Listening To UDP Broadcast With Threads?
Mar 11, 2009
I'm broadcasting a simple message to ..*.255 (changing to 255 the last part of my ip) and i'm trying to listen to it. the code returns no error but i'm not receiving anything. In wireshark I can see the broacast is sent correctly, but with a different port each time (I don't know if that's a big deal).
Here's some parts of my code.
Private Sub connect()
setip()
btnsend.Enabled = True
btndisconnect.Enabled = True
btnconnect.Enabled = False
receive()
[Code] .....
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Oct 19, 2011
I just had a new, last-minute idea on to take on a task, so I am running to StackExchange for quick help.
What I want to do is execute a series of methods right in a row, each in their own threads. I want the application to wait until all of these threads are completed, after which the program will resume. It also has to use managed threading (thread pool).
What quick examples could you provide to help me along the way? If it's too complex, what things should I know about so that I can Google it on my own?
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Dec 30, 2009
I have a main thread which is designed to be a batch processor - it spawns a series of 'child' threads from a loop (which can vary in terms of the no of items) - see below
[Code]...
However, each of the 'child' threads could take anywhere from milliseconds to about a minute to process - depending on the complexity of each calculation. There may also be a large number of child threads - e.g 100s. Creating large numbers of child threads is not efficient. I therefore want some way to effectively queue each child thread (and cancel if the process is taking too long to complete). Autoevents seems like one way of doing this, but the only examples I can find seem to assume there are two different processes on seperate threads, not one process being repeated.
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Jul 16, 2011
I was wondering if there was a method of broadcasting an file over LAN, my reason for asking is because I am trying to make a LAN file sharing program, so that I can share files over the network easily.
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Oct 24, 2009
Alright im trying to make on application broadcast a message(Hello<Split>Whats Sup?<Split2>O.o HI).How would i make my reader application read that and put Hello one text box Whats Sup? in textbox2 and O.o HI in textbox3.
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May 18, 2010
I have developed a chat application using wcf duplex, use for WAN networkIn my list chatting, have max 1000 clients online currently.Now i want to send a message to all at once. So i dont know how to do it, how to send broadcast ?
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Apr 23, 2011
i have made media player for my own i need code that broadcast video over Lan network "clintes/server "as fast as can.
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Jun 1, 2011
Dear experts. i want to change "hide Extension for known Fils type" and then Refresh Explorer for effects this change. Change Hide File Extension Code:
[Code]...
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Jun 2, 2011
I find out a solution that can change registry and Broad cast changes to Desktop and Windows Explorer.
Code for Change Show/Hide Files Extension[code]...
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May 28, 2012
explain to me how listening to ARP requests in VB.net or C #?
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Apr 29, 2009
I have a program running in many machines in a network. The program reads a Sql database, and there's a table showing one table in a DataGridView in each computer from the same DB stored on the server. The same table in all the computers. What I want to do is, every time one computer changes something in the table, to update every table in all the computers.
Every program writes an entry in the database to know that they are connected to the DB. So any program can know who the other computers are.
How can all the computers know that there was a change in the table? (the idea is the get the changes quickly)
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Nov 1, 2009
I have some experience creating programs that use tcp to transport information from a server computer to a client computer and vise versa. However, I am unable to create udp server/client programs with visual basic.net . My goal is to be able to set up a connection with several computers that can communicate with eachother.Kevin Schaefer "The world is round and the place which may seem like the end may also be the beginning"
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Apr 15, 2010
I'm listening to a something coming in on a serialport every second. how to start an event if there is nothing coming in all of a sudden.
The way I imagine it is on a timer.
Sub timer_tick
if serialport1.readline = "a" then
do something, its ok
[Code].....
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Sep 21, 2011
I am trying to listen to the COM3 port and display the output in the TextBox.If I understood correctly I will have to implement this by using eventhandlers, delegates.I tried following these articles:
[URL]
And this is the code I came up with...Unfortunately it doesn't display anything. App just starts display "True" and no data is being displayed.I am monitoring Arduino platform which I know is sending data constantly.
Imports System.IO.Ports
Imports System.Text
Public Class ArduinoSerial
[code]....
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Jul 23, 2010
I want to be able to kinda like have a timer that will get an image off my Hard Drive, and upload it online, so that all I'd have to do is download the image, even if it's been written over, I want to be able to broadcast an image from my hard drive, using only my IP Address.
127.0.0.1 is my IP Address.8888 is the port.Somthing like if you were to goto http://127.0.0.1:8888/update.html or Update.Jpg If YOU were to go to this address on your machine, you could see the image... Of coarse, it will probably be an image of which I was able to get from Printing my Screen image, and then saving it as like C:Test.Jpg, but the Timer would get my Desktop Image, or Print My Screen and Save it and Overwrite the Test.jpg image on the C Drive... Ya know what I'm talking about?
