enum CMD {
CMD_LOGIN,
CMD_LOGIN_RESULT,
CMD_LOGOUT,
CMD_LOGOUT_RESULT,
CMD_ERROR,
};
// 消息头
struct DataHeader {
short dataLength;
short cmd;
};
struct Login:public DataHeader {
Login() {
dataLength = sizeof(Login);
cmd = CMD_LOGIN;
}
char userName[32];
char PassWord[32];
};
struct LoginResult: public DataHeader {
LoginResult() {
dataLength = sizeof(LoginResult);
cmd = CMD_LOGIN;
result = 0;
}
int result;
};
struct Logout:public DataHeader {
Logout() {
dataLength = sizeof(Logout);
cmd = CMD_LOGOUT;
}
char userName[32];
};
struct LogOutResult:public DataHeader {
LogOutResult() {
dataLength = sizeof(LogOutResult);
cmd = CMD_LOGOUT_RESULT;
result = 0;
}
int result;
};
int main()
{
// 启动Windows socket 环境
WORD ver = MAKEWORD(2, 2);
WSADATA dat;
WSAStartup(ver, &dat);
//----------------
// --用Socket API建立简易TCP服务器
// 创建一个socket
SOCKET _sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
// 绑定用于接受客户端连接的网络端口
sockaddr_in _sin = {};
_sin.sin_family = AF_INET;
_sin.sin_port = htons(9527);
_sin.sin_addr.S_un.S_addr = INADDR_ANY;
if (SOCKET_ERROR == bind(_sock, (sockaddr*)&_sin, sizeof(_sin)))
printf("ERROR,绑定用于接受客户端连接的网络端口失败...\n");
else
printf("绑定端口成功...\n");
// 监听端口
if (SOCKET_ERROR == listen(_sock, 5))
printf("监听网络端口失败...\n");
else
printf("监听网络端口成功...\n");
// 接收客户端连接
sockaddr_in clientAddr = {};
int nAddrLen = sizeof(sockaddr_in);
SOCKET _cSock = INVALID_SOCKET;
_cSock = accept(_sock, (sockaddr*)&clientAddr, &nAddrLen);
if (INVALID_SOCKET == _cSock)
printf("接受到无效客户端SOCKET...\n");
printf("新客户端加入:IP = %s\n", inet_ntoa(clientAddr.sin_addr));
char _recvBuf[128] = {};
while (true) {
DataHeader header = {};
int nLen = recv(_cSock, (char*)&header, sizeof(header), 0);
if (nLen <= 0) {
printf("客户端已退出，任务结束。");
break;
}
// 处理请求
switch () {
case CMD_LOGIN:{
Login login = {};
recv(_cSock, (char*)&login+sizeof(DataHeader), sizeof(login)-sizeof(DataHeader), 0);
printf("收到命令: CMD_LOGIN 数据长度: %d userName=%s Passwd=%s\n", \
,,);
// 忽略判断用户密码是否正确的过程
LoginResult ret;
send(_cSock, (char*)&ret, sizeof(LoginResult), 0);
}
break;
case CMD_LOGOUT: {
Logout logout = {};
recv(_cSock, (char*)&logout+sizeof(DataHeader), sizeof(logout)-sizeof(DataHeader), 0);
printf("收到命令: CMD_LOGIN 数据长度: %d userName=%s\n", \
, );
// 忽略判断用户密码是否正确的过程
LoginResult ret;
send(_cSock, (char*)&ret, sizeof(ret), 0);
}
default:
= CMD_ERROR;
= 0;
send(_cSock, (char*)&header, sizeof(header), 0);
}
}
closesocket(_sock);
WSACleanup();
return 0;
}