Bug 7510 - Overloading HttpContent.SerializeToStreamAsync and using a StreamWriter doesn't behave properly.
Summary: Overloading HttpContent.SerializeToStreamAsync and using a StreamWriter doesn...
Status: RESOLVED FIXED
Alias: None
Product: Class Libraries
Classification: Mono
Component: System ()
Version: master
Hardware: PC Linux
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2012-09-27 13:19 UTC by Ivailo Karamanolev
Modified: 2012-10-04 06:53 UTC (History)
3 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:


Attachments
Example demonstrating the hang. (1.20 KB, text/x-csharp)
2012-09-27 13:19 UTC, Ivailo Karamanolev
Details


Notice (2018-05-24): bugzilla.xamarin.com is now in read-only mode.

Please join us on Visual Studio Developer Community and in the Xamarin and Mono organizations on GitHub to continue tracking issues. Bugzilla will remain available for reference in read-only mode. We will continue to work on open Bugzilla bugs, copy them to the new locations as needed for follow-up, and add the new items under Related Links.

Our sincere thanks to everyone who has contributed on this bug tracker over the years. Thanks also for your understanding as we make these adjustments and improvements for the future.


Please create a new report on GitHub or Developer Community with your current version information, steps to reproduce, and relevant error messages or log files if you are hitting an issue that looks similar to this resolved bug and you do not yet see a matching new report.

Related Links:
Status:
RESOLVED FIXED

Description Ivailo Karamanolev 2012-09-27 13:19:14 UTC
Created attachment 2640 [details]
Example demonstrating the hang.

When using HttpClient, in order to push data over the network you have to implement HttpContent and overload SerializeToStreamAsync. Inside the overload, if a StreamWriter is used and it is just flushed, everything works correctly. However, if the StreamWriter is disposed, even if it's set to leave the underlying stream open, the call never finishes. strace shows a connect() call and then a hang on wait (never send()s the data). Both of them work in MS.NET 4.5.

This doesn't work, but it should:
using (StreamWriter writer = new StreamWriter(stream, new UTF8Encoding(false), 4096, true))
{
    writer.WriteLine("hello world");
}

This works, but doesn't close the StreamWriter:
StreamWriter writer = new StreamWriter(stream);
writer.WriteLine("hello world");
writer.Flush();

Compiling the attached example is simple:
mcs -r:System.Net.Http Program.cs

The error happens when compiling both with mcs and Visual Studio 2012.
Comment 1 Marek Safar 2012-10-04 06:53:40 UTC
Fixed in master