open_source / socket-cpp

#include <iostream>
#include <string>
#include "socket-cpp/unix_dgram_socket.h"

using namespace std;

// --------------------------------------------------------------------------

int main(int argc, char* argv[])
{
	osdev::components::socket-cpp::socket_initializer sockInit;

	string	cliAddr { "/tmp/undgramecho.sock" },
			svrAddr { "/tmp/undgramechosvr.sock" };

	osdev::components::socket-cpp::unix_dgram_socket sock;

	// A Unix-domain UDP client needs to bind to its own address
	// before it can send or receive packets

	if (!sock.bind(osdev::components::socket-cpp::unix_address(cliAddr))) {
		cerr << "Error connecting to client address at '" << cliAddr << "'"
			<< "\n\t" << sock.last_error_str() << endl;
		return 1;
	}

	// "Connect" to the server address. This is a convenience to set the
	// default 'send_to' address, as there is no real connection.

	if (!sock.connect(osdev::components::socket-cpp::unix_address(svrAddr))) {
		cerr << "Error connecting to server at '" << svrAddr << "'"
			<< "\n\t" << sock.last_error_str() << endl;
		return 1;
	}

	cout << "Created UDP socket at: " << sock.address() << endl;

	string s, sret;
	while (getline(cin, s) && !s.empty()) {
		if (sock.send(s) != ssize_t(s.length())) {
			cerr << "Error writing to the UDP socket: "
				<< sock.last_error_str() << endl;
			break;
		}

		sret.resize(s.length());
		ssize_t n = sock.recv(&sret[0], s.length());

		if (n != ssize_t(s.length())) {
			cerr << "Error reading from UDP socket: "
				<< sock.last_error_str() << endl;
			break;
		}

		cout << sret << endl;
	}

	return (!sock) ? 1 : 0;
}