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#ifndef _TEKCOS_H
#define _TEKCOS_H
#if defined(_WIN32)
#include <WS2tcpip.h>
#include <winsock.h>
#else
#include <sys/socket.h>
#include <errno.h>
#include <fcntl.h>
#include <netinet/in.h>
#endif
#define TK_VERSION "0.1.0"
typedef unsigned int uint32;
typedef unsigned short uint16;
#ifdef _WIN32
// neccessary for windows
int tk_init();
#endif
// Under AF_INET domain, we use 32bit host + 16bit port to
// locate a proccess.
typedef struct
{
uint32 host; // 32bit ip
uint16 port; // 16 bit port
} tk_IPaddress;
uint32 tk_strtohl(const char* str); // string to host long(32 bits)
const char* tk_hltostr(uint32 ip); // host long to string
#define tk_htons htons // host to network short(16 bits)
#define tk_ntohl ntohl // network to host long(32bits)
/*
* TCP socket
* type = SOCK_STREAM
* protocol = IPPROTO_TCP
*/
#ifdef __linux__
typedef unsigned int SOCKET;
#endif
// TCP socket structrue.
typedef struct
{
SOCKET id; // socket id
int type; // socket type
tk_IPaddress remote; // remote ip
tk_IPaddress local; // local ip
} tk_TCPsocket;
// create a tcp socket. if ip.host is INADDR_NONE or
// INADDR_ANY, creeate a listenning server socket,
// otherwise, connect to a remote server with given
// ip address.
tk_TCPsocket* tk_tcp_open(tk_IPaddress ip);
int tk_tcp_close(tk_TCPsocket* sk);
int tk_tcp_send(tk_TCPsocket* client, const void* buffer, int bsize, int* len);
int tk_tcp_recv(tk_TCPsocket* client, char* buffer, int bsize, int* len);
tk_TCPsocket* tk_tcp_accept(tk_TCPsocket* server);
int tk_tcp_nonblocking(tk_TCPsocket* sk);
int tk_tcp_blocking(tk_TCPsocket* sk);
/*
* UDP socket
* type = SOCK_DGRAM
* protocol = IPPTOTO_UDP
*/
// UDP socket structure.
typedef struct
{
SOCKET id; // socket id
} tk_UDPsocket;
typedef struct
{
tk_IPaddress ip; // recvfrom or sendto ip addreass
int len; // length of data
char* data; // data
}tk_UDPpack;
tk_UDPsocket* tk_udp_open(uint16 portnumber);
int tk_udp_close(tk_UDPsocket* sk);
int tk_udp_sendto(tk_UDPsocket* sk, tk_UDPpack* pack);
int tk_udp_recvfrom(tk_UDPsocket* sk, tk_UDPpack* pack);
int tk_freepack(tk_UDPpack* pack);
// Get error message if some errors occured.
const char* tk_errmsg();
#endif
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