dlib C++ Library - sockets_ex.cpp

// The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
/*
 This is an example illustrating the use of the sockets and
 server components from the dlib C++ Library.
 This is a simple echo server. It listens on port 1234 for incoming
 connections and just echos back any data it receives. 
*/
#include <dlib/sockets.h>
#include <dlib/server.h>
#include <iostream>
using namespace dlib;
using namespace std;
class serv : public server
{
 void on_connect (
 connection& con
 )
 {
 char ch;
 while (con.read(&ch,1) > 0)
 {
 // we are just reading one char at a time and writing it back
 // to the connection. If there is some problem writing the char
 // then we quit the loop. 
 if (con.write(&ch,1) != 1)
 break;
 }
 }
};
int main()
{
 try
 {
 serv our_server;
 // set up the server object we have made
 our_server.set_listening_port(1234);
 // Tell the server to begin accepting connections.
 our_server.start_async();
 cout << "Press enter to end this program" << endl;
 cin.get();
 }
 catch (exception& e)
 {
 cout << e.what() << endl;
 }
}