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#ifndef COMMON_H
#define COMMON_H
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>
/************************************************************
All "messages" sent between server and clients in the
distributed tic-tac-toe system are in the format defined
by struct tttmsg. The structure of the message is determined
by the type field:
type=A WHO no other fields used
type=B HANDLE data is the string handle for ttt
sending this message
type=C MATCH data is string handle of opponent;
board[0] is 'X' or 'O' to denote
character this ttt is using
type=D WHATMOVE board[] contains X/O/space chars
to denote current state
type=E MOVE res (ascii) indicates square into
which client is moving
type=F RESULT board[] contains X/O/space chars
to denote current state;
res = W -> you win
L -> you lose
D -> draw
************************************************************/
#define WHO 'A'
#define HANDLE 'B'
#define MATCH 'C'
#define WHATMOVE 'D'
#define MOVE 'E'
#define RESULT 'F'
#define RESIGNED 'R'
#define ABORT '*'
struct tttmsg{
char type; /* Message type */
char board[9]; /* X/O */
char data[32]; /* null-terminated string */
char res; /* integer data */
};
#define SFILE "./serverloc"
void putmsg(int, struct tttmsg *);
void getmsg(int, struct tttmsg *);
void protocol_error(char, struct tttmsg *);
void dumpmsg(struct tttmsg *);
void init_board();
void dump_board(FILE *, char *);
int check_board(int);
#endif
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