microsoft.public.dotnet.framework Google Group

Re: MC++ or WIN32/C ?

vadm...@gmail.com (Vadym Stetsiak) — Sun, 11 Nov 2009 13:18:52 UT

Hello, Angshuman
If ported code will interact much with unmanaged code (call C API)
Then it can be better to use Managed C++
To give more presice advice it will be better to know more details about
that ported code: what code it will interact with; it is possible to do all
the stuff in the managed way etc.

MC++ or WIN32/C ?

angshuman.agar...@gmail.com (angshuman) — Sun, 11 Nov 2009 08:51:13 UT

Hi,
I want to port the Solaris 5.8 C-Code (Mixed Endian Code) to Windows
x64/
x86 platform for a .Net project. What is the best approach to
accomplish this ?
1. Should I first port to WIN32/C (using BIT shifting for enadianness)
and then introduce a PInvoke layer ?
OR
2. Should I use Managed C++ so that I directly get the support for

Re: WebClient UploadStringAsync hangs

no.peted.s...@no.nwlink.spam.com (Peter Duniho) — Sun, 11 Nov 2009 00:28:07 UT

YOU may want to make sure of that. Please feel free to if you like.
But I have no need or desire to, and telling me that _I_ need to do that
is simply incorrect.
The point of my test is to try to reproduce the problem the OP is
having. Not to prove or disprove the plausibility of some theory.
If you make an assumption about the cause of the problem, and then

Re: WebClient UploadStringAsync hangs

gslis...@yahoo.com (Goran Sliskovic) — Sat, 11 Nov 2009 23:46:02 UT

You can verify that the problem is in DNS by using network protocol analyzer
such as wireshark (free).
Most likely it is the problem with DNS. Try to resolve name in command
prompt using nslookup and see what happens. I guess it will block for some
time on your system, it doesn't on my.
Your ideas will probably work.

Re: WebClient UploadStringAsync hangs

gslis...@yahoo.com (Goran Sliskovic) — Sat, 11 Nov 2009 23:35:20 UT

...
We have first to make sure that delay in DNS resolution causes the problem.
You are not going to reproduce that if you DNS server is properly
configured.
Goran

Re: WebClient UploadStringAsync hangs

no.peted.s...@no.nwlink.spam.com (Peter Duniho) — Sat, 11 Nov 2009 21:12:25 UT

Have you tried it in the .NET 4.0 beta? Maybe it has been fixed, finally.
There is, of course, the issue that just because Durgaprasad Gorti
considered it an important issue in 2006, that doesn't mean he even
still works in that group, never mind still considers it important.
A much better way to state your case and provide for a way to track

Re: WebClient UploadStringAsync hangs

no.peted.s...@no.nwlink.spam.com (Peter Duniho) — Sat, 11 Nov 2009 21:04:52 UT

No. I have to test using the same scenario that the OP is using. The
point is to try to achieve results comparable to his, not necessarily to
find _another way_ to force a delay in DNS resolution.
Pete

Re: WebClient UploadStringAsync hangs

malcolm.h...@gmail.com (Malcolm Hall) — Sat, 11 Nov 2009 20:56:38 UT

Durgaprasad Gorti @ [link]
"You are absolutely correct. If you call the BeginGetResponse(), today
we block until the
name resolution happens. This is result of an unfortunate series of
issues we had to
workthrough in the initial release and we were locked into backward

Re: WebClient UploadStringAsync hangs

malcolm.h...@gmail.com (Malcolm Hall) — Sat, 11 Nov 2009 20:34:04 UT

Now we know the method causing the problem I found this post on the
topic:
[link]

Re: WebClient UploadStringAsync hangs

malcolm.h...@gmail.com (Malcolm Hall) — Sat, 11 Nov 2009 20:25:11 UT

The hang happens at BeginGetRequestStream. It must be my ISP cause I
had some other people try the ping test and theirs fails almost
instantly like you. I thought the whole point of the async methods is
to make it easier to have a responsive UI and not have the complexity
of creating threads but that all goes out the window beacuse of this

Re: WebClient UploadStringAsync hangs

gslis...@yahoo.com (Goran Sliskovic) — Sat, 11 Nov 2009 19:41:56 UT

...
...
You have to test probably with non-existant DNS server, not non-existant
domain. DNS servers are very fast in getting the IP from name. That means
that they are also fast in finding the domains that do not exist. ;)
Try to set a DNS server to a non-existant IP address in your network. Don't

Re: WebClient UploadStringAsync hangs

no.peted.s...@no.nwlink.spam.com (Peter Duniho) — Sat, 11 Nov 2009 19:10:20 UT

Well, like I said, I was unable to reproduce the problem. In fact, I
did the same kind of timing modification to the code example when I
original tested it, and while the call to UploadStringAsync() took
almost all of the total execution time, it was generally less than 100ms
to return.
Well, given that it's controlled by whether the domain is valid or not,

Re: WebClient UploadStringAsync hangs

malcolm.h...@gmail.com (Malcolm Hall) — Sat, 11 Nov 2009 13:27:49 UT

I too didn't see anything obvious in Reflector. I added current time
debug output before and after the line:
21/11/2009 13:19:55
21/11/2009 13:20:07
As you can see its taking 12 seconds to complete the call to
UploadStringAsync. This blocks the UI thread and causes (Not
responding) to appear in the Form's title. This is more or less the

RE: Need success stories / tool info. reg. implementing Licensing for WinForms !

hima...@ssware.com (LogicNP) — Sat, 11 Nov 2009 05:33:08 UT

CryptoLicensing ( [link] ) may fit your needs:
1. Supports trial/eval licenses.
2. Even if customer reinstalls, the original license is used and if its expired, the app won't work.
3. You can deploy your app with a pre-generate trial license of say 30 days.

RE: How to tell what version of framework is installed

familytreem...@discussions.microsoft.com (Family Tree Mike) — Fri, 11 Nov 2009 17:09:01 UT

"mp" wrote:
Mark,
Adding to what Paul said, .Net is never remotely installed for your use.
.Net is installed locally. You may have .Net on a server to run ASP.Net
websites however.
If you are new to programming in .Net, then you will need to also identify
the development platform. .Net 1.1 -> Visual Studio 2003, .Net 2.0 -> Visual