Server Socket

소켓 소스입니다. 이번엔 Server 구요. 가장 기본형이죠.
#include <iostream> #include <WinSock2.h> #pragma comment( lib, "ws2_32.lib" ) using namespace std; #pragma pack( push, 1 ) typedef struct _PACKET_ { int nA; char strB[ 10 ]; char nC; } PACKET; #pragma pack( pop ) void main() { WSADATA wsaData; SOCKET socServer, socClient; SOCKADDR_IN sockAddr, clientAddr; int nClientSize; PACKET cPacket; cPacket.nA = 100000; cPacket.nC = 100; strcpy_s( cPacket.strB, 10, "abcdefghi" ); try { if( WSAStartup( MAKEWORD( 2, 2 ), &wsaData ) != 0 ) { // WSAStartup(로드 Winsock 2.2 ) throw WSAGetLastError(); } // socket 생성 socServer = socket( AF_INET, SOCK_STREAM, 0 ); if( socServer == INVALID_SOCKET ) { throw WSAGetLastError(); } // SOCKADDR_IN 설정 memset( ( void * )&sockAddr, 0, sizeof( SOCKADDR_IN ) ); sockAddr.sin_family = AF_INET; sockAddr.sin_addr.s_addr = htonl( INADDR_ANY ); sockAddr.sin_port = htons( 8888 ); if( bind( socServer, ( SOCKADDR * )&sockAddr, sizeof( SOCKADDR_IN ) ) == SOCKET_ERROR ) { // bind(소켓에 주소 할당) throw WSAGetLastError(); } if( listen( socServer, 5 ) == SOCKET_ERROR ) { // 연결 요청 대기 상태 throw WSAGetLastError(); } nClientSize = sizeof( SOCKADDR_IN ); socClient = accept( socServer, ( SOCKADDR * )&clientAddr, &nClientSize ); // 연결 요청 수락 if( socClient == INVALID_SOCKET ) { throw WSAGetLastError(); } cout << "Client IP: " << inet_ntoa( clientAddr.sin_addr ) << " Port: " << ntohs( clientAddr.sin_port ) << endl; send( socClient, ( char * )&cPacket, sizeof( PACKET ), 0 ); } catch( int ex ) { cout << "WSAGetLastError: " << ex << endl; } closesocket( socClient ); closesocket( socServer ); WSACleanup(); }