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92 lines
2.8 KiB
C++

#ifndef EASYSOCK_HPP_
#define EASYSOCK_HPP_
#ifdef _WIN_32
#include <winsock2.h>
#include <Ws2tcpip.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <arpa/inet.h>
#endif
#include <cstring>
#include <cstdlib>
#include <cstdio>
#include <cerrno>
#ifndef _WIN_32
typedef int SOCKET;
#endif
/* This function takes:
a layer 3 - network layer - integer, which must be '4' for IPv4
and 6 for IPv6; and
a layer 4 - transport layer - character, which must be 'T' for
TCP or 'U' for UDP.
It returns the created socket, or -1 if the socket creation failed.*/
SOCKET create_socket(int network, char transport);
/* This function fills in the sockaddr struct 'dest' based on the given information.
'network' is an integer that contains '4' for IPv4 or '6' for IPv6;
'address' is the address that is filled into the struct;
port is self-explanatory;
and dest is a pointer to the sockaddr struct that will be filled in.
The function returns with -202 if the network parameter contained neither '4'
nor '6'. */
SOCKET create_addr(int network, char* address, int port,struct sockaddr* dest);
/* This function utilizes the above two functions; it creates the socket and
_binds_ the addresses. It is used for local sockets (server sockets). Parameters are
same as above.
It prints the error returned by 'bind' if something went wrong, and returns ( -1 * errno ).*/
SOCKET create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct);
/* This function utilizes the same functions as 'create_local' but _connects_ to the
requested address. It is used for remote sockets (client sockets). The paramters are same
as above. This function needs an empty 'sockaddr *' structure passed to it, which it will fill.
If something goes wrong, this function returns with ( -1 * errno ). */
SOCKET create_remote (int network,char transport,char* address,int port,struct sockaddr* remote_addr_struct);
/* check_ip_ver - This function checks if the given string is an IPv4 address (returns 4),
IPv6 address (returns 6) or neither (returns -1). */
int check_ip_ver(const char* address);
/* int_to_inet - Takes an int value (4 for IPv4, 6 for IPv6) and returns AF_INET or
AF_INET6 respectively. */
int int_to_inet(int network);
/* char_to_socktype - Takes a character that represents a transport-layer protocol
(currently only supports 'T' for TCP or 'U' for UDP - it returns -250 if
the given characters is neither of these) and return the appropriate SOCKTYPE value. */
int char_to_socktype(char transport);
/* inet_to_int - Takes an int value that corresponds to AF_INET or AF_INET6,
and returns the appropriate int value. */
int inet_to_int(int af_type);
/* sockQuit - Only for windows - Cleans up the socket */
int sock_quit(void);
/* sock_close - Closes the given socket */
int sock_close(SOCKET);
#endif