstdlib>
#include <iostream>
#include <boost/bind.hpp>
#include <boost/asio.hpp>

using boost::asio::ip::tcp;

class session
{
public:
  session(boost::asio::io_service& io_service)
    : socket_(io_service)
  {
  }

  tcp::socket& socket()
  {
    return socket_;
  }

  void start()
  {
    socket_.async_read_some(boost::asio::buffer(data_, max_length),
        boost::bind(&session::handle_read, this,
          boost::asio::placeholders::error,
          boost::asio::placeholders::bytes_transferred));
  }

private:
  void handle_read(const boost::system::error_code& error,
      size_t bytes_transferred)
  {
    if (!error)
    {
      boost::asio::async_write(socket_,
          boost::asio::buffer(data_, bytes_transferred),
          boost::bind(&session::handle_write, this,
            boost::asio::placeholders::error));
    }
    else
    {
      delete this;
    }
  }

  void handle_write(const boost::system::error_code& error)
  {
    if (!error)
    {
      socket_.async_read_some(boost::asio::buffer(data_, max_length),
          boost::bind(&session::handle_read, this,
            boost::asio::placeholders::error,
            boost::asio::placeholders::bytes_transferred));
    }
    else
    {
      delete this;
    }
  }

  tcp::socket socket_;
  enum { max_length = 1024 };
  char data_[max_length];
};

class server
{
public:
  server(boost::asio::io_service& io_service, short port)
    : io_service_(io_service),
      acceptor_(io_service, tcp::endpoint(tcp::v4(), port))
  {
    start_accept();
  }

private:
  void start_accept()
  {
    session* new_session = new session(io_service_);
    acceptor_.async_accept(new_session->socket(),
        boost::bind(&server::handle_accept, this, new_session,
          boost::asio::placeholders::error));
  }

  void handle_accept(session* new_session,
      const boost::system::error_code& error)
  {
    if (!error)
    {
      new_session->start();
    }
    else
    {
      delete new_session;
    }

    start_accept();
  }

  boost::asio::io_service& io_service_;
  tcp::acceptor acceptor_;
};

int main(int argc, char* argv[])
{
  try
  {
    if (argc != 2)
    {
      std::cerr << "Usage: async_tcp_echo_server <port>\n";
      return 1;
    }

    boost::asio::io_service io_service;

    using namespace std; // For atoi.
    server s(io_service, atoi(argv[1]));

    io_service.run();
  }
  catch (std::exception& e)
  {
    std::cerr << "Exception: " << e.what() << "\n";
  }

  return 0;
}

#include <boost/network/protocol/http/server.hpp>

struct hello_world;
typedef boost::network::http::server<hello_world> server;

struct hello_world {
    void operator() (server::request const &request, server::response &response) {
        std::string ip = source(request);
        response = server::response::stock_reply(
            server::response::ok, std::string("Hello, ") + ip + "!");
    }
};

int main(int argc, char * argv[]) {
    hello_world handler;
    server server_(argv[1], argv[2], handler);
    server_.run();
}

for ( size_t i=0;i<Arr.Size; i++ )
  Делать что-то();

First, EASTL provides a set of containers, iterators, and algorithms that are identical in interface and behavior to std STL versions with one exception: allocators.

Boost.Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.

H>var net = require('net');

H>var server = net.createServer(function (socket) {
H>  socket.write('Echo server\r\n');
H>  socket.pipe(socket);
H>});

H>server.listen(1337, '127.0.0.1');
H>

EchoServer echoServer(port);

J>#include <boost/network/protocol/http/server.hpp>

J>struct hello_world;
J>typedef boost::network::http::server<hello_world> server;

J>struct hello_world {
J>    void operator() (server::request const &request, server::response &response) {
J>        std::string ip = source(request);
J>        response = server::response::stock_reply(
J>            server::response::ok, std::string("Hello, ") + ip + "!");
J>    }
J>};

J>int main(int argc, char * argv[]) {
J>    hello_world handler;
J>    server server_(argv[1], argv[2], handler);
J>    server_.run();
J>}
J>

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

#include "boost/function.hpp"

class timer
{
public:
  template< typename F >
  void subscribe( F fn ) { m_callback = fn; }

private:
  void tick() {
    ....
    m_callback( ++m_tick_number );
  } 

private:
  typedef boost::function<void(unsigned int /*tick*/)> callback_fn_t;
  callback_fn_t m_callback;
  unsigned int m_tick_number;
}

class C {
  void foo( int tick, int arg1, int& arg2 ) {}
private:
  timer m_timer;
};

...
int c;
m_timer.subscribe( boost::bind( &C::foo, this, _1, 10, boost::ref(c)) );

// The client sends an HTTP request to the server, and the output is printed to the console.
cout << body(client().get(client::request("http://www.boost.org/")));

#include <tcpip.hc>
#include <prog.hc>

typedef struct SESSION {
  YOYO_TCPSOK *sok;
  byte_t bf[128];
} SESSION;

void SESSION_Destruct(SESSION *sst) {
  __Unrefe(sst->sok);
  __Destruct(sst);
}

int Cbk_Recv(SESSION *sst, int status, int count);
int Cbk_Send(SESSION *sst, int status) {
  if ( !ASIO_ST_SUCCEEDED(status) ) return 0;
  return Tcp_Asio_Recv(sst->sok,sst->bf,sizeof(sst->bf),1,sst,Cbk_Recv);
}

int Cbk_Recv(SESSION *sst, int status, int count) {
  if ( !ASIO_ST_SUCCEEDED(status) ) return 0;
  if ( !strncmp_I(sst->bf,"exit",Yo_Minu(count,4)) ) exit(0);
  return Tcp_Asio_Send(sst->sok,sst->bf,count,sst,Cbk_Send);
}
  
int Cbk_Accept(void *srv, int status, YOYO_TCPSOK *sok) {
  static char echo[] = "Echo server\r\n";
  SESSION *sst;
  if ( !ASIO_ST_SUCCEEDED(status) ) return 0;
  Tcp_Asio_Accept(srv,srv,Cbk_Accept);
  sst = __Object_Dtor(sizeof(SESSION),SESSION_Destruct);
  sst->sok = __Refe(sok);
  return Tcp_Asio_Send(sok,echo,sizeof(echo)-1,sst,Cbk_Send);
}

int main(int argc, char **argv) {
  YOYO_TCPSOK *srv;
  Prog_Init(argc,argv,"p:|port:,h|host:",0);
  srv = Tcp_Listen(TCPSOK_ASYNC,Prog_First_Opt("h","127.0.0.1"),Prog_First_Opt_Int("p",1337),0);
  Tcp_Asio_Accept(srv,srv,Cbk_Accept);
  while( Asio_Perform_IO(10,0) );
}