473,799 Members | 3,121 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

A question about Named Pipe?


hi,all
I have a question about named pipe.
How does the pipe server know the client closed the connection?
We can refer the example for CreateNamedPipe () function in MSDN.
In block mode, once ConnectNamedPip e() returns, it means the client
called CreateFile(),
and after finish reading and writing, client call CloseHandle(), at
this point, how does the pipe server know the pipe has been closed? And
if client did not call CloseHandle(), but not write anything to the
pipe, what will be returned in the server side ReadFile()?
Becuase in mostly examples, the server pipe will ReadFile(), and then
WriteFile() back and then DisconnectNamed Pipe(), what if the client
needs to sleep 10 minutes and then send some text to server?
Thanks.

Nov 17 '05 #1
0 1458

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
7466
by: Rajarshi Guha | last post by:
Hi, I'm having a little trouble when I read from a named pipe. I create a pipe by os.mkfifo('/tmp/mypipe') and then open it for reading with fin = open('/tmp/mypipe','r+')
6
10763
by: Srijit Kumar Bhadra | last post by:
Hello, Here is an example of Multithreaded Pipe Server and Client using the excellent ctypes library (Windows). Reference - MSDN: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ipc/base/multithreaded_pipe_server.asp and http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ipc/base/named_pipe_client.asp Best Regards,
5
17426
by: richard | last post by:
I have a simple test to pass information from a client to a server using named pipe. what I really want is: when I type a line on the client, the server will output the line immediately. but to my surprise, I always have to terminate the client to get the server in action, i.e. prints out what I typed. anything I missed? I am compiling using gcc without any option. thanks, ---RICH
4
7662
by: Ken Allen | last post by:
Is there any built-in facility for handling named pipes in C#/.Net, or must one use unsafe code to access the WIN32 API directly? There exists some code that uses named pipes heavily and there exists a need for that code to send some information to a new .Net service I am writing. It is a relatively simple matter for the existing code to use a named pipe to send the data, but I can find no references to how I can create the named pipe...
3
2638
by: EricR | last post by:
I am trying to use .NET to "tap into" a named pipe created by a non .NET 3rd party application. Specifically, the application is a table loading utility. It opens a named pipe and waits for input. Does anybody know how I can write to the named pipe from a .NET program. I have tried using the traditional file access methods, and it appears that pipes have a problem with file streams. I have tried API calls, but since I do not have the...
2
5066
by: FB's .NET Dev PC | last post by:
I am writing two services in VB.NET, one of which needs to send text strings to the other. After reading, I decided (perhaps incorrectly) that named pipes would be the best interprocess communication method for this task. I set about creating, on the pipe's server side, a new thread which would instantiate a blocking inbound message pipe, and the client side which would write to that pipe when needed. Being on the same PC, security is...
0
1217
by: EricR | last post by:
I am trying to use .NET to "tap into" a named pipe created by a non .NET 3rd party application. Specifically, the application is a table loading utility. It opens a named pipe and waits for input. Does anybody know how I can write to the named pipe from a .NET program. I have tried using the traditional file access methods, and it appears that pipes have a problem with file streams. I have tried API calls, but since I do not have the...
0
2915
by: olaf.dietsche | last post by:
Hi, The system is Windows XP and DB2 v8.1.7. I'm trying to load a text file via named pipe into a table. I have two programs: the first program creates the named pipe, waits for a client and writes the text file into the named pipe. the second program is doing the db2Load() call.
7
7657
by: andrewb | last post by:
Hi all, Having some trouble using named pipes and Visual Basic .NET and would appreciate and help you could offer. Essentially I am trying to develop a simple client/server application that exchanges text messages using named pipes. The internet resources seem a bit scarce and the only Microsoft resource I can find is http://support.microsoft.com/kb/871044.
0
9687
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
10482
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
1
10225
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10027
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9072
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
5463
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
1
4139
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
3759
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2938
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.