VS 2008 - Properly Closing TCPClient So Server Does Not Crash

Jan 27, 2011

I have a simple tcpclient/server messenger running. Everything works great, except for when a client exits the software. When someone exits, is crashes the server with various exceptions and the server has to be restarted, as well as the clients. What I am looking for is a way to properly "log out" a client BUT leave any other connected client on so that is no break in the chat. Then the person that logged out or a new person can join back in whenever they choose.

CLIENT
''CHAT SERVICE
Dim clientSocket As New System.Net.Sockets.TcpClient()
Dim serverStream As NetworkStream
Dim readData As String
Dim infiniteCounter As Integer
[Code] .....

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VS 2008 Application Not Closing Properly Out Of Memory Error, Using Datagridviews

Apr 19, 2011

Have been running this application on 8 PCs since January.My application uses variations of this

Dim Artist4_TBD As New DataView(Me.SSPE_InterCOMM1DataSet.SSPE_ArtScheduler)

[Code]...

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VS 2008 TCPClient/Server Reverse Connection?

Apr 21, 2009

I have herd that a new type (or old type) of connection when the server connects to the client. Is it really possible to do such a thing with mulit-Servers trying to connect to one client.How would I make one like that O.o.

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VS 2008 What Are Basics To Creating A Tcpclient / Server

Sep 8, 2009

What are the basics to creating a tcpclient / server?

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VS 2008 Create A Client / Server Chatroom Using TCPClient In Visual Basic

Jan 6, 2010

However I have hit a massive brick wall with my program. My program that I'm trying (can't emphasis this word the importance of that word) to create a Client/Server chatroom using TCPClient in Visual Basic. So far I can get my client to speak to my server. However, i'm trying to get the returned data to display in a listbox which never happened, i then tried a label, which again never happened then a text box which I'm sure you can figure out how that went! I'm not great at networking programmers nor am I not bad I'm terrible but duty calls when it comes to projects.

The code I currently have was mostly taken from the net but when I have the program fully work and I understand how the software works I intend to heavily modify for it to suit the needs of what I need to achieve. where I can get my client to display the data from the server that I have already sent to the server (which displays successfully within the server).

[Code].....

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Ado.net - Properly Closing Adodb Connections

Apr 19, 2011

in vb.net, there are some applications that use adodb to access a mysql server.

[Code]...

re writing these functions is a big task - and I am not interested in doing it unless absolutely needed. Here is my problem though. even if the connection is closed (and i have stepped through the code, it closes) The connection is still visible on the sql server in a sleep state why? and how can i make sure that the connection is closed.

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Closing Excel Interop App Properly In .net

Feb 25, 2011

I am having issues using interop with office excel in .net. I have tried a lot of things to close the excel application, workbook and worksheets i create to use in my program but i always notice the excel.exe still in memory. I have even tried forcing the garbage collector,

[Code]...

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File Transfer Tcpclient / Server

Nov 27, 2009

How would i send different types (.png/.bmg/.mp3) of file over a tcpconnection (server / client)

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.net - Difference Between New TcpClient(MachineName, Port) And New TcpClient(new IPEndpoint?

Mar 31, 2011

I have a .Net program that has to run on a cluster of server 2008. To find out the right IP I resolve the dns by GetHostEntry(VarDefinedInfConfig).AddressList(0)

but when I am converting my old code (this code picks the wrong IP) dns.GetHostName().AddressList(0) => this returns a virtual IP and not the right one.So I changed my TcpListener to (dns is parameter from config)Dim listener As TcpListener = New TcpListener(New IPEndPoint(Net.Dns.GetHostEntry(dns).AddressList(0), 8001))
listener.Start()

[Code]...

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Tcpclient - Code To Connect To An SMS Server To Send Sms To Mobile Phones

Jun 23, 2011

Am using this code to connect to an SMS server to send sms to mobile phones but am getting stucked at the the bold like below:

[CODE]:.....................

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Making Program To Watch For Server Crash?

Jun 22, 2010

i have been trying to make a program that should restart my server if it crashes. Just some few problems... it won't work.[code]....My problem is that when it notices the program runs, it won't do the process again, and just stop watching for the server crash.

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Multithread Chat Server Side Crash

May 18, 2011

The server connects, the clients connect, one client sends a message to the server, and the server broadcasts it to the other clients. But what I want to do now is to also have the server communicate with the clients. But when I click on the server form, it freezes, and I cant do nothing.

I think this is because of me not creating a thread for the communication(I saw this on another forum), but I dont know how to do that. I copied basically all the chat program code from a site, and I dont know much of sockets and what not.

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Multithread Chat Server Side Crash?

May 18, 2011

i'm doing a chat for a project, and it works like this. The server connects, the clients connect, one client sends a message to the server, and the server broadcasts it to the other clients. But what I want to do now is to also have the server communicate with the clients. But when I click on the server form, it freezes, and I cant do nothing. I think this is because of me not creating a thread for the communication(I saw this on another forum), but I dont know how to do that. I copied basically all the chat program code from a site, and I dont know much of sockets and what not.

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Service Application Causing Server Crash?

