간단한 브로드캐스팅 연결이 잘 안되네요...

#include <WinSock2.h>
#include <iostream>
#include <time.h>
 
#define SERVER_ADDR ""
#define SERVER_PORT 50000
 
using namespace std;
 
int main(){
	int Count = 0;
	WSADATA wsa;
	if(WSAStartup(MAKEWORD(2,2), &wsa) != 0){
		cout << "Winsock Error\n";
		return -1;
	}
 
	SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
	if(s == INVALID_SOCKET){
		cout << "sock() Error\n";
		WSACleanup();
		return -1;
	}
 
	SOCKADDR_IN serv;
	ZeroMemory(&serv, sizeof(serv));
	serv.sin_family = AF_INET;
	serv.sin_port = htons(SERVER_PORT);
	serv.sin_addr.s_addr = inet_addr(SERVER_ADDR);
 
	bind(s, (SOCKADDR *)&serv, sizeof(serv));
 
	SOCKADDR_IN peer;
	int addrlen;
	char buf[250];
	int len;
	int retval;
	BOOL optval = TRUE;
 
	setsockopt(s, SOL_SOCKET, SO_BROADCAST, (char *)optval, sizeof(optval));
 
	while(1){
		addrlen = sizeof(peer);
		retval = recvfrom(s, buf, 250, 0, (SOCKADDR *)&peer, &addrlen);
		buf[retval] = '\0';
		cout << "<- " << buf << endl;
 
	}
 
	closesocket(s);
	WSACleanup();
	return 0;
}

#include<WinSock2.h>
#include<iostream>
#include<time.h>
 
#define CLIENT_ADDR ""
#define CLIENT_PORT 50000
 
using namespace std;
 
int main(){
	WSADATA wsa;
	if(WSAStartup(MAKEWORD(2,2), &wsa) != 0){
		cout << "Winsock Error\n";
		return -1;
	}
 
	SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
	if(s == INVALID_SOCKET){
		cout << "sock() Error\n";
		WSACleanup();
		return -1;
	}
 
	SOCKADDR_IN clit;
	ZeroMemory(&clit, sizeof(clit));
	clit.sin_family = AF_INET;
	clit.sin_port = htons(CLIENT_PORT);
	clit.sin_addr.s_addr = inet_addr(CLIENT_ADDR);
 
	SOCKADDR_IN peer;
	int addrlen;
	char buf[250];
	int retval;
 
	while(1){
		cout << "-> ";
		if(fgets(buf, 251, stdin) == NULL)	break;
 
		addrlen = strlen(buf);
		if(buf[addrlen-1] == '\n')	buf[addrlen-1] = '\0';
		if(strlen(buf) == 0)	break;
 
		sendto(s, buf, 250, 0, (SOCKADDR *)&clit , sizeof(clit));		
	}
 
	closesocket(s);
	WSACleanup();
}