[mono-android] The operation has timed out. at System.Net.WebConnectionStream.Read

[Jonathan Pryor]

On Jun 20, 2012, at 10:39 AM, klimaye wrote:
...
> We started using .net 4.0's inputStream.CopyTo(outputStream) instead of doing the stream copy ourselves via code.
> 
> Since then we have been experiencing this 'Timeout error' intermittently.
...
> To narrow down the problem, we have performed some tests (per 12 MB file size copy operation using streams) on different devices with the following results:
> 
> •	Samsung Galaxy S running Froyo 2.2 – No problems (tested 5 times in a row) 
> •	Vizio VTAB1008 running Honeycomb 3.1 – No problems (tested 10 times in a row)
> •	Samsung Galaxy S 4G running Gingerbread 2.3.3 – No Problems (tested 3 times in a row)
> •	Samsung Galaxy Tab 7 running Honeycomb 3.2 – No Problems (tested 5 times in a row)
> •	Samsung Galaxy S II running ICS 4.0.3 - FAILED
> •	Acer Iconia A500 running Homeycomb 3.1 – No Problem (10 times)
> •	Acer Iconia A500 running ICS 4.0.31 – FAILED

We're not sure why you're seeing this, but we have a couple of things to try.

Stream.CopyTo(Stream) defaults to using a 16KB buffer size. Perhaps this is too large for ICS? Try using the Stream.CopyTo(Stream, int) overload and use a buffer size of 1KB or 4KB.

If you're using HttpWebRequest, you might also try ensuring that you dispose of the HttpWebResponse stream:

	https://bugzilla.novell.com/show_bug.cgi?id=648862#c9

and setting HttpWebRequest.KeepAlive to false:

	https://bugzilla.novell.com/show_bug.cgi?id=648862#c12

Thanks,
 - Jon