Developing a client and server program

We have already had the network wrapper code simplify our programming process in developing a network application by using the Boost.Asio library. Now, let us create a client and server program by using our wrapper code.

Creating a simple echo server

We are going to create a server program that will echo out all traffic it retrieves from the client. In this case, we will use the telnet as the client, as we've done previously. The file has to be saved as echoserver.cpp, and the content will look like the following:

/* echoserver.cpp */
#include "wrapper.h"
#include <conio.h>
#include <boost/thread/mutex.hpp>

boost::mutex global_stream_lock;

class MyConnection : public Connection {
private:
  void OnAccept(const std::string &host, uint16_t port) {
    global_stream_lock.lock();
    std::cout << "[OnAccept] " << host << ":" << port << "\n";
    global_stream_lock.unlock();

    Recv();
  }

  void OnConnect...