/// <summary>
/// 从服务器获取hosts文件
/// </summary>
/// <param name="URL">统一资源定位符</param>
/// <param name="filename">本地文件路径</param>
/// <param name="prog">窗体进度条，若无，可为null</param>
private static void GetFile(string URL, string filename, DownBox prog)
{
try
{
HttpWebRequest DownLink = (HttpWebRequest)HttpWebRequest.Create(URL);
DownLink.Timeout = 10000; //请求超时时间10s
HttpWebResponse Source = (HttpWebResponse)DownLink.GetResponse();
long totalBytes = Source.ContentLength;
if (totalBytes == -1) totalBytes = 2 * 1024 * 1024; //若无法获取文件大小，设默认为2MB
Stream StreamTotal = Source.GetResponseStream();
Stream StreamOut = new FileStream(filename, FileMode.Create);
long totalDownloadedByte = 0;
byte[] by = new byte[1024];
int OutSize = StreamTotal.Read(by, 0, (int)by.Length);
while (OutSize > 0)
{
totalDownloadedByte = OutSize + totalDownloadedByte;
Application.DoEvents();
StreamOut.Write(by, 0, OutSize);
if (prog != null)
{
prog.SetPoint((int)(totalDownloadedByte * 100 / totalBytes));
}
OutSize = StreamTotal.Read(by, 0, (int)by.Length);
}
//完成进度条
if (prog != null)
{
prog.SetPoint(100);
}
SoundPlayer snd = new SoundPlayer(Resources.ding);
snd.Play();
StreamOut.Close();
StreamTotal.Close();
}
catch
{
//网络错误操作
msg.SetDialog(3, Resources.msg_err_net);
msg.ShowDialog();
throw;
}
}
/// <summary>
/// 根据模式设定下载hosts文件
/// </summary>
/// <param name="insmode">选择hosts文件来源：0:本地; 1:Googlecode; 2: Sourceforge; 3: Github</param>
/// <param name="IPmode">IP协议选择: false:IPv4; true:IPv6</param>
/// <param name="downForm">下载反馈窗口</param>
private static void DownFile(int insmode, bool IPmode, DownBox downForm)
{
string[] DownPath = new string[4] {
"", @"http://huhamhire-hosts.googlecode.com/git/downloads/raw/",
@"http://hosts.huhamhire.com/downfile/raw/",
@"https://github.com/huhamhire/huhamhire-hosts/raw/master/downloads/raw/"};
string[] IpPath = new string[2] { @"ipv4", @"ipv6" };
//初始化路径
string url;
string localPath = Path.Combine(Environment.CurrentDirectory, @"resources");
if (insmode > 0)
{
url = DownPath[insmode] + IpPath[(IPmode ? 1 : 0)] + @"_win_ansi/hosts";
localPath = Path.Combine(localPath, (IpPath[(IPmode ? 1 : 0)] + @"_win_ansi"), @"hosts");
if (downForm != null)
{
downForm.SetPoint(0);
}
GetFile(url, localPath, downForm);
//对来自GoogleCode的文件转码
if (insmode == 1)
ReEncode(localPath);
return;
}
else
return;
}