2017-06-06 작업일지

#include <winsock2.h>

#include <windows.h>

#include <stdio.h>

#define SERVER_PORT 5000  // 0x1388 (포트 5000)

#define BUFFER_SIZE 1000

typedef struct {

    SOCKET socket;

    char buffer[BUFFER_SIZE];

    int bufferSize;

} ClientSession;

//  로그인 서버에 연결하는 함수

signed int ConnectToLoginServer(ClientSession* client, const char* ipAddress) {

    if (!client || !ipAddress) return 0;

    client->socket = socket(AF_INET, SOCK_STREAM, 0);

    if (client->socket == INVALID_SOCKET) {

        return 0;

    }

    struct sockaddr_in serverAddr;

    serverAddr.sin_family = AF_INET;

    serverAddr.sin_port = htons(SERVER_PORT);

    serverAddr.sin_addr.s_addr = inet_addr(ipAddress);

    DWORD startTime = GetTickCount();

    // 서버에 연결 시도

    while (connect(client->socket, (struct sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {

        int error = WSAGetLastError();

        if (error != WSAECONNREFUSED && error != WSAENETUNREACH && error != WSAETIMEDOUT) {

            closesocket(client->socket);

            return 0;

        }

        if (GetTickCount() - startTime > 5000) {

            closesocket(client->socket);

            return 0;

        }

    }

    // 소켓 비동기 설정

    if (WSAAsyncSelect(client->socket, NULL, 0, FD_CONNECT | FD_READ | FD_CLOSE) == SOCKET_ERROR) {

        closesocket(client->socket);

        return 0;

    }

    client->bufferSize = 0;

    // 로그인 패킷 준비 후 전송

    return PrepareLoginPacket(client) ? 1 : 0;

}

// 로그인 패킷을 준비하는 함수

bool PrepareLoginPacket(ClientSession* client) {

    if (!client) return false;

    client->buffer[0] = 34;

    int offset = 1;

    // ID 문자열 추가

    const char* userId = "TestUser";  // byte_43ED3C의 값 대체

    int userIdLen = strlen(userId);

    client->buffer[offset++] = (char)userIdLen;

    memcpy(client->buffer + offset, userId, userIdLen);

    offset += userIdLen;

    // 비밀번호 문자열 추가

    const char* password = "TestPass";  // byte_43ED10의 값 대체

    int passwordLen = strlen(password);

    client->buffer[offset++] = (char)passwordLen;

    memcpy(client->buffer + offset, password, passwordLen);

    offset += passwordLen;

    client->buffer[offset] = 40;

    client->bufferSize = offset + 1;

    // 패킷 전송

    return SendLoginPacket(client);

}

//  로그인 패킷을 서버로 전송하는 함수

signed int SendLoginPacket(ClientSession* client) {

    if (!client || client->bufferSize <= 0) return 0;

    int bytesSent = 0;

    while (bytesSent < client->bufferSize) {

        int result = send(client->socket, client->buffer + bytesSent, client->bufferSize - bytesSent, 0);

        if (result == SOCKET_ERROR) {

            if (WSAGetLastError() != WSAEWOULDBLOCK) {

                return 0;

            }

        } else {

            bytesSent += result;

        }

    }

    client->bufferSize = 0;

    return 1;

}