[Code]...
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Sep 21, 2011
I am trying to listen to the COM3 port and display the output in the TextBox. If I understood correctly I will have to implement this by using eventhandlers, delegates. I tried following these articles:
[URL]
And this is the code I came up with... Unfortunately it doesn't display anything. App just starts display "True" and no data is being displayed. I am monitoring Arduino platform which I know is sending data constantly.
Code:
Imports System.IO.Ports
Imports System.Text
Public Class ArduinoSerial
[code].....
I am really new into the vb.net. I am sure there are some horrible mistakes with this code but I am kind of stuck for the past 2 days on this one.
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Jul 13, 2010
i am learning to create a port listening software in vb.net?how to do "open and listen to tcp/ip port"
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Mar 1, 2010
Listening for an event from one program and capture it on another?is this possible, I'm asuming I would want to send a system wide event so I could capture it.My scenarioLet�s say I have this separate Splash animation (a series of png/bmp etc) but instead of having them in the main program itself I want them separate in a DLL/EXE.So how can I raise an event (probably system wide event I would imagine) letting the Main program know that the Splash DLL/EXE has finished it animation so the main app can continue?
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Apr 13, 2009
I am trying to create a windows service (visual basic 2005) that will listen for a UDbroadcast. If it detects the broadcast it then run an external program. I havesuccessfully created the server and client programs using basic forms. I used the code from this forum
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Jul 19, 2010
What is the code to turn listening on and off. Speech Recognition with VB 2008.
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May 20, 2012
Check listening ports on remote machine
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Dec 24, 2009
I have another question about my customizable Menu/Tool/StatusStrip control.
I have three controls called CustomizableMenuStrip, CustomizableToolStrip and CustomizableStatusStrip. Each of those controls has a property called Appearance, which accepts an instance of a component called AppearanceControl.
The AppearanceControl component basically exposes all color properties for the customizable strips, so the user can edit them, and more importantly exposes a ToolStripProfessionalRenderer which the three strips have to use. This way the three strips are rendered with the colors the user chooses in the AppearanceControl.
Now, I'm wondering if I'm doing things the right way. When any of the color properties in the AppearanceControl has changed, all the strips that use that particular AppearanceControl should have their Renderer set again, and should be invalidated.
I figured the easiest way (and probably the only way?) to go about this was to have the AppearanceControl raise an event (AppearanceChanged), which the three strip controls listen for. When that event is raised, the strip controls can set their Renderer to the Renderer that the AppearanceControl exposes, and then invalidate themselves.
[Code].....
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Jan 1, 2010
Suppose I want to broadcast CTRL+C to my program without using complicated code (accessing Windows API) to do it.
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Feb 21, 2011
I need to build a Windows Service in VB.net under Visual Studio 2003.This Windows service should read the flat file (Huge file of about a million records) from the local folder and upload it to the corresponding database table.This should be done in Rollback mode(Database transaction).While transferring data to table, the service should also be listening to additional client requests.So, if in between client requests for a cancel operation, then the service should rollback the transactions and give feedback to the client. This windows service also keeps writing continuously to two log files about the status and error records. My client is ASPX page (A website). how to organize and achieve this functionality in a windows service(Processing and listening for additional client requests simultaneously. Ex. Cancellation request).
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Sep 30, 2010
I'm writing a remote desktop software that starts a connection in reverse mode, using RDP API. My problem is that I try to setup the port that the listening socket may use, but it seems not working: it uses always a random port. [Code] The problem is the seems PortId is ignored: my connection string reports other ports number, and the incoming socket is open on port different from 4000.
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Jun 8, 2009
How hard is make listening connection? Game? Program? Example: Server where people can connect? Just ready opened connection example where another program connects or something? (Console where you see when people connects and disconnects.....=>)
[Code]...
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Jun 27, 2009
Lets say i got a listview and that listview contains ip and open port, i wan't the form to search open ports and put them in the Right lisview/Column example : messagebox("Ip Found")
Here is what i have a.t.m
CODE:
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Sep 29, 2010
I have recently started playing with sockets, so now i have set up an instant messaging app. it works like it's supposed to however, theres a slight problem. short of arranging for both parties to come online via email or something there's no way for the other person to know that someones waiting for them. So i'm basically looking for a way to send a pop-up message to tell the other dude to get his ass online,is there a way to display a message on a target pc's screen without a client application running and actively listening for an incoming command?
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May 13, 2011
i have 2 application clinet/server the server broadcast media files to client i used tcp/ip protocol the server code is work good but i have a problem in client code i need ineed someone to correct the code .iwll show where the error is in the code note: i call the class in the main form dim a as recive in the starter of the main form class to be gloable .
[Code]...
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Feb 25, 2010
How would i broadcast/specific(one person) a live voice over a tcp connection for my voice chat room im making.
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