Socket.Connect() With A Timeout?
Oct 16, 2009
I'm trying to use a socket to connect a TCP stream. The socket connects no problem if the endpoint has a valid IP associated to it. If I give it an invalid one, the Connect method will sit and block (I want it to) for 10-20 seconds before telling me the remote host timed out. Is there a timeout property I can set so I don't have to wait that long for the connect method? Or is there another way of doing it that does implement a timeout?
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Oct 2, 2011
i need to check if a port is open, apparently i can't ping ports so i need to use sockets, and it seems that there is no option for timeout on the connecting... how can i put a timeout on connect?
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Jan 23, 2011
I'm using sockets to connect to servers and for some strange reason I can't identify, the socket is taking several seconds (5 maybe 6) seconds to connect when using an IP whereas is instant when using a hostname. Here is my code to connect:[code...]
In the above code, server of course is a string. I've tested this with a friend and she's experiencing the same issue and I'd like to get around it as it's sort of annoying..While debugging GetHostEntry is the line that seems to take forever when using an IP.
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Apr 9, 2012
I started to setup a Server and a Client for personal purpose. When I try to connect the Server by a computer inside a shared network, with local IPs, works but when I try to connect an external IP, doesn't work.[code]
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May 3, 2011
I'm not sure if this is a VB.NET error or SQL Server. But I get the above error with following stack trace:
[SqlException (0x80131904): Timeout
expired. The timeout period elapsed
prior to completion of the operation
or the server is not responding.]
System.Data.SqlClient.SqlConnection.OnError(SqlException
[code]....
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May 21, 2011
I wrote a Socket Client which will send the Socket Server some data and get some response from Server. This process will be running once in every 2 seconds.
Now what I need to know is How we can identify the connection lost between Server and Client?
I need this to be implemented in the Client side. If there is no connection then Client should automatically close the connection. Once the connection with the server is available in the next attempt it should connect automatically.
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Oct 15, 2011
Below is my code, but when i send the message thru client socket i receive Specified argument was out of the range of valid values. Parameter name: size
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim serverStream As NetworkStream = clientSocket.GetStream()
Dim outStream As Byte() = _
System.Text.Encoding.