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Made podcasts stream in batches

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This commit is contained in:
Uncled1023 2017-02-09 22:34:50 -08:00
parent e7f02471e5
commit e5b8533e33
4 changed files with 164 additions and 74 deletions
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6
Teknik/Areas/Podcast/Controllers/PodcastController.cs
View File

@ -88,8 +88,9 @@ namespace Teknik.Areas.Podcast.Controllers
{
if (System.IO.File.Exists(file.Path))
{
FileStream fileStream = new FileStream(file.Path, FileMode.Open, FileAccess.Read);
// Read in the file
byte[] data = System.IO.File.ReadAllBytes(file.Path);
//byte[] data = System.IO.File.ReadAllBytes(file.Path);
// Create File
var cd = new System.Net.Mime.ContentDisposition
@ -100,7 +101,8 @@ namespace Teknik.Areas.Podcast.Controllers
Response.AppendHeader("Content-Disposition", cd.ToString());
return File(data, file.ContentType);
return new FileGenerateResult(file.FileName, file.ContentType, (response) => ResponseHelper.StreamToOutput(response, fileStream, file.ContentLength, 4 * 1024), false);
//return File(data, file.ContentType);
}
}
}

77
Teknik/Areas/Upload/Controllers/UploadController.cs
View File

@ -196,7 +196,6 @@ namespace Teknik.Areas.Upload.Controllers
// we output the whole content?
Response.AddHeader("Content-Range", "bytes " + startByte + "-" + endByte + "/" + upload.ContentLength);
throw new HttpException(416, "Requested Range Not Satisfiable");
}
// If the range starts with an '-' we start from the beginning
@ -272,7 +271,7 @@ namespace Teknik.Areas.Upload.Controllers
return new FileGenerateResult(upload.Url,
contentType,
(response) => this.DecryptStreamToOutput(response, fs, (int)length, keyBytes, ivBytes, "CTR", "NoPadding", Config.UploadConfig.ChunkSize),
(response) => ResponseHelper.DecryptStreamToOutput(response, fs, (int)length, keyBytes, ivBytes, "CTR", "NoPadding", Config.UploadConfig.ChunkSize),
false);
}
else // Otherwise just send it
@ -280,7 +279,10 @@ namespace Teknik.Areas.Upload.Controllers
// Don't buffer the response
Response.Buffer = false;
// Send the file
return File(fs, contentType);
return new FileGenerateResult(upload.Url,
contentType,
(response) => ResponseHelper.StreamToOutput(response, fs, (int)length, Config.UploadConfig.ChunkSize),
false);
}
}
}
@ -291,75 +293,6 @@ namespace Teknik.Areas.Upload.Controllers
return Redirect(Url.SubRouteUrl("error", "Error.Http403"));
}
public void DecryptStreamToOutput(HttpResponseBase response, System.IO.Stream fileStream, int length, byte[] key, byte[] iv, string mode, string padding, int chunkSize)
{
try
{
response.Flush();
IBufferedCipher cipher = AES.CreateCipher(false, key, iv, mode, padding);
int curByte = 0;
int processedBytes = 0;
byte[] buffer = new byte[chunkSize];
int bytesRemaining = length;
int bytesToRead = chunkSize;
do
{
if (chunkSize > bytesRemaining)
{
bytesToRead = bytesRemaining;
}
processedBytes = AES.ProcessCipherBlock(cipher, fileStream, bytesToRead, buffer, 0);
if (processedBytes > 0)
{
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
}
curByte += processedBytes;
bytesRemaining -= processedBytes;
}
while (processedBytes > 0 && bytesRemaining > 0);
if (bytesRemaining > 0)
{
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
// Finalize processing of the cipher
processedBytes = AES.FinalizeCipherBlock(cipher, buffer, 0);
if (processedBytes > 0)
{
// We have bytes, lets write them to the output
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
}
}
}
catch (HttpException httpEx)
{
if (httpEx.ErrorCode == -2147023667)
{
// do nothing
}
else
{
Logging.Logger.WriteEntry(httpEx);
}
}
catch (Exception ex)
{
Logging.Logger.WriteEntry(ex);
}
finally
{
// dispose of file stream
fileStream.Dispose();
}
}
[HttpPost]
[AllowAnonymous]
public FileResult DownloadData(string file)

154
Utilities/Utilities/ResponseHelper.cs Normal file
View File

@ -0,0 +1,154 @@
using Org.BouncyCastle.Crypto;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
namespace Teknik.Utilities
{
public static class ResponseHelper
{
public static void StreamToOutput(HttpResponseBase response, Stream stream, int length, int chunkSize)
{
try
{
response.Flush();
int curByte = 0;
int processedBytes = 0;
byte[] buffer = new byte[chunkSize];
int bytesRemaining = length;
int bytesToRead = chunkSize;
do
{
if (chunkSize > bytesRemaining)
{
bytesToRead = bytesRemaining;
}
processedBytes = stream.Read(buffer, 0, bytesToRead);
if (processedBytes > 0)
{
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
}
curByte += processedBytes;
bytesRemaining -= processedBytes;
}
while (processedBytes > 0 && bytesRemaining > 0);
if (bytesRemaining > 0)
{
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
// Finalize processing of the cipher
processedBytes = stream.Read(buffer, 0, bytesToRead);
if (processedBytes > 0)
{
// We have bytes, lets write them to the output
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
}
}
}
catch (HttpException httpEx)
{
// If we lost connection, that's fine
if (httpEx.ErrorCode == -2147023667)
{
// do nothing
}
else
{
throw httpEx;
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
// dispose of file stream
stream.Dispose();
}
}
public static void DecryptStreamToOutput(HttpResponseBase response, Stream stream, int length, byte[] key, byte[] iv, string mode, string padding, int chunkSize)
{
try
{
response.Flush();
IBufferedCipher cipher = AES.CreateCipher(false, key, iv, mode, padding);
int curByte = 0;
int processedBytes = 0;
byte[] buffer = new byte[chunkSize];
int bytesRemaining = length;
int bytesToRead = chunkSize;
do
{
if (chunkSize > bytesRemaining)
{
bytesToRead = bytesRemaining;
}
processedBytes = AES.ProcessCipherBlock(cipher, stream, bytesToRead, buffer, 0);
if (processedBytes > 0)
{
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
}
curByte += processedBytes;
bytesRemaining -= processedBytes;
}
while (processedBytes > 0 && bytesRemaining > 0);
if (bytesRemaining > 0)
{
// Clear the buffer
Array.Clear(buffer, 0, chunkSize);
// Finalize processing of the cipher
processedBytes = AES.FinalizeCipherBlock(cipher, buffer, 0);
if (processedBytes > 0)
{
// We have bytes, lets write them to the output
response.OutputStream.Write(buffer, 0, processedBytes);
response.Flush();
}
}
}
catch (HttpException httpEx)
{
// If we lost connection, that's fine
if (httpEx.ErrorCode == -2147023667)
{
// do nothing
}
else
{
throw httpEx;
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
// dispose of file stream
stream.Dispose();
}
}
}
}

1
Utilities/Utilities/Utilities.csproj
View File

@ -120,6 +120,7 @@
<Compile Include="ObjectHelper.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="RequestHelper.cs" />
<Compile Include="ResponseHelper.cs" />
<Compile Include="RSSFeedResult.cs" />
<Compile Include="StringExtensions.cs" />
<Compile Include="StringHelper.cs" />