Network Class Library (System.Net)
Discuss using the System.Net namespace and associated Uri class in the .NET Framework to write code that leverages managed sockets, HTTP web requests, FTP, SMTP, P2P, etc.
Announcements
Forum Tips and Valid Topics
Aaron Oneal [NCL] Monday, July 28, 2008 9:05 PMIs this the right forum?
This forum is monitored on a regular basis by the Network Class Library (NCL) team. It is dedicated to questions about the System.Net namespace and the System.Uri class. If your question falls into this category, then you have come to the right place.To ensure a timely response, we can only actively monitor questions that fall within the category above. Non-related questions will be locked or moved to the most appropriate forum.
General Forum Tips
Here are a few suggestions (in this order of relevance) that will help you to get the best answer to your question as quickly as possible:
-
Search for your question on the forums or in Visual Studio's help system first
-- it's likely someone may have already answered your question, and you
won't have to waste time waiting for it to be answered again
- Post in the correct forum
(see below) -- since the experts in various subject matters tend to
stick to the set of forums that focus on those topics, a question about
the C# yield keyword posted in the Common Language Runtime forum will
likely take a lot longer to be answered than the same question in the
C# Language forum.
- Give details about your problem
-- rather than "When I call Process.Start I get an exception, please
help", provide the exception type, message, and call stack. Many times
it helps if you attach a snippet of the network trace/sniff of the
error that shows the error. For getting network sniffs use Network
Monitor and for network traces use the built in System.Net tracing
according to this blog.
If possible, provide a succinct code snippet that demonstrates the problem. This lets us reproduce the problem on our end and allows us to come up with an answer where just a general question may not have had enough details. Having this information means we can answer your question more quickly, without having to ask you for these details and wait for your response. If you have a big code sample please trim it down to the relevant parts that will help us understand the problem better. - Try to pinpoint the location of your error –
This will help us get to the root of the issue quickly. Saying
something like “My application cannot read from server” is less likely
to find a quick solution as compared to “My application gets a 505 not
found even though file is present since the trace shows that
FtpWebRequest does not handle a 505 error for an xyz command”
- Make sure your title summarizes the specific problem you have
-- since we try to answer the maximum number of questions we can with
our time, we often skim through question subjects to quickly find the
ones that we know the answers to. A question with a title of "Urgent!
Help needed!" is not as likely to get answered as a question with a
title of "How to define a sealed class using CodeDOM". A more
specific, detailed title is far more likely to get a response than
a general one.
- Once
you've received a correct answer to your question, either from a
Microsoft employee, an MVP, or the community in general, please mark
the post as answered.
You can do this with the "Mark as correct answer" button that appears
on the entry containing your answer. This step is important, since it
lets the Visual Studio search engine know that there is an answer in
that thread for others who may also have your problem. It also lets
people scanning the forums know that they can find an answer to that
question by reading the thread.
- Report bugs through Microsoft Connect, instead of on the forums
-- this site allows us to see the bugs in our bug
tracking database and get them assigned to the correct person. It also
allows you to follow the problem through to its resolution, and is a
much better way for us to handle issues you find than a bug report
posted on the forums.
- Use the report button -- as moderators we try to keep spam and inflammatory comments out of the forums. However if you do catch something that we missed, don't hesitate to use the report button so that we can keep the forums on-topic and a friendly place to go for help with your .NET questions!
Related Forums
When trying to figure out which forum is right for your question, here are some good candidates:
Network Class Library (System.Net) - for managed networking issues like HTTP, SMTP, Uri, FTP, Sockets etc.
Windows Communication Foundation (WCF) - for managed networking issues relating to WCF and SOA
.NET Framework Networking - for managed networking issues not relating to System.Net or WCF.
Common Language Runtime - for questions related to the runtime engine itself
.NET Development General - a general catchall for questions related to the BCL libraries, questions regarding the design of your code, etc.
Visual C# Language - for questions about the C# programming language, not the CLR or managed libraries
Visual Basic Language - same as above, but for VB
Visual C++ Language - same as above, but for C++ (both native and C++/CLI)
Windows Forms General - for questions about creating applications using the System.Windows.Forms libraries
ASP.NET Forums - for questions about writing web applications using ASP.NET
Development Forums - list of forums
Of course there are dozens of other forums available if your question doesn't fit into one of those categories. You can ask here where you should post if you have not yet found the right place.-
Search for your question on the forums or in Visual Studio's help system first
-- it's likely someone may have already answered your question, and you
won't have to waste time waiting for it to be answered again
Filtering and SortingUse these options to narrow down the question and discussion list.
- 41996

How can i get file using ftps?
Tempeck81 Thursday, September 22, 2011 12:21 PM - 38529

Error 404 'Not found' encoding problem?
RobboD Saturday, May 12, 2012 8:14 PM - 2112

Problem related to Delegates and Event handlers while using UDP Communication Protocol in Visual C# 2010 Windows Form Application development
Cool_Dude09 Sunday, May 20, 2012 10:59 AM - 2115

How to get the internet time server configured on a PC with C# code ?
AgnostikFront Friday, May 18, 2012 2:34 PM - 2240

How to invoke Built-in Computer's WiFi in Visual C# 2010?
Cool_Dude09 Wednesday, May 16, 2012 1:02 PM - 4238

HTTP GET Question
William256 Wednesday, May 16, 2012 12:30 PM - 6403

Multiple client simulation
himengg Monday, May 07, 2012 6:57 AM - 6181

Login System with FTP
Mila432 Thursday, May 17, 2012 10:27 PM - 3175

Use cookies to authenticate with Webclient
luiz_gouvea Thursday, May 17, 2012 5:45 PM - 103772

HttpWebRequest posting multipart/form-data
Abis24 Wednesday, May 18, 2011 7:57 PM - 2133

get IP address for a MAC
O Fernando Seabra Thursday, May 17, 2012 7:05 PM - 2372

StreamReader.Read fails to return certain TCP messages
Barry Quiat Wednesday, May 09, 2012 2:44 AM - 1176

Question(s): socket.RemoteEndPoint
Adel-G-Eibesh Thursday, May 17, 2012 2:35 AM - 3253

How to get local IP address using Web Service
lmundia Wednesday, May 16, 2012 1:05 PM - 4353

turning off Url Encoding
Chris1024 Thursday, May 10, 2012 1:53 PM - 11407

Why does pre-authenticate fail to authenticate?
Dan Moyse Thursday, May 10, 2012 6:32 PM - 10248

NetworkStream.Read issue
Sujima Monday, May 14, 2012 12:25 PM - 626237

how to monitor network traffic
witdaj Sunday, March 21, 2010 2:50 AM - 6337

socket tcp listener and send a file to client
Raymond Chiu Monday, May 14, 2012 8:45 AM - 5431

HttpListener continues response
VZdemon Sunday, May 13, 2012 7:38 AM

