473,391 Members | 1,426 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,391 software developers and data experts.

Listening on multiple ports

I am trying to write a vb.net socket application which listens for clients on two ports simultaneously. Is it possible to do so and how can this be done.

Please help.
Jun 27 '08 #1
5 4386
On Jun 26, 11:33*am, rome ez wrote:
I am trying to write a vb.net socket application which listens for clients on two ports simultaneously. Is it possible to do so and how can this be done.
Given that you're writing it in VB.NET, I'm not entirely clear why
you're posting on a C# newsgroup.
However, I'd just create two TcpListeners and call
BeginAcceptTcpClient on each of them.

Where are you having difficulties?

Jon
Jun 27 '08 #2
rome ez wrote:
I am trying to write a vb.net socket application which listens for clients on two ports simultaneously. Is it possible to do so and how can this be done.

Please help.
If you can do it with one, you can do it with two. You instantiate a socket (or
more likely a TcpListener), start it listening. Then repeat.

Typically there is some kind of while loop involved with listening for client
connections. So my personal approach would be to create a class which manages
each socket within its own thread. (A plus which may or may not matter to you
is that you then have the option within your loop to use the simple synchronous
methods which block immediately, such as AcceptSocket().) But what have you
actually tried that is not working and where does the difficulty occur?

(This is not a VB news group, however. Examples you get here will most likely
be in C#. If your problem is syntax related you might consider moving to a VB
group.)

Hope this helps,
-rick-
Jun 27 '08 #3
rome ez wrote:
I am trying to write a vb.net socket application which listens for
clients on two ports simultaneously. Is it possible to do so and how
can this be done.
Obviously that is possible.

The easiest approach is possible just two threads each listening
on one port.

Arne
Jun 27 '08 #4
On Jun 26, 6:33*am, rome ez wrote:
I am trying to write a vb.net socket application which listens for clients on two ports simultaneously. Is it possible to do so and how can this be done.

Please help.
Hi,

This is a C# NG, you should ask VB question in the correct group.

Yes, you can do it, just create two threads with the correct port
number,
Each connection should also generate a new thread, this will let you
have multiple clients for a port at the same time
Jun 27 '08 #5
On Thu, 26 Jun 2008 03:33:33 -0700, rome <ezwrote:
I am trying to write a vb.net socket application which listens for
clients on two ports simultaneously. Is it possible to do so and how can
this be done.
In addition to all of the other replies (which all accurately explain that
dedicating a single thread to each listening socket, plus one thread per
connection), I will point out that the "simplest approach" is only
suitable for relatively small numbers of listeners and connections. Once
you get into the hundreds of connections, you'll want to switch to
something more efficient, which in .NET is basically the asynchronous
methods (i.e. the methods that start with "Begin..." and "End...")

Pete
Jun 27 '08 #6

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

Similar topics

1
by: Jim Kipp | last post by:
Hi I am writing a simple server to monitor ports. The problem is I don't know how to make it listen on multiple ports. It creates the first socket, listens, than accepts and of course the accept...
5
by: lazydb2dba | last post by:
I would like to know if there is any reason that a connection port is not listening. I've found the following message in my db2diag.log DIA3003E Error encountered in "TCPIP" protocol support....
3
by: ssantamariagarcia | last post by:
I am trying to program a server in C for UNIX to get a kind of "bridge" between the clients of a port A and the clients of a port B. For that, I create 2 processes: one that listen the requests of...
6
by: kai | last post by:
Hi, I was tring to run an example (HelloWorld.aspx) from MSPrss book, I get this message: "ASP.NET Development Server faild to start listening port 1034. Error message: An attempt was made...
7
by: Matt | last post by:
I have approximately 5 instances on my test server that are identical to my prod server. On the prod server, when I look at the services file, there is a single entry per instance and everything...
3
by: tshad | last post by:
I have been trying to run IIS and Apache Tomcat on the same Server using the same Port (80 for http and 443 for https). I am trying to do this by using multiple IP address on the same Nic card. ...
1
by: jcprince | last post by:
Hi Not sure I can do what I'm trying to do without using a 3rd party component like Dart. I need to build a windows service to create a socket connection on an IBM mainframe using an IP and port...
5
by: =?Utf-8?B?SmVzc2VlIEhvbG1lcw==?= | last post by:
I'm not sure I'm going about this the right away, and I've attempted to search every online topic that I can which makes me think this is not possible or I'm simple coding this incorrectly. What...
27
by: cmdolcet69 | last post by:
Can anyone tell me if its possible to do multiple event args in vb.net?
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
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,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
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,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

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.