Bug 42589 - HttpWebRequest ignoring timeout > 140 seconds
Summary: HttpWebRequest ignoring timeout > 140 seconds
Alias: None
Product: Class Libraries
Classification: Mono
Component: System.Net.Http ()
Version: unspecified
Hardware: Macintosh Mac OS
: Normal normal
Target Milestone: Future Release
Assignee: Marek Safar
Depends on:
Reported: 2016-07-15 11:45 UTC by Ole Friis Østergaard
Modified: 2016-08-31 21:00 UTC (History)
6 users (show)

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

Timeout example (4.25 KB, application/zip)
2016-07-15 11:45 UTC, Ole Friis Østergaard

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Description Ole Friis Østergaard 2016-07-15 11:45:32 UTC
Created attachment 16681 [details]
Timeout example

Very simple example:

  var request = (HttpWebRequest) WebRequest.Create("http://localhost:4567/timeout"); // Some very slow endpoint
  request.Timeout = 1000000; // More than 16 minutes

The above will time out after approximately 2 minutes 20 seconds (well, unless the server responds before that).

Attached is a very simple C# solution and a simple Sinatra web server for reproducing. The server sleeps for 2 minutes 40 seconds before responding, the client times out after 2 minutes 20 seconds.

Running the same example from .NET on Windows (towards the same server) works fine - waits for 2 minutes 40 seconds, doesn't throw any exceptions.

Running Mono 4.4.1 on OS X 10.11.5.
Comment 1 Chris Hamons 2016-07-15 13:42:31 UTC
MonoMac, and Xamarin.Mac are products that allow you to target desktop OS X (Cocoa). Since this issue appears unrelated, and only deals with HttpWebRequest, I've moved it to the right section.
Comment 2 Ole Friis Østergaard 2016-07-18 05:49:38 UTC
Thanks Chris! I sure did ponder about the Product/Component, but wasn't able to find anything better... Thanks for doing that!
Comment 3 Marek Safar 2016-08-31 14:49:02 UTC
It works fine with Mono master and Mono 4.6. I get a response after 160 seconds
Comment 4 Rodrigo Kumpera 2016-08-31 21:00:52 UTC
This was a mono 4.4 regression that Ludovic fixed.

The current version on the alpha channel should fix the issue.