int main()
{
Tree *head = new Tree;
head->value = -32999;
head->left = NULL;
head->right = NULL;
head->prev = NULL;
char c = 0;
while (c != '0')
{
printf("\n 0 Exit\n 1 Add value to tree\n 2 Delete value from tree\n 3 Exist?\n 4 Print\n ");
scanf("%c", &c);
if (c == '\n')
scanf("%c", &c);
if (c == '1')
addValue(head);
if (c == '2')
delValue(head);
if (c == '3')
existence(head);
if (c == '4')
printEl(head->left);
}
delTree(head->left);
delete head;
return 0;
}
void create_child(int prev_socket_fd,struct sockaddr *client_address, request *client_req)
{
pid_t pid=fork();
if(pid<0)
err("Error in creating child");
else if(pid == 0)
{
close(prev_socket_fd);
int socket_fd,addr_len=sizeof(struct sockaddr);
struct sockaddr_in child_address;
socket_fd=create_socket();
fill_address(&child_address,0,NULL);
bind_socket(&child_address,socket_fd);
if (getsockname(socket_fd, (struct sockaddr *)&child_address, (socklen_t *)&addr_len) == -1)
err("Error in resolving child address");
printf("Child process created.Listening on port %d\n\n",ntohs(child_address.sin_port));
ack_data *ack=(ack_data *)malloc(sizeof(ack_data));
memset((void *)ack,0,sizeof(ack_data));
if(!existence(client_req->filename))
{
perror("File does not exists");
printf("File name is %s\n",client_req->filename );
file_data *fdata=(file_data *)malloc(sizeof(file_data));
fdata->data_block=-1;
ssize_t nbytes=sendto(socket_fd,fdata,sizeof(file_data),0,client_address,(socklen_t )addr_len);
exit(-1);
}
data_send(socket_fd,client_address,addr_len,client_req->filename);
close(socket_fd);
exit(0);
}
}