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Merged
mateof merged 5 commits into from
Sep 9, 2025
Merged

release: v2.0.9 #35

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00c0e91
feat: add download grid from channels
mateof Apr 24, 2025
8bad38f
feat: show channel files
mateof May 24, 2025
b0b0cc6
feat: add media streaming from telegram (#32)
mateof Sep 6, 2025
7f93450
feat: media stream for huge files (#34)
mateof Sep 9, 2025
15f240b
Merge branch 'main' into develop
mateof Sep 9, 2025
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34 changes: 27 additions & 7 deletions TelegramDownloader/Controllers/FileController.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -277,29 +277,49 @@ public async Task<IActionResult> GetFileStream(string idChannel, string idFile,
var rangeHeader = request.Headers["Range"].ToString();

var file = await _fs.getItemById(idChannel, idFile);
long totalLength = file.Size;

TL.Message idM = await _ts.getMessageFile(idChannel, file.MessageId ?? file.ListMessageId.FirstOrDefault());

long totalLength = 0; // (await _fs.getItemById(idChannel, idFile)).Size;
long totalPartialFileLength = 0;

if(idM.media is MessageMediaDocument { document: Document document })
if (idM.media is MessageMediaDocument { document: Document document })
{
totalLength = document.size;
totalPartialFileLength = document.size;
}

long from = 0;
long initialFrom = 0;
long initialPartFrom = 0;
long to = 0;

if (!string.IsNullOrEmpty(rangeHeader) && rangeHeader.StartsWith("bytes="))
{
var range = rangeHeader.Replace("bytes=", "").Split('-');
from = long.Parse(range[0]);
initialFrom = from;
initialPartFrom = from;
if (range.Length > 1 && !string.IsNullOrEmpty(range[1]))
to = long.Parse(range[1]);
}

if (from >= totalPartialFileLength)
{
Console.WriteLine("Take a file part: from: " + from + ", totalPartialFileLength: " + totalPartialFileLength);
int filePart = 0;
while(from >= totalPartialFileLength)
{
filePart++;
from -= totalPartialFileLength;
}
idM = await _ts.getMessageFile(idChannel, file.ListMessageId[filePart]);
if (idM.media is MessageMediaDocument { document: Document document2 })
{
totalPartialFileLength = document2.size;
}
initialPartFrom = from;
}

if (from > 0)
{
from = (from / 524288) * 524288;
Expand All @@ -315,12 +335,12 @@ public async Task<IActionResult> GetFileStream(string idChannel, string idFile,
else
to = ((to + 524288) / 524288) * 524288;

if (to > totalLength)
if (to > totalPartialFileLength)
{
to = totalLength;
to = totalPartialFileLength;
}

if (totalLength == initialFrom)
if (totalPartialFileLength == initialPartFrom)
{
Response.StatusCode = 416; // Range Not Satisfiable
Response.Headers["Content-Range"] = $"bytes */{totalLength}";
Expand All @@ -335,7 +355,7 @@ public async Task<IActionResult> GetFileStream(string idChannel, string idFile,

//Console.WriteLine("Total download length: " + data.Length);

long skipedBytes = initialFrom - from - (length - data.Length);
long skipedBytes = initialPartFrom - from - (length - data.Length);

if (skipedBytes < 0) skipedBytes = 0;

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6 changes: 3 additions & 3 deletions TelegramDownloader/TelegramDownloader.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -15,13 +15,13 @@
<ItemGroup>
<PackageReference Include="Blazor.Bootstrap" Version="3.4.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Log4Net.AspNetCore" Version="8.0.0" />
<PackageReference Include="MongoDB.Driver" Version="3.4.0" />
<PackageReference Include="MongoDB.Driver" Version="3.4.3" />
<PackageReference Include="QRCoder" Version="1.6.0" />
<PackageReference Include="Syncfusion.Blazor" Version="29.2.11" />
<PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.22.1" />
<PackageReference Include="Syncfusion.EJ2.AspNet.Core" Version="29.2.11" />
<PackageReference Include="System.IO.Hashing" Version="9.0.7" />
<PackageReference Include="WTelegramClient" Version="4.3.6" />
<PackageReference Include="System.IO.Hashing" Version="9.0.9" />
<PackageReference Include="WTelegramClient" Version="4.3.10" />
</ItemGroup>

<ItemGroup>
Expand Down