Socket编程中一些常用到的方法

获得本地主机名和ip地址

bool getIPAddress(char * outIP, char * outHost)
{

	char   name[255];
	if (gethostname(name, sizeof(name)) == 0)
	{
		if (outHost != NULL)
			strcpy(outHost, name);
		PHOSTENT  hostinfo;
		if((hostinfo = gethostbyname(name)) != NULL)
		{
			LPCSTR pIP = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);
			if (outIP != NULL)
				strcpy(outIP, pIP);
			return true;
		}
	}
	return false;
}