public static bool SafetyDownloadFile(string strFileName, string strUrl, int trytimes = 5, string fileServerMD5 = "")
{
int i = 0;
bool result;
while (i < trytimes)
{
i++;
bool flag = HttpbrokenDownloader.BrokenDownloadFile(strFileName, strUrl);
bool flag2 = flag;
if (flag2)
{
bool flag3 = !string.IsNullOrEmpty(fileServerMD5);
if (flag3)
{
bool flag4 = MD5Helper.GetFileMD5(strFileName) != fileServerMD5;
if (flag4)
{
File.Delete(strFileName);
continue;
}
}
result = true;
return(result);
}
Thread.Sleep(1000);
}
result = true;
return(result);
}
private static bool DownloadRange(string strURL, string fname, int startindex, int endindex)
{
bool result;
try
{
Uri requestUri = new Uri(strURL);
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(requestUri);
httpWebRequest.AddRange(startindex, endindex);
using (Stream responseStream = httpWebRequest.GetResponse().GetResponseStream())
{
int num = endindex - startindex;
byte[] array = new byte[num];
int datalen = responseStream.Read(array, 0, num);
HttpbrokenDownloader.WriteDataToFile(fname, startindex, array, datalen);
}
result = true;
}
catch
{
result = false;
}
return(result);
}