소켓 기본 틀 #2

[[[   서버   ]]]

#include <iostream>
#include <winsock2.h>
using namespace std;

#define PACKET_SIZE 1024

int main(){
	WSADATA wsa;
	if(WSAStartup(MAKEWORD(2,2), &wsa)!=0){
		cout << "WSA error";
		return 0;
	}

	SOCKET skt;
	skt = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
	if(skt==INVALID_SOCKET){
		cout << "socket error";
		closesocket(skt);
		WSACleanup();
		return 0;
	}

	SOCKADDR_IN addr = {};
	addr.sin_family = AF_INET;
	addr.sin_port = htons(4444);
	addr.sin_addr.s_addr = htonl(INADDR_ANY);

	if(bind(skt, (SOCKADDR*)&addr,sizeof(addr))==SOCKET_ERROR){
		cout << "bind error";
		closesocket(skt);
		WSACleanup();
		return 0;
	}
	if(listen(skt,SOMAXCONN)==SOCKET_ERROR){
		cout << "listen error";
		closesocket(skt);
		WSACleanup();
		return 0;
	}

	SOCKADDR_IN client = {0};
	int client_size = sizeof(client);

	SOCKET client_sock;
	client_sock = accept(skt,(SOCKADDR*)&client,&client_size);
	if(client_sock==INVALID_SOCKET){
		cout << "accept error";
		closesocket(client_sock);
		closesocket(skt);
		WSACleanup();
		return 0;
	}

	closesocket(client_sock);
	closesocket(skt);
	WSACleanup();
}

[[[   클라이언트   ]]]

#include <iostream>
#include <winsock2.h>
using namespace std;

#define PACKET_SIZE 1024

int main(){
	WSADATA wsa;
	if(WSAStartup(MAKEWORD(2,2),&wsa)!=0){
		cout << "WSA error";
		WSACleanup();
		return 0;
	}

	SOCKET skt;
	skt = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
	if(skt==INVALID_SOCKET){
		cout << "socket error";
		closesocket(skt);
		WSACleanup();
		return 0;
	}

	SOCKADDR_IN addr = {};
	addr.sin_family = AF_INET;
	addr.sin_port = htons(4444);
	addr.sin_addr.s_addr = inet_addr("127.0.0.1");
	
	while(connect(skt, (SOCKADDR*)&addr,sizeof(addr)));
    
	closesocket(skt);
	WSACleanup();
}