Не могу разобраться с send и recv Winsock

send(s,"Hi/",sizeof("Hi/"),0);
send(s,"from/",sizeof("from/"),0);
send(s,"client/",sizeof("client/"),0);

for(int k=o;k<=2;k++){
for(int i=0;i<=3072;i++){
recv(client_sock, &buf[i], sizeof(buf[i]), 0);
if(buf[i]=='/'){
buf[i]=NULL;
break;}}
cout<<buf<<endl;}

send(s,"Hi",strlen("Hi")+1,0);
send(s,"from",strlen("from")+1,0);
send(s,"client",strlen("client")+1,0);

for(int k=0;k<=2;k++)
{
    recv(client_sock, buf, BUFFER_SIZE, 0);
    cout<<buf<<endl;
}

#include "stdafx.h"
#include <winsock2.h>
#include <Windows.h>
#include <process.h>
#include <iostream>
#pragma comment(lib, "Wsock32.lib")
#define PORT 3135
using namespace std;
 
SOCKET client_sock;
 
char buf[1024]; 
 
void main() 
{ 
WSADATA wsaData;
WSAStartup(0x202, &wsaData);
SOCKET s = socket(AF_INET, SOCK_STREAM, 0);
sockaddr_in serv_addr;
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family=AF_INET;
serv_addr.sin_port=htons(PORT);
serv_addr.sin_addr.s_addr=0;
bind(s,(sockaddr*)&serv_addr,sizeof(serv_addr));
listen(s, SOMAXCONN);
 
sockaddr_in client_addr;
int size_client_addr=sizeof(client_addr);
client_sock=accept(s, (sockaddr*)&client_addr, &size_client_addr);
 
for(int i=0;i<=1024;i++){
recv(client_sock, &buf[i], 1, 0);
if(buf[i]=='/'){
buf[i]=NULL;}}
cout<<buf<<endl;
 
for(int i=0;i<=1024;i++){
recv(client_sock, &buf[i], 1, 0);
if(buf[i]=='/'){
buf[i]=NULL;}}
cout<<buf<<endl;
 
shutdown(client_sock,20);
closesocket(client_sock);
shutdown(s,20);
closesocket(s);
WSACleanup();
}

#include "stdafx.h"
#include <winsock2.h>
#include <Windows.h>
#include <process.h>
#include <iostream>
#pragma comment(lib, "Wsock32.lib")
#define PORT 3135
#define IP "127.0.0.1"
using namespace std;
 
SOCKET s;
sockaddr_in serv_addr;
 
char buf[1024]; 
 
void main() 
{ 
WSADATA wsaData;
WSAStartup(0x202, &wsaData);
s=socket(AF_INET, SOCK_STREAM, 0);
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family=AF_INET;
serv_addr.sin_port=htons(PORT);
serv_addr.sin_addr.S_un.S_addr=inet_addr(IP);
connect(s, (sockaddr*)&serv_addr, sizeof(serv_addr));
 
send(s, "Hi/", sizeof("Hi/"), 0);
Sleep(100);
send(s, "i'm client/", sizeof("i'm client/"), 0);
 
shutdown(s,20);
closesocket(s);
WSACleanup();
}