Aug 31, 2010

I created a windows application service that runs every 20 seconds to collect data from avaya cms and then dump it into a database. I did this using a timer. Since I had to have access to the clipboard to get the data and parse it, I had to be in STA. Unfortunately,just putting the STA before the Main() (or any other sub) did not keep the service in single thread mode. So I had to create a new thread and join it like so:

Public Class CMS
Protected Overrides Sub OnStart(ByVal args() As String)
Timer1.Enabled = True
Timer1.Start()

[code]....

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VS 2008 Closing All Forms When Program Closes Vs. Closing All But Main Form

Jun 4, 2010

Dim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm

The above code is what I used in VB6 to close all forms associated with my programs before my program closed. I have been searching for information on how to make sure all forms are closed when closing a VB2008 program.

I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.

Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?

Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?

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Emails Going To Recepients Outside The Exchange Server Domain Crash The Program?

Mar 17, 2011

I've written a program that writes and sends spreadsheet attachments to our customers. Because our customers are outside the domain of the Ex. Server when it gets to the smtp.Send(oMsg) statement (see below)the program crashes.I can use a gmail account without incident but that's less than perfect.

Private
Sub Send_EmailMessageExchange(ByVal
_from As[code]......

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TcpClient.Connect With Proxy Server - Conncect - Send - Recive Data Using Tcp Connection With Specific Internet Service

Nov 4, 2011

I found similar forum thread [URL], but he don't have answers. How I can conncect | send | recive data using tcp connection with specific internet service (not web).

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TCP Data Arrival Function - No Server Response The Program Starts To Crash And Doesn't Work

Dec 11, 2009

Im using TCP cliente to connect and receive data from my server. To read received data im using this code:

[Code]...

It works fine when server response is detected but when there is no connection or there is no server respone the program starts to crash and doesn't work, so i have to break the debuggind process.

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VS 2008 TcpClient Eating Up CPU?

Oct 2, 2009

I've been working on a program where clients will send short messages to a server.[URL]

On the server side, this code is running to check for incomming messages:

Private mClient As System.Net.Sockets.TcpClient
...
Do
bytesRead = mClient.GetStream.Read(readBuffer, 0, BYTES_TO_READ)

[Code].....

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VS 2008 Tcpclient Run Command

Apr 21, 2009

is there a way to send a command to start a prog on the tcpclient side.

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May 30, 2010

I have many Listviews in my Form and Im retrieving stored procedures to populates my Listviews. Is it necassary to close the connection to SQL Server once I have finished populating my Listviews?The angle which im coming from is that every 30 seconds or so I need to re-populate my Listviews with the latest cut of data from SQL Server therefor Im probably going to slow down my application if it has to connect to SQL Server every 30 seconds to get the latest cut of data... instead of keeping the connection to the SQL Server Stored Procedure live so that I can use some sort of method to refresh the data?

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.NET Response.Redirect Not Working Properly On New Server?

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VS 2008 Know When A TcpClient Disconnects - Event?

Aug 31, 2010

I need to know when a TcpClient disconnects so I can properly free up the socket and process anything in my program that needs to happen when a client disconnects.

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VS 2008 Specify An IP Address For TcpClient To Use Through Lans

May 17, 2011

During development, we usually use localhost as the hostname, like the following

Dim serverListener As New TcpClient("localhost", 8585)

I want the user to be able to enter their IP address via a TextBox instead, like

Dim serverListener As New TcpClient(textbox1.text, 8585)

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VS 2008 TCPClient Connection State?

Feb 5, 2012

Is there a way to time out the connection? And loop to retry until it can connect?

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Error Is "socket.exception" / Number Of Server's CRASH In On Day More Than 10 Time ?

May 26, 2009

i'm using socket programming in vb.net 2005 and make a Server/Client windows application and it used in the network to multi user chat server and havent error and it work , but one BUG in server app : the Server app. work currently until the number of clients more than 30 and then it crashed . and error is "socket.exception" . now tell me what to do ??? it's very very important to me because the number of server's CRASH in on day more than 10 time and i end it and then run again and it's not good for my job .

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VS 2008 - Make A TCPClient And Be A TCPServer Too At A The Same Time?

Apr 23, 2009

Can anyone tell me how to make make a TCPClient and be a TCPServer too at a the same time

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[2008] Use The Tcplistener And Tcpclient Classes : Remove Whitespace?

Feb 2, 2009

I am trying to learn how to use the tcplistener and tcpclient classes. While I am attempting to compare something that is sent from the client to the server it seems that it adds a bunch of spaces, the reason I know that is if I write to the console what was sent it adds a bunch of spaces at the end. Is there anyway to get rid of it and just get the original text. I tried trim() but that didn't seem to work but I could have been using it improperly.

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VS 2008 Crash On Save

Jul 20, 2010

whenever I save anything in it, VS crashes it doesn't seem to matter what file I save in any of the projects within.It also seems to actually save all the files; just crashes when it's done is my guess...

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VS 2008 W2000 Crash?

Feb 16, 2010

All of a sudden my exe crashes before I even get to see the first form. This seems to only happen on Windows 2000 PCs.

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