#include?
#include?
#include?
#pragma?comment（lib?“ws2_32.lib“）
/**
*連接服務器
*/
SOCKET?connect_server（char?*host?int?port）;
void?disconnect（SOCKET?c）;
void?send_msg（SOCKET?c?char?*msg）;
void?recv_msg（SOCKET?c）;
char*?base64_encode（const?char*?data?int?data_len）;

const?char?base[]?=?“ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=“;



SOCKET?connect_server（char?*host?int?port）
{
	WSADATA?????????wd;
	int?ret?=?0;
	SOCKET?c;
	SOCKADDR_IN?saddr;
	struct?hostent?*pHostent;

	ret?=?WSAStartup（MAKEWORD（2?2）?&wd）;

	if?（ret?!=?0）
	{
		return?0;
	}

	if?（HIBYTE（wd.wVersion）?!=?2?||?LOBYTE（wd.wVersion）?!=?2）
	{
		printf（“Failed?to?initialize“）;
		WSACleanup（）;
		return?1;
	}



	c?=?socket（AF_INET?SOCK_STREAM?0）;

	pHostent?=?gethostbyname（host）;
	//????????printf（“%s“?inet_ntoa（*（（struct?in_addr*）pHostent->h_addr_list[0]）））;

	saddr.sin_addr.S_un.S_addr?=?*（（unsigned?long*）pHostent->h_addr_