Rather than use an Entry name of an existing VPN connection, is it possible to connect to a remote network by creating a temporary connection on the fly by using the remote IP/Host name, username and password?
View 6 Replies
When I to connect to remote host to retrieve sql record...
it execute to few minute will get his error message... but there is already work perfectly and get connected... it loop it a few record only will occur this error...
"Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."
I have a fat VB.NET Winform client that is using the an old asmx style web service. Very often, when I perform query that takes a while or pass a large amt of data to a web service in a dataset, I get the subject error.The error seems to occur in < 1 min, which is far less than the web service timeout value that I have set or the timeout value on the ADO Command object that is performing the query within the web server.It seems to occur whenever I am performing a large query that expects to return a lot of rows or when I am sending up a large amount of data to the web service. For example, it just occurred when I was passing a large dataset to the web server:System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the rem
View 3 RepliesI have an application that copies a file from a network/internet location. I am trying to catch the exception for when the network connection becomes unavailable (or internet goes down). Currently i catch the exception "Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host." which occurs on the bold, underline line below.The issue i have is i try and attempt the operation to continue doing what it was doing by resetting variables and then reassigning them to continue reading the stream but cant get past this error. The only way to go past it is to stop and start the application which is not what im after. [code]
View 1 RepliesBelow error is thrown in a already opened program which connects to different database
A transport-level error has occurred when sending the request to the server.
(provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
Program details: code done using vb.net with MSSQL 2008 as back-end
Two instance of same exe where running simultaneously in same PC but error was thrown only by one instance Program uses both sqlconnection(ADO.NET) and ADODB connection(upgraded from VB6) and the error is thrown by both types of connection. If the error is due to network problem with the server then why few programs work fine? I am not able to trace the reason for this behavior of the program. Can I know why this error occurs and why only in few programs of same instance.
I have created a program that allows me to remotely access computers on my network (not all done by me i found some code online) however i want to modify that program to allow me to connect to computers not on my network. How can i go about doing this? My program consists of a client and a server. When the server runs it listens for the client on the client side i enter the IP address and it connects so i can send remote commands to the remote system.
View 4 RepliesI've came across a little problem with my tcp / ip server. My client can connect to it with 127.0.0.1 ( localhost ), and 192.168.0.X, but every remote connection fails to connect.
Here's the connection rituals:
Server
listener = New System.Net.Sockets.TcpListener(System.Net.IPAddress.Any, Port)
listener.Start()
listenThread = New System.Threading.Thread(AddressOf doListen)
listenThread.IsBackground = True
listenThread.Start()
Client
client = New System.Net.Sockets.TcpClient(IP, Port)
client.GetStream.BeginRead(readBuffer, 0, BYTES_TO_READ, AddressOf DoRead, Nothing)
I have a tcp server that uses TCPListener and the async method BeginAcceptTCPClient:
Imports System.Net.Sockets
Imports System.Threading
Imports System.Net
Public Class TCPServer
[Code]...
My problem is that infrequently, I get an exception in the HandleAsyncConnection method:"An existing connection was forcibly closed by the remote host" right at the EndAcceptTCPClient method. At this point, the TCPListener seems to stop listening. The problem is that I can't test this easily, as it only happens on a remote test VM and only once every 24 hours or so. If I knew how to recreate the error with a test client, I would be able to figure this out. Wireshark shows a reset [RST] packet being sent at around the time of the exception. So I either need to know how to handle the exception, or how to recreate the problem with a test client.
I'm trying to develop a windows application where i can get connected to remote server and look for process state going in remote server.We have many remote servers where automatic installation of software going on. We have an xml file(installstatus.xml) where it tells us at what stage the installation is (Example : Inprogress , Completed, Failed.)
So our aim is to develop a windows application where i can get connected to that servers and look for their installation status(may be we can use installstatus.xml to look for installation status). Every time i connect to a server, the server information should get stored in XML file(i want to create a xml file where all the servers list i connect to should get stored)
The UI at left side should will have list of servers i can connect to. When i get connected to server, at right side of UI, i want to display the status of installation (In progress, failed , completed).
I've been trying for a long time to do what seems to be the most simplest of things..I have a remote host and I need to know if certain posts on that host are open or closed.Many examples on the net that I have found arent complete, and because I havent worked with VB.net for long I dont knowhow to complete them.Here is my code:: The issue is with this it tell me the target port is always closed, when I know that it is open.Code:Dim host As String = "www.google.com" Dim port As Integer = 80 Dim addr As IPAddress =CType(Dns.GetHostAddresses(host)(0), IPAddress) Try Dim tcpList As New TcpListener(addr, port)tcpList.Start() Catch sx As SocketException MessageBox.Show("port is closed") End TryA friend of mine suggested using WinSock.. I've not dealt with it before so I don't know what he's on about.
View 2 RepliesDoes someone know what api funtion to use for getting remote host name right now i use System.Net.Dns.GetHostName and the nbtstat -a function, but still have some computers that i dont get their host name but i do get their mac with send arp...so how cna i get their host names with an API call..
