initsock.h

WinSocket各种阻塞非阻塞模式的简单例子都已通过调试适合网络编程初学者

#include <winsock2.h>
#pragma comment(lib, "WS2_32.lib")

//初始化Winsock库
class CInitSock
{
public:
	CInitSock(BYTE minorVer = 2, BYTE majorVer = 2)
	{
		//初始化WS2_32.dll

		WSADATA wsaData; // 用来返回DLL库的详细信息
		WORD sockVersion = MAKEWORD(minorVer, majorVer); 
		//用来指向想要加载的Winsock库的版本 可用宏MAKEWORD(x, y) x:是高字节;y:是低字节
		
		//加载winsock库 函数调用成功返回0
		if (::WSAStartup(sockVersion, &wsaData) != 0)
		{
			exit(0);
		}
	}
	~CInitSock()
	{
		::WSACleanup(); //释放winsock库			
	}
};