You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#ifndef EASYSOCK_H_
|
|
#define EASYSOCK_H_
|
|
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
#include <arpa/inet.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
|
|
|
|
/* 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.*/
|
|
|
|
int 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 exits with error code -2 if the network parameter contained neither '4'
|
|
nor '6'. */
|
|
|
|
void 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 exits with error code '-3'.*/
|
|
|
|
int 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.
|
|
|
|
It prints the error returned by 'connect' if something went wrong, and exits with error code '-3'.*/
|
|
|
|
int create_remote (int network,char transport,char* address,int port);
|
|
|
|
|
|
#endif
|