CPP Client Server Send Failed - c++

Question

the program main propose:
reading words from txt file and send server .
i got this eroor:
socket send failed : Connection reset by peer
// rc = send (fd, word, length, 0);
I will give you client.cpp if you want i give server.cpp
/*
g++ client.cpp -Wall -g3 -o ozgurtcpclnt
*/
using namespace std;
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "first.h"
#include <vector>
#define TCP_SERVER_PORT 54321
#define BUFFER_LENGTH 1024
const char * message = "selam dostum!";
int main () {
char word[IO_BUF_LENGTH + 1] = { 0 };
int length = 0;
FILE * fp;
fp = fopen("combinedText.txt", "r");
if (fp == NULL) {
perror("fopen failed");
return 0;
}
char buffer [BUFFER_LENGTH + 1] = {0};
int fd;
int rc;
struct sockaddr_in s_addr;
memset (&s_addr, 0, sizeof (s_addr));
fd = socket (AF_INET, SOCK_STREAM, 0);
if (fd < 0) {
printf ("socket failed : %s\n", strerror (errno));
exit (1);
}
s_addr.sin_family = AF_INET;
s_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
s_addr.sin_port = htons (TCP_SERVER_PORT);
rc = connect (fd, (struct sockaddr *)&s_addr, sizeof (s_addr));
if (rc < 0) {
printf ("connect failed : %s\n", strerror (errno));
exit (1);
}
/*length = strlen(message);
rc = send (fd, message, length, 0);*/
while (fscanf(fp, MAX_WORD_SCANF, word) != EOF) {
length = strlen(word);
if (length > 1) {
rc = send (fd, word, length, 0);
if (rc != length) {
printf (" socket send failed : %s\n", strerror (errno));
exit (1);
}
}
}
fclose(fp);
length = strlen(word);
rc = recv (fd, word,length, 0);
if (rc < 0) {
printf ("recv failed : %s\n", strerror (errno));
exit (1);
}
printf ("Server said : %s\n", word);
return 0;
}