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DownloadFileAsync: don't use stream.Position if !CanSeek

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Wizou 2024-02-01 21:24:49 +01:00
parent 6f3c8732ec
commit 0ad7d696a5
3 changed files with 4 additions and 4 deletions
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4
src/Client.Helpers.cs
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@ -317,7 +317,7 @@ namespace WTelegram
var client = dc_id == 0 ? this : await GetClientForDC(dc_id, true);
using var writeSem = new SemaphoreSlim(1);
bool canSeek = outputStream.CanSeek;
long streamStartPos = outputStream.Position;
long streamStartPos = canSeek ? outputStream.Position : 0;
long fileOffset = 0, maxOffsetSeen = 0;
long transmitted = 0;
var tasks = new Dictionary<long, Task>();
@ -373,7 +373,7 @@ namespace WTelegram
await writeSem.WaitAsync();
try
{
if (streamStartPos + offset != outputStream.Position) // if we're about to write out of order
if (canSeek && streamStartPos + offset != outputStream.Position) // if we're about to write out of order
{
await outputStream.FlushAsync(); // async flush, otherwise Seek would do a sync flush
outputStream.Seek(streamStartPos + offset, SeekOrigin.Begin);