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Added range support again.

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Fixed file stream read access to allow multiple processes to access the file.
This commit is contained in:
Uncled1023 2017-04-10 15:05:54 -07:00
parent 6a1222a667
commit 3490104980
3 changed files with 75 additions and 6 deletions
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2
Teknik/Areas/Podcast/Controllers/PodcastController.cs
View File

@ -94,7 +94,7 @@ namespace Teknik.Areas.Podcast.Controllers
{
if (System.IO.File.Exists(file.Path))
{
FileStream fileStream = new FileStream(file.Path, FileMode.Open, FileAccess.Read);
FileStream fileStream = new FileStream(file.Path, FileMode.Open, FileAccess.Read, FileShare.Read);
Response.AddHeader("Content-Length", file.ContentLength.ToString());

77
Teknik/Areas/Upload/Controllers/UploadController.cs
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@ -187,15 +187,81 @@ namespace Teknik.Areas.Upload.Controllers
{
string subDir = fileName[0].ToString();
string filePath = Path.Combine(Config.UploadConfig.UploadDirectory, subDir, fileName);
long startByte = 0;
long endByte = contentLength - 1;
long length = contentLength;
if (System.IO.File.Exists(filePath))
{
#region Range Calculation
// check to see if we need to pass a specified range
if (byRange)
{
long anotherStart = startByte;
long anotherEnd = endByte;
string[] arr_split = Request.ServerVariables["HTTP_RANGE"].Split(new char[] { '=' });
string range = arr_split[1];
// Make sure the client hasn't sent us a multibyte range
if (range.IndexOf(",") > -1)
{
// (?) Shoud this be issued here, or should the first
// range be used? Or should the header be ignored and
// we output the whole content?
Response.AddHeader("Content-Range", "bytes " + startByte + "-" + endByte + "/" + contentLength);
throw new HttpException(416, "Requested Range Not Satisfiable");
}
// If the range starts with an '-' we start from the beginning
// If not, we forward the file pointer
// And make sure to get the end byte if spesified
if (range.StartsWith("-"))
{
// The n-number of the last bytes is requested
anotherStart = startByte - Convert.ToInt64(range.Substring(1));
}
else
{
arr_split = range.Split(new char[] { '-' });
anotherStart = Convert.ToInt64(arr_split[0]);
long temp = 0;
anotherEnd = (arr_split.Length > 1 && Int64.TryParse(arr_split[1].ToString(), out temp)) ? Convert.ToInt64(arr_split[1]) : contentLength;
}
/* Check the range and make sure it's treated according to the specs.
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
*/
// End bytes can not be larger than $end.
anotherEnd = (anotherEnd > endByte) ? endByte : anotherEnd;
// Validate the requested range and return an error if it's not correct.
if (anotherStart > anotherEnd || anotherStart > contentLength - 1 || anotherEnd >= contentLength)
{
Response.AddHeader("Content-Range", "bytes " + startByte + "-" + endByte + "/" + contentLength);
throw new HttpException(416, "Requested Range Not Satisfiable");
}
startByte = anotherStart;
endByte = anotherEnd;
length = endByte - startByte + 1; // Calculate new content length
// Ranges are response of 206
Response.StatusCode = 206;
}
#endregion
// Add cache parameters
Response.Cache.SetCacheability(HttpCacheability.Public);
Response.Cache.SetMaxAge(new TimeSpan(365, 0, 0, 0));
Response.Cache.SetLastModified(dateUploaded);
// We accept ranges
Response.AddHeader("Accept-Ranges", "0-" + contentLength);
// Notify the client the byte range we'll be outputting
Response.AddHeader("Content-Range", "bytes " + startByte + "-" + endByte + "/" + contentLength);
// Notify the client the content length we'll be outputting
Response.AddHeader("Content-Length", contentLength.ToString());
Response.AddHeader("Content-Length", length.ToString());
// Create content disposition
var cd = new System.Net.Mime.ContentDisposition
@ -213,7 +279,10 @@ namespace Teknik.Areas.Upload.Controllers
}
// Read in the file
FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
// Reset file stream to starting position (or start of range)
fs.Seek(startByte, SeekOrigin.Begin);
try
{
@ -225,7 +294,7 @@ namespace Teknik.Areas.Upload.Controllers
return new FileGenerateResult(url,
contentType,
(response) => ResponseHelper.StreamToOutput(response, true, new AESCryptoStream(fs, false, keyBytes, ivBytes, "CTR", "NoPadding"), (int)contentLength, Config.UploadConfig.ChunkSize),
(response) => ResponseHelper.StreamToOutput(response, true, new AESCryptoStream(fs, false, keyBytes, ivBytes, "CTR", "NoPadding"), (int)length, Config.UploadConfig.ChunkSize),
false);
}
else // Otherwise just send it
@ -233,7 +302,7 @@ namespace Teknik.Areas.Upload.Controllers
// Send the file
return new FileGenerateResult(url,
contentType,
(response) => ResponseHelper.StreamToOutput(response, true, fs, (int)contentLength, Config.UploadConfig.ChunkSize),
(response) => ResponseHelper.StreamToOutput(response, true, fs, (int)length, Config.UploadConfig.ChunkSize),
false);
}
}

2
Teknik/Teknik.csproj
View File

@ -843,7 +843,7 @@
<AutoAssignPort>True</AutoAssignPort>
<DevelopmentServerPort>65244</DevelopmentServerPort>
<DevelopmentServerVPath>/</DevelopmentServerVPath>
<IISUrl>https://localhost:44301/</IISUrl>
<IISUrl>https://localhost:44300/</IISUrl>
<NTLMAuthentication>False</NTLMAuthentication>
<UseCustomServer>False</UseCustomServer>
<CustomServerUrl>