Could anyone give me the prequisites needed for a LAN Instant Messaging Application?And then, if possible, a step-by-step explanation of how this is accomplished, or a link to a good tutorial?
View 3 RepliesI have a final year project to do..i want to create p2p instant messaging using udp. Can anyone guide me step by step how to create this application..many code can be find via internet, but i dont know how to start..and my coding knowledge is average.
View 2 RepliesI need to incorporate a private messaging system. I have done some research but do not know what to use. the system needs to be the following.
both a client and server
Be as instant as possible (not sure but if the server could push out the message to the client this would stop a lot of traffic from client software having to connect and check for messages when there is no to be collected).
Be able to work both over the local area network and the internet.
Be able to store messages and push them out to the user when the user comes back online.
Be able to transmit both plain text and html.
I am in the process of developing a messaging framework for a windows application that sends messages to a java application. To be precise when the win app wants to send a message it simply drops the message in a common database table which will be picked up by the java app. The windows application is deployed across 10 application servers (10 instances) over citrix for load balancing.Each instance of the application is capable of sending a message to the java application and each of these messages should have a unique id. From my end I need to make sure every message generated has to carry a unique id so that they can be identified when necessary. All the messages can be cleared every day or two.i am not quite sure about a best method of achieving this. Initially I wanted to create a static method that serves the next available id (incrementing the last id by 1). But this approach willn't guarantee unique number as the application starts only when at least one user is logged on. For e.g .On one server the app starts when a user logs in, he then sends a message and then the application stops when that user logs off. So when a next request for the app comes to that server a new instance will be started.
View 3 RepliesI have a vb.net (VS 2005) application which downloads files from my webserver and shows its contents to user. And I make files at my end and upload files to webserver so that the application and download & process it. This happens at fixed intervals. Now I intent to send an instant alert (or message) to users who are using that application. For example: If I type a message and send "Hello everyone" then all those people who are currently using that product should get a popup with this message. My webserver is a hosted on a unix based system. It enables me to show html content and post files & stuff online.
[Code]...
Im currently writing an application for our call center to use and would like it to have messaging functionality so that team leaders can send a message to the individuals whilst they are on the phone.
I have used a couple of tutorials around the web, but they differ to what i actually require. They all seem based around the whole "client must connect first" thing, is this really necessary? I just need each user to be a "server" constanly listening to any message recieve on a specific port, and display it in a popup when one is.
At the moment the code i have sort of works, but its a bit flakey and doesnt handle the initial connection/final disconnect very well.
Client program (team leaders console):
Form:
Imports System.Net
Imports System.Net.Sockets
[CODE]...
I have a project to do in Visual Basic.My problem is that the outcome is always wrong (ex. instead of 2011 it gives 2000). And i cannot set as Desired unit the Inch(1) or feet(3), it gives the Infinity error. And if i put as Original and Desired unit the inch(1), the outcome is "Not a Number".[code]
View 2 RepliesMy question now is how can i add a screen where the user must enter a product key before he/she can use my program?
View 4 RepliesI have an application I have developed which works great on individual PC's. However I've had some interest from a few customers that asked if I have a network version for site licencing.If my app did not save any data or write any reg entries, this might have been ok. But it does to the local computer. I also built in my own copy protection and trial function that stores data in the registry on the local computer.What would I need to do to enable my application to run on a server/network share, so that the only a serial number needed is for the server?
View 3 RepliesWe have a Message broker application in Java which accepts messages(XML). It validates the XML against XSD and calls a .net Webservice and passes the validated XML.We have a requirement to do the same in .net. Do we have any API's to do this one. I am looking for a system that takes care of logging in case of errors or some kind of activity log. Is Windows workflow foundation meant to do this kind of task?
View 3 RepliesI put it in Communications.For My programming class at school we are required to have made a program. So I decided to make a LAN messaging program which uses VB and Microsoft Winsock Control 6.0. Im quite new and noob at using VB so i'm using a tut here, url... to make the base program.As you can see if you've read it, he uses Microsoft Visual Basic 6.0, while I use Microsoft Visual Basic 2008 Express Edition.
View 3 RepliesI've created an application where our clients can have access to our program by logging in. It uses our database for most information. I want to implement a richtextbox where it saves notes but i don't know if i should be saving that information as a file or what. Also I also have an application that handles everything that deals with our clients I also want to implement a messaging system that can leave a message to the client upon opening the application if they are missing any information that we require. Can someone point me the right direction on where to learn about this.
View 2 RepliesI Have a bit of a problem..For some reason visual studio says there's an error--it reads:Statement is not valid in a namespace..I can't figure out how to fix it. This is what my coded looks like and there's a blue squiggly line on the first two lines that start with Private Sub:Private Sub btnPlay_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPlay.Click.[code]
View 2 RepliesI am trying to use MessageQueues to notify users of an application of data changes using the Multicast feature, but can't get it to work : the workstation that sends the message does receive it, but none of the other running workstations seem to catch the sent message.Sending messages is done as follows :
Dim sendQueue As New Messaging.MessageQueue("FormatName:MULTICAST=234.1.1.1:8001")
Dim message As New Messaging.Message("message body...")
sendQueue.Send(message)
And receiving them :
Dim receiveQueue As New Messaging.MessageQueue(".private$myQ")
receiveQueue.MulticastAddress = "234.1.1.1:8001"
receiveQueue.BeginReceive()
[code]....
