Bug 56260 - Possible regression: This stream does not support writing at System.IO.Compression.DeflateStream.BeginWrite
Summary: Possible regression: This stream does not support writing at System.IO.Comp...
Alias: None
Product: Class Libraries
Classification: Mono
Component: System ()
Version: 5.0 (2017-02)
Hardware: PC Mac OS
: High critical
Target Milestone: 15.2.2
Assignee: Martin Baulig
Depends on:
Reported: 2017-05-12 06:20 UTC by Tomas Jansson
Modified: 2017-05-20 21:57 UTC (History)
10 users (show)

Tags: 15.2R
Is this bug a regression?: Yes
Last known good build:

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Description Tomas Jansson 2017-05-12 06:20:50 UTC
Using `FSharp.Data` and calling

    let response = Http.RequestString("http://www.twitter.com")

has worked fun up to 5.0. When I upgraded to I got the following exception:

System.InvalidOperationException: This stream does not support writing
  at System.IO.Compression.DeflateStream.BeginWrite (System.Byte[] buffer, System.Int32 offset, System.Int32 count, Syst
em.AsyncCallback cback, System.Object state) [0x00021] in <ee4df4cda5014c96916f8e16adf2d907>:0
  at System.IO.Stream+<>c.<BeginEndWriteAsync>b__53_0 (System.IO.Stream stream, System.IO.Stream+ReadWriteParameters arg
s, System.AsyncCallback callback, System.Object state) [0x00000] in <164469fa6d844a078126fd8006807335>:0
  at System.Threading.Tasks.TaskFactory`1[TResult].FromAsyncTrim[TInstance,TArgs] (TInstance thisRef, TArgs args, System
.Func`5[T1,T2,T3,T4,TResult] beginMethod, System.Func`3[T1,T2,TResult] endMethod) [0x00008] in <164469fa6d844a078126fd80
  at System.IO.Stream.BeginEndWriteAsync (System.Byte[] buffer, System.Int32 offset, System.Int32 count) [0x00000] in <1
  at System.IO.Stream.WriteAsync (System.Byte[] buffer, System.Int32 offset, System.Int32 count, System.Threading.Cancel
lationToken cancellationToken) [0x00009] in <164469fa6d844a078126fd8006807335>:0
  at System.IO.Compression.GZipStream.WriteAsync (System.Byte[] array, System.Int32 offset, System.Int32 count, System.T
hreading.CancellationToken cancellationToken) [0x00006] in <ee4df4cda5014c96916f8e16adf2d907>:0
  at System.IO.Compression.GZipStream.BeginRead (System.Byte[] array, System.Int32 offset, System.Int32 count, System.As
yncCallback asyncCallback, System.Object asyncState) [0x00009] in <ee4df4cda5014c96916f8e16adf2d907>:0
  at Microsoft.FSharp.Control.CommonExtensions+AsyncRead@2132.Invoke (System.Tuple`5[T1,T2,T3,T4,T5] tupledArg) [0x00025
] in <58e7b19fdff9fae1a74503839fb1e758>:0
  at <StartupCode$FSharp-Core>.$Control+FromBeginEnd@1895-4[TArg1,TArg2,TArg3].Invoke (System.Tuple`2[T1,T2] tupledArg)
[0x0002e] in <58e7b19fdff9fae1a74503839fb1e758>:0
  at <StartupCode$FSharp-Core>.$Control+FromBeginEnd@1834-1[T].Invoke (System.Threading.CancellationToken _arg4) [0x0005
c] in <58e7b19fdff9fae1a74503839fb1e758>:0
  at Microsoft.FSharp.Control.AsyncBuilderImpl+args@823-1[a,b].Invoke (a a) [0x00016] in <58e7b19fdff9fae1a74503839fb1e7
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <164469fa6d844a078126fd8006807335>:0
  at Microsoft.FSharp.Control.AsyncBuilderImpl.commit[a] (Microsoft.FSharp.Control.AsyncBuilderImpl+AsyncImplResult`1[T]
 res) [0x0002d] in <58e7b19fdff9fae1a74503839fb1e758>:0
  at Microsoft.FSharp.Control.CancellationTokenOps.RunSynchronouslyInCurrentThread[a] (System.Threading.CancellationToke
n token, Microsoft.FSharp.Control.FSharpAsync`1[T] computation) [0x00029] in <58e7b19fdff9fae1a74503839fb1e758>:0
  at Microsoft.FSharp.Control.CancellationTokenOps.RunSynchronously[a] (System.Threading.CancellationToken token, Micros
oft.FSharp.Control.FSharpAsync`1[T] computation, Microsoft.FSharp.Core.FSharpOption`1[T] timeout) [0x00014] in <58e7b19f
  at Microsoft.FSharp.Control.FSharpAsync.RunSynchronously[T] (Microsoft.FSharp.Control.FSharpAsync`1[T] computation, Mi
crosoft.FSharp.Core.FSharpOption`1[T] timeout, Microsoft.FSharp.Core.FSharpOption`1[T] cancellationToken) [0x00071] in <
  at FSharp.Data.Http.RequestString (System.String url, Microsoft.FSharp.Core.FSharpOption`1[T] query, Microsoft.FSharp.
Core.FSharpOption`1[T] headers, Microsoft.FSharp.Core.FSharpOption`1[T] httpMethod, Microsoft.FSharp.Core.FSharpOption`1
[T] body, Microsoft.FSharp.Core.FSharpOption`1[T] cookies, Microsoft.FSharp.Core.FSharpOption`1[T] cookieContainer, Micr
osoft.FSharp.Core.FSharpOption`1[T] silentHttpErrors, Microsoft.FSharp.Core.FSharpOption`1[T] responseEncodingOverride,
Microsoft.FSharp.Core.FSharpOption`1[T] customizeHttpRequest, Microsoft.FSharp.Core.FSharpOption`1[T] timeout) [0x00019]
 in <57950ff10a968414a7450383f10f9557>:0
  at <StartupCode$FSI_0002>.$FSI_0002.main@ () [0x0005c] in <b3e6a19481014d0c9b3acd5495987309>:0
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflectio
n.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in <164469fa6d844a07812
Stopped due to error

