int main(void) {
struct message msg;
char* fifosrvbasename = "srvfifoqueue";
char fifosrvname[FIFO_NAME_BUF_SIZE];
char fifocntname[FIFO_NAME_BUF_SIZE];
int fdsrv, fdsrv1,
fdcnt,
bread,
bwrite;
printf("Server started...\n");
setbuf(stdout, NULL);
/* Creating server fifo queue */
make_srv_fifo_queue_name(fifosrvname, fifosrvbasename, FIFO_NAME_BUF_SIZE);
printf("Creating server fifo queue \'%s\'...", fifosrvname);
if ((mkfifo(fifosrvname, PERM_FILE) == -1) && (errno != EEXIST)) {
printf("FAIL!\nError: %s\n", strerror(errno));
return 0;
}
/* Opening fifo */
printf("OK\nOpening server fifo queue \'%s\' for reading...", fifosrvname);
fdsrv = open(fifosrvname, O_RDONLY | O_NONBLOCK);
fcntl(fdsrv, F_SETFL, fcntl(fdsrv, F_GETFL, 0) & ~O_NONBLOCK);
fdsrv1 = open(fifosrvname, O_WRONLY);
if (fdsrv == -1) {
printf("FAIL!\nError: \'%s\'\n", strerror(errno));
return 0;
}
printf("OK\n");
while (1) {
/* Reading from queue */
printf("Waiting for data...");
bread = read(fdsrv, &msg, sizeof (msg));
if (bread == -1) {
printf("FAIL!\nError: %s\n", strerror(errno));
break;
}
printf("OK\n");
printf("Message from client [%d]: %s\n", msg.pid, msg.data);
printf("Your responce: ");
stdin_readall(msg.data, MESSAGE_BUF_SIZE);
/* Creating client fifo name */
make_cnt_fifo_queue_name(fifocntname, msg.pid, FIFO_NAME_BUF_SIZE);
/* Opening client fifo for writing */
printf("Opening client fifo \'%s\' for writing...", fifocntname);
fdcnt = open(fifocntname, O_WRONLY);
if (fdcnt == -1) {
printf("FAIL!\nError: %s\n", strerror(errno));
break;
}
/* Sending responce */
printf("OK\nWritting responce to client [%ld]...", (long) msg.pid);
bwrite = write(fdcnt, &msg, sizeof (msg));
if (bwrite == -1) {
printf("FAIL!\nError: %s\n", strerror(errno));
break;
}
printf("OK\n");
close(fdcnt);
}
close(fdsrv1);
/* Cleaning up */
close(fdsrv);
unlink(fifosrvname);
return 0;
}
int main(void)
{
struct message msg;
char* fifosrvbasename = "srvfifoqueue";
char fifosrvname[FIFO_NAME_BUF_SIZE];
char fifocntname[FIFO_NAME_BUF_SIZE];
int fdsrv,
fdcnt,
bread,
bwrite,
fdcnt_w;
printf("Client [%ld] started...\n", (long)getpid());
setbuf(stdout, NULL);
msg.pid = getpid();
/* Creating client fifo name */
make_cnt_fifo_queue_name(fifocntname, msg.pid, FIFO_NAME_BUF_SIZE);
printf("Creating client fifo queue \'%s\'...", fifocntname);
if((mkfifo(fifocntname, PERM_FILE) == -1) && (errno != EEXIST))
{
printf("FAIL!\nError: %s\n", strerror(errno));
return 0;
}
/* Opening server fifo for writing */
make_srv_fifo_queue_name(fifosrvname, fifosrvbasename, FIFO_NAME_BUF_SIZE);
printf("OK\nOpening server fifo queue \'%s\' for writing...", fifosrvname);
fdsrv = open(fifosrvname, O_WRONLY);
if(fdsrv == -1)
{
printf("FAIL!\nError: %s\n", strerror(errno));
return 0;
}
printf("OK\n");
while(1)
{
/* Getting message */
printf("Send message: ");
if(stdin_readall(msg.data, MESSAGE_BUF_SIZE) == 0)
break;
/* Sending message to server */
printf("Writing message to server...");
bwrite = write(fdsrv, &msg, sizeof(msg));
if(bwrite == -1)
{
printf("FAIL!\nError: %s\n", strerror(errno));
break;
}
/* Opening client fifo for reading */
printf("OK\nOpening client fifo queue \'%s\' for reading...", fifocntname);
fdcnt = open(fifocntname, O_RDONLY|O_NONBLOCK);
if(fdcnt == -1)
{
printf("FAIL!\nError: %s\n", strerror(errno));
break;
}
//*********************************************************
//przywrócenie blokowania
int flags= fcntl(fdcnt,F_GETFL);
flags &= ~O_NONBLOCK;
fcntl(fdcnt,F_SETFL,flags);
//otworzenie do zapisu
fdcnt_w = open(fifocntname, O_WRONLY);
if(fdcnt_w == -1)
{
printf("FAIL!\nError: \'%s\'\n", strerror(errno));
return 0;
}
//*********************************************************
printf("OK\n");
/* Reading responce */
printf("Waiting for data...");
bread = read(fdcnt, &msg, sizeof(msg));
if(bread == -1)
{
printf("FAIL!\nError: %s\n", strerror(errno));
close(fdcnt);
break;
}
close(fdcnt);
printf("OK\nMessage from server: %s\n", msg.data);
}
/* Cleaning up */
close(fdsrv);
unlink(fifocntname);
return 0;
}