This is my code for dns.hostname ..
vb.net Dim myIPs3 As System.Net.IPHostEntry = Dns.GetHostEntry(hello)
Dim newhost3 As String = myIPs3.HostName
I want to restore an simple .SQL file,
The MySQL Server is Protected with password and is an remote Host
What would be the most quickest way to edit a text file on a remote host?
View 3 RepliesI have created a Windows service that runs on one of our servers. The service lisens to incoming connections on a set socket port, runs a series of WMI queries on the requested computer in a new thread (the socket accepts a string value as input which is the hostname to scan), creates an xml file based on the collected data, and posts it back to a webserver. This works perfectly on all WMI queries, but i have one function that gets all installed software from the requested host using the RegistryKey.OpenRemoteBaseKey method to get all keys from the "SOFTWAREMicrosoftWindowsCurrentVersionUninstall" key on the target host. If the the target machine OS is Window Vista or 7, it returns no values. If i run this code on the target machine it works, but not from the service on a server. The service is installed and runs with full domain administrator rights. I guess this is a permission issue, but i have not found a good solution on how to solve it on the internet. As a workaround i use WMI to get a list of installed software from computers running Vista or 7. The problem with the WMI method is that it's very slow. It takes 10 - 15 seconds just to loop thru all ManagementObjects in the Querycollection. Maybe i could filter the WMI query better before starting the loop ?
[code]...
way to retrieve list/rename hiddne files from the remote host. I need to upload the file to a server and then move it to another directory, but the file after being transfered becomes hidden. If I try to rename it any way I get the dreaded 550 in response. I would hate to move to commad line scripting which at the moment seams to be my only option.
View 4 RepliesHow to remote shutdown a PC in a network using vb .net?
View 5 RepliesI am writing a network diagramming application with SNMP autodiscovery. I can query SNMP devices but I need to be able to differentiate between laptops, servers, and workstations. The only response I recieve is cpu information, os version, and the cpu stepping. Any idea on how to get the type of a remote network device? This might be more a networking question.
View 1 RepliesI want to do a small application that made the broadcast of images from a PC. The idea is to make an application of remote management but without the management part, only with the viewing of images. Anyone know any code already done or any API that helps in the project?
View 8 RepliesI have this partially working but only shows printers for one user, need all local and network printers mapped for ALL users on a remote pc so I can migrate them, I know I need to do some sort of for each method but not sure what will work
[Code]...
I am trying to open a file from a server
I currently have
Dim attachedFilePath As String = "\myservermyshare est.txt"
File.Open(attachedFilePath, FileMode.Open, FileAccess.Read, FileShare.Read)
This does not open a file.
However, if I change the path to be local then there is no issue.
Dim attachedFilePath As String = "c:... est.txt"
So, is there a way to open a file from remote storage?
How can I connect to a database using sql server 2000 and stored in another PC with vb net (still in 1 LAN)?So that PC only stores the database, and another PC store the user interface and business logic.Is it related to the connection strings, on the datasource, we just put the IP address for that remote sql server?
View 3 Replieshow to enable remote database
View 2 Replies* Using windows application i am trying to connecting remote server(PC), for this i have servername,uid/pwd.
View 1 RepliesI am having a small problem with my VB.NET and VC#.net programs. I am creating a spider program in VB.NET which parses a URL and stores data in my database. The list of URL to be parsed are included in my database. Right now the program is working fine as I am using a local database lying on my hard drive, but I want to use database lying on a remote server (ex. [URL]). How do I do that in VB.NET application?
View 1 RepliesWhat is the best way to connect a remote SQLServer via window based application?
View 8 RepliesScenario: I want to develop an application.The application should be able to connect to my remote server and download data to the local disk , while downloading it should check for new files and only download the new ones simultaneously creating the required(new) folders. What am i doing?: The app first checks for internet connection , if available pings the server to check if the server is active.Then it has to download the new files.
Problem: I have no idea how to compare the files in the server with the ones in the local disk.How to download only the new files from the server to the local disk? What am thinking?: If i can create the exact folder structure(hierarchy) in the local disk as it is in the server...than i can download the new files accordingly to folders by maintaining some index file in both server and local disk.
I am able to connect remote MS SQL Server 2005 using vb.net-->
Imports System
Imports System.Data
Imports System.Data.SqlClient
[Code]....
But my app is takes more than 2 second for refresh the data..... Sometimes it getting hanged.
Finally i just want to know if their any method available to connect the remote MS SQL Server Database for faster calculation. Like UDP or Proxy....
I have connected VB.net and mySQL on a the same PC before, but I have no Idea how to connect VB.net to a remote PC(LAN)[code]...
View 12 RepliesIm trying to connect to a remote mysql database, and im having alot of crazy issues, i have checked connectionstrings.com for information, im used to doing this in vb6, but times are changing and im trying to rewrite my apps for vb.net. anyone able to help with the new connection string to get it setup so i can connect to a remote database? i already installed and added mysql.data MSI isntaller on there and its version 6.0.4 i beleive, how can i make this thing connect to the database now?
View 24 Repliesi connect to a remote pc via terminal services, when i print with the Microsoft Office Word i get the print in my local printer fast, but when i try to print with my own application the print take 10 seconds.
I use to print the control PrintDocument.