So I'm obviously missing something, and I can't seem to find any good ressources on multicasting with MSMQ 3.0 in .NET.Also, what is not clear is wether I should use a local queue per workstation, or one single remote queue on a server to multicast messages ? And does using the receive method on multicast messages purge them from the queue ?On a side note, all workstations are on the same subnet, and all have MSMQ 3.0 installed.
Despite what the Queue properties dialog says, permissions are NOT totally ignored on unauthenticated queues, at least when using multicasting. If you want your queue to receive multicast messages, it must give to 'ANONYMOUS_LOGON' the right to 'Send messages'. Otherwise, multicast messages are just discarded without any notice in event logs or whatsoever (unless I missed something).
On Win7 stations (XP stations seem to do fine, which is what pointed me to the actual problem), queues created through code do not have such permissions, and hence must be manually set after creating the queue :
Dim msgQ = Messaging.MessageQueue.Create(queueName)
msgQ.SetPermissions("ANONYMOUS LOGON",
Messaging.MessageQueueAccessRights.WriteMessage)
It would seem that internally, MSMQ uses that account to write multicast messages to unauthenticated queues.
I am trying to send a query to a device over http with the url:
[code...]
What I want to do is retreive this xml file over http and save it with my VB.NET application. To do
that I am trying the following function, and it works to retreive the page source for normal web
sites, but it fails when trying to retreive this particular page.
[code...]
I think that the problem is that the code is counting own a present length in the header, which is
not the case for a dynamically created page. (i.e. you dont know the length until you are done) As
such, the code should be written to read the entire reply.
I have instant messenger that I have built its working great with the assistance of a few of you in this great forum..Now I would like to enhance it alittle more and have not been able to get it to work. So here I am asking you out there again for some help. I want each user that logs in to have a different color font for there messages. I believe it would have to go in the recieve messages from server part of the code. Can you please assist with the code and where exactly I would put it. The code below is for the client side there is also a sever side code not provided unless you need it for this project. [code]
View 3 RepliesThis is the first time I have used this messaging library and used some example code to implement it. The first time I ran it it worked perfectly but I abruptly stopped the code since my parsing method seemed wrong. So when I restarted it, the code freezes at the following line:
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I am trying to SendMessage to an app called 'Signal threads' - a test app which sends out a message called TV1_Threads, and listens for a reply. I have shown the values of each variable in the commented areas.
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How to apply databind, so that the recent updated value will be displyed instantly, as i press update button ?
Dim cmd As New Data.SqlClient.SqlCommand
Dim con As New Data.SqlClient.SqlConnection(constr)
Try
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I am manually entering IPs still as the IP variable.
My error is occurring within the RecieveData() method near the bottom and has something to do with threading.
The message is getting through, but will not display in the rich text box I've made to display it in.[code]...
One of the companies I support has a group of people on an isolated network. No access outside their subnet at all. They are on multiple floors and have asked if they can get something like Office Communicator, they don't have email and are tired of making phone calls every 5 seconds. Only there is no budget for Office Communications Server, they are cheap. I can't find any instant messenger programs that connect two computer directly so I thought I would write my own, seems like it would be fun. All the samples I have found on here are more like chats then direct communication between two computers.
View 4 RepliesHow would I go about delaying an otherwise instant process... (With a timer). I've been playing around with it for a while, and cant get it...
View 3 RepliesI'm looking into making just a simple Instant Messenger that will be accessed through the Login program i just made.I'm having trouble just creating the APP window at the moment. I get an eror when i try to add a message queue to it so help with this will.This is just going to be a simple Instant IM like program connected between two or more computers.Does anyone know about a source for this out there- or how would i go about codeing this?
View 2 RepliesHow would i start to go about creating an instant messenger?I start with MDI Child Form. But how would i get the messages to be sent instantly? And over what ?
View 4 RepliesHow to captures(keystrokes) instant messages of msn live messenger.How to captures(keystrokes)form live conversion of msn in vb.net.how to create the txtfile of that capture keystrokes of that instant messeges og live messenger of MSN.
View 2 RepliesI have a vb.net (VS 2005) application which downloads files from my webserver and shows its contents to user. And I make files at my end and upload files to webserver so that the application and download & process it. This happens at fixed intervals. Now I intent to send an instant alert to users who are using that application. For example: If I type a message and send "Hello everyone" then all those people who are currently using that product should get a popup with this message. My webserver is a hosted on a unix based system. It enables me to show html content and post files & stuff online. In order to achieve my goal of sending an alert which users should get immediately what do I need to do?
View 6 RepliesHow to captures instant messeges of msn in vb.net windows application. or how to captures the live chatting of msn in vb.net windows application
View 2 RepliesHow to captures instant messages of msn live messenger.How to captures(keystrokes)form live conversion of msn in vb.net.how to create the txtfile of that capture keystrokes of that instant messeges of live messenger MSN.
View 1 RepliesHow to captures instant messages of msn live messenger.How to captures(keystrokes)form live conversion of msn in vb.net.how to create the txtfile of that capture keystrokes of that instant messeges og live messenger of MSN.
View 1 RepliesAnd i'm trying to start a Instant Messenger/Social Network like XFire, so I would like to know questions like,How would I get started? I know and like VB but is that too simple, i'm learning C#/C++ also Would I need to host a server?
I would like it be able to do:Instant Messanging A home screen with you to able to launch programs Be able to check if a user is offline or online and what game they are playing A buddy system