윈속 : echo 서버 프로그램

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#include <winsock.h>  
#include <stdio.h>  
  
#define MAX_PACKETLEN 512  
#define PORT 5552  
  
int main()  
{  
    WSADATA wsaData;  
    int status;  
    int SockLen;  
    int Readn,Writen;  
    SOCKET EndpointSocket, ClientSocket;  
    struct sockaddr_in SockInfo, ClientSockInfo;  
    char ReadBuffer[MAX_PACKETLEN];  
  
  
    if(WSAStartup(MAKEWORD(2,2),&wsaData)!= 0)  
    {  
        printf("error\r\n");  
        return 0;  
    }  
  
    EndpointSocket = socket( AF_INET, SOCK_STREAM, 0 );  
    if( EndpointSocket == INVALID_SOCKET )  
        return 1;  
  
    printf("Success socket create\r\n");  
    ZeroMemory(&SockInfo, sizeof( struct sockaddr_in ));  
  
    SockInfo.sin_family = AF_INET;  
 
 
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