open_source / socket-cpp

  #include <iostream>
  #include <thread>

  #include "socket-cpp/tcp_acceptor.h"
  #include "socket-cpp/version.h"

  
  using namespace std;
  
  // --------------------------------------------------------------------------
  // The thread function. This is run in a separate thread for each socket.
  // Ownership of the socket object is transferred to the thread, so when this
  // function exits, the socket is automatically closed.
  

  void run_echo(osdev::components::socket-cpp::tcp_socket sock)

  {
  	ssize_t n;
  	char buf[512];
  
  	while ((n = sock.read(buf, sizeof(buf))) > 0)
  		sock.write_n(buf, n);
  
  	cout << "Connection closed from " << sock.peer_address() << endl;
  }
  
  // --------------------------------------------------------------------------
  // The main thread runs the TCP port acceptor. Each time a connection is
  // made, a new thread is spawned to handle it, leaving this main thread to
  // immediately wait for the next connection.
  
  int main(int argc, char* argv[])
  {
  	cout << "Sample TCP echo server for 'sockpp' "

  		<< osdev::components::socket-cpp::SOCKPP_VERSION << '\n' << endl;

  
  	in_port_t port = (argc > 1) ? atoi(argv[1]) : 12345;
  

  	osdev::components::socket-cpp::socket_initializer sockInit;

  	osdev::components::socket-cpp::tcp_acceptor acc(port);

  
  	if (!acc) {
  		cerr << "Error creating the acceptor: " << acc.last_error_str() << endl;
  		return 1;
  	}
      //cout << "Acceptor bound to address: " << acc.address() << endl;
  	cout << "Awaiting connections on port " << port << "..." << endl;
  
  	while (true) {

  		osdev::components::socket-cpp::inet_address peer;

  
  		// Accept a new client connection

  		osdev::components::socket-cpp::tcp_socket sock = acc.accept(&peer);

  		cout << "Received a connection request from " << peer << endl;
  
  		if (!sock) {
  			cerr << "Error accepting incoming connection: " 
  				<< acc.last_error_str() << endl;
  		}
  		else {
  			// Create a thread and transfer the new stream to it.
  			thread thr(run_echo, std::move(sock));
  			thr.detach();
  		}
  	}
  
  	return 0;
  }