#ifndef LLCOMM_H__
#define LLCOMM_H__

#include <netinet/in.h>

struct Ll_comm_config {
  /// for client: host name or IP to connact to; 
  /// for server: doesn't matter
	char host[50];
  /// port number to bind to (server) or to connect to (client)
	int port;
  /// to act as server or as client
	bool server;
};

class Ll_comm {
public:
  /// initialize low-level communication
	Ll_comm(Ll_comm_config const& cfg);
	~Ll_comm();
  /// send an unreliable packet of length 'count'
	void send_pack(void const* buf, int count);
  /// receive in 'buf' a pachet of length at most 'count'
  /// returns: the length of the packet, or -1 if no packet arrives
  /// in 'timeout' miliseconds
	int recv_pack(void* buf, int count, int timeout);
private:
	int f_sd;
	struct sockaddr_in f_adr;
};

#endif