dropsendto

#include <signal.h>
#include <sys/wait.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <netdb.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include "dropsendto.h"

ssize_t dropsendto (int __fd, const void *__buf, size_t __n, int __flags, __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len, int *global_count, int *lossnum_count, int lossnum, int loss_mod){

    if(lossnum == 0){
        int val2 = sendto( __fd, __buf, __n, __flags, __addr, __addr_len);
        //printf("sent %d\t", *global_count);
        (*global_count)++;
        return val2;
    }

    int t = (*global_count);
    if ((t%loss_mod) != 0){
        int val = sendto( __fd, __buf, __n, __flags, __addr, __addr_len);
        printf("sent %d\t", t - 1);
        (*global_count)++;
        return val;
    }
    else{
        if((*lossnum_count) > 0){
            (*lossnum_count)--;
            if ((*lossnum_count) == 0){
                (*global_count) = 1;
                (*lossnum_count) = lossnum;
                return 1;
            }
            (*global_count) = loss_mod;
            return 1;
        }
    }
}