Couldn't read the packet length -> Can't decode packet"

[esavkin]

like #384

code: var resFile = await client.GetFile(new TLInputFileLocation() { local_id = location.local_id, secret = location.secret, volume_id = location.volume_id }, 1024 * 64);

After several successful photo downloads I'm getting the following exception: Couldn't read the packet length after that exception, on next call client.GetFile I'm always getting next exception: Can't decode packet after that exception all calls client.* methods fail with exception "Can't decode packet" Only after removed session file connection can be successfully established.

I think client.GetFile with exception set session file to corrupt state

Trace for Couldn't read the packet length: at TLSharp.Core.Network.TcpTransport.<Receieve>d__4.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.Network.MtProtoPlainSender.<Receive>d__7.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.Auth.Authenticator.<DoAuthentication>d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.TelegramClient.<ConnectAsync>d__9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.TelegramClient.<ReconnectToDcAsync>d__10.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.GetResult() at TLSharp.Core.TelegramClient.<GetFile>d__25.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at ChatWorker.Extensions.TelegramClientEx.<GetPhotoAndSave>d__1.MoveNext()

trace for Can't decode packet at TLSharp.Core.Network.MtProtoSender.DecodeMessage(Byte[] body) at TLSharp.Core.Network.MtProtoSender.<Receive>d__9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.TelegramClient.<ConnectAsync>d__9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at TLSharp.Core.TelegramClient.<GetFile>d__25.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at ChatWorker.Extensions.TelegramClientEx.<GetPhotoAndSave>d__1.MoveNext()

[Hvzh]

Hello, This is the code I use for reaqding pictures from chat:

`var tLMessageMediaPhoto = (TLMessageMediaPhoto)message.media;

var photo = (TLPhoto)tLMessageMediaPhoto.photo;

var photoSize = photo.sizes.lists.OfType<TLPhotoSize>().Last(); TLFileLocation tf = (TLFileLocation)photoSize.location; var resFile = await client.GetFile(new TLInputFileLocation { local_id = tf.local_id, secret = tf.secret, volume_id = tf.volume_id }, 0, -1); ` I read up to 700 photos in cycle and never had any problems

[esavkin]

Hvzh, did you try to read chat/user avatar, not pictures from chat?

[Hvzh]

No, never

чт, 3 авг. 2017 г., 11:04 Evgeny Savkin [email protected]:

Hvzh, did you try to read chat/user avatar, not pictures from chat?

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[andreysolovyov]

I seems, that issue linked to DC migration problem. After failing getfile method with unexpected exception sessionStorage did not restored correct ip address.

[samuelg78]

Me too getting the "Couldn't read the packet length" error very frequently. Anyway solution?

[knocte]

@samuelg78 if somebody knew a solution, it would have been fixed already. Please debug the problem and propose a bugfix in the form of a pull request.

[1g0r]

I'v got the same problem. It turned out that the problem was in closed tcp connection like described here https://social.msdn.microsoft.com/Forums/en-US/c857cad5-2eb6-4b6c-b0b5-7f4ce320c5cd/c-how-to-determine-if-a-tcpclient-has-been-disconnected?forum=netfxnetcom For me the solution was to override IsConnected property of the TLSharp.Core.TelegramClient class to check if the connection was actually closed.

Hope this will help to fix the problem.

[knocte]

For me the solution was to override IsConnected property of the TLSharp.Core.TelegramClient class to check if the connection was actually closed.

How did you do that?

[1g0r]

I've wrote proxy that encapsulates TelegramClient and overrides IsConnected like so: if (client.Client.Poll(0, SelectMode.SelectRead)) { byte[] buff = new byte[1]; if (client.Client.Receive(buff, SocketFlags.Peek) == 0) { return false; } } return true;

Where client is instance of the TcpClient class.

[amiroveisi]

@1g0r may i ask how did you initialized your TcpConnection? what's IP/Port for 'client'?

[emreordukaya]

I get the same promlem at #851

[ofcerci4826]

I get the same promlem at #851

Selam Emre, Bende aynı problemi yaşıyorum bu problemi aşabildin mi ?

[emreordukaya]

Postu okumussundur detaylıca. Sistem çalışıyordu. Sadece belli mesajların resmi olunca gocuyordu. En son resmi iptal ettim çözemedik. 17 Şub 2021 ÖS 2:25 tarihinde Osman Fahri ÇERÇİ [email protected] yazdı:

I get the same promlem at #851

Selam Emre, Bende aynı problemi yaşıyorum bu problemi aşabildin mi ?

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