I also tried, but the bug was still there.

I've also registered this issue in the `FSharp.Data` repo, https://github.com/fsharp/FSharp.Data/issues/1053, but it seems like the issue is with mono.
Comment 1 Tomas Jansson 2017-05-12 06:38:42 UTC
Updated to since that is supposed to be stable but the error is still there.
Comment 2 Martin Baulig 2017-05-12 15:05:04 UTC
1.) Download binaries from http://fsharp.github.io/FSharp.Data/
2.) Run this:

$ fsharpi
> #r "./bin/FSharp.Data.dll";;
> open FSharp.Data;;
> let response = Http.RequestString("http://www.twitter.com");;

Confirmed working with and

Does not work with
Comment 3 Marek Safar 2017-05-12 15:16:38 UTC
The issue is actually in upstream CoreFX code. Relevant fix https://github.com/dotnet/corefx/commit/a6c7e23421701870c1eb855eae95e4605e5b04b3
Comment 4 Martin Baulig 2017-05-12 15:20:52 UTC
Comment 5 Martin Baulig 2017-05-12 15:22:45 UTC
The fix is already in 2017-04.
Comment 6 Martin Baulig 2017-05-12 19:44:23 UTC
Comment 7 Mateusz Lewko 2017-05-14 01:14:14 UTC
Sorry for asking this here, but where can I download version of mono (for Ubuntu) in which this bug has been fixed?
Comment 8 Saurabh Paunikar 2017-05-15 12:30:59 UTC
Verified on mono version 

After running 

let response = Http.RequestString("http://www.twitter.com");;

Got response as

 response : string =
  "<!DOCTYPE html>
<html lang="en" data-scribe-reduced-action-qu"+[312094 chars]

ScreenCast link: https://www.screencast.com/t/AldVPQfM71Rc
Comment 9 Luis Aguilera 2017-05-16 15:32:52 UTC
@mateusz we'll be releasing this fix, along with a few others, into the stable updater channel in the next few days.
Comment 10 Hermann Scharitzer 2017-05-17 12:37:47 UTC
It seems that I got bitten by this exact same bug.

Is there any workaround?
Right now this is a release blocker for us.
Comment 11 Hermann Scharitzer 2017-05-19 10:49:22 UTC
For anyone looking for a workaround: Disabling Deflate and GZip compression on the WebClient worked for me.
Comment 12 Mateusz Lewko 2017-05-20 21:57:34 UTC
@Luis Really looking forward to pushing this fix into the stable chanel as it's a deal breaker for me.