public TransactionReportClient(Guid merchantKey, Uri hostUri) {
if (merchantKey == Guid.Empty) {
merchantKey = ConfigurationUtility.GetConfigurationKey("MerchantKey");
}
this.MerchantKey = merchantKey;
if (hostUri == null) { throw new ArgumentNullException("hostUri"); }
this.HostUri = hostUri;
this.HttpUtility = new HttpUtility();
}
public static void DownloadFile(HttpContext context, string filePath)
{
HttpRequest Request = context.Request;
HttpResponse Response = context.Response;
Response.Clear();
Response.Buffer = false;
Response.AddHeader("Accept-Ranges", "bytes");
Response.ContentType = MediaTypeNames.Application.Octet;
using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
long offset = 0L, length = stream.Length;
#region Resolve Range
string range = Request.Headers["Range"];
int index;
//Range:bytes=1024-
//Range:bytes=1024-2048
//Range:bytes=-1024
//Range:bytes=0-512,1024-2048
if (range != null && (index = range.IndexOf("=")) != -1)
{
string[] ranges = range.Substring(index + 1).Split(',');
if (ranges.Length > 1)
{
Response.StatusCode = 416; //not supported multipart/byterange
Response.End();
}
bool flag = false;
if (ranges[0].StartsWith("-"))
{
long _p, _absp;
if (long.TryParse(ranges[0], out _p) && (_absp = Math.Abs(_p)) <= length)
{
if (_p < 0)
{
offset = length - _absp;
length = _absp;
flag = true;
}
}
}
else
{
ranges = ranges[0].Split('-');
if (ranges.Length == 2)
{
long _p, _l;
if (ranges[1] == string.Empty)
{
if (long.TryParse(ranges[0], out _p) && _p <= length)
{
offset = _p;
flag = true;
}
}
else if (long.TryParse(ranges[0], out _p) && long.TryParse(ranges[1], out _l) && _p > 0 && _l > 0 && _p < _l && _l < length)
{
offset = _p;
length = _l + 1;
flag = true;
}
}
}
if (!flag)
{
Response.StatusCode = 416; //Requested range not satisfiable
Response.End();
}
Response.StatusCode = 206;
Response.AddHeader("Content-Range", "bytes " + offset.ToString() + "-" + length.ToString() + "/" + stream.Length.ToString());
}
#endregion
Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(Path.GetFileName(filePath)));
Response.AddHeader("Content-Length", length.ToString());
Response.TransmitFile(filePath, offset, length);
}
Response.End();
}
