simple udp client boost - c++

Question

I am trying to write a simple client to publish a UDP message to a server. My buffer is not being sent as a udp. When I try and send the message to netcat it does not appear.
#include <iostream>
#include <boost/array.hpp>
#include <boost/asio.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/thread.hpp>
int main(int argc, char *argv[])
{
boost::asio::io_service io_service;
boost::asio::ip::udp::endpoint endpoint_(boost::asio::ip::address::from_string("0.0.0.0"), 2399);
boost::asio::ip::udp::socket socket(io_service, endpoint_);
boost::asio::socket_base::broadcast option(true);
socket.set_option(option);
char* data = "hello";
socket.send_to(boost::asio::buffer(data, strlen(data)), endpoint_);
getchar();
return 0;
}

Answer 1

Binding the socket to an endpoint is a server function. You could notice this by the fact you may receive a "Bind error/Address already in use" error if something listens on that port already.
Instead use socket.open:
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#include <iostream>
#include <boost/asio.hpp>
int main()
{
using namespace boost::asio;
using ip::udp;
io_service io_service;
udp::socket socket(io_service);
socket.open(udp::v4());
socket.set_option(socket_base::broadcast(true));
const char* data = "hello";
udp::endpoint endpoint_(ip::address::from_string("0.0.0.0"), 2399);
socket.send_to(boost::asio::buffer(data, strlen(data)), endpoint_);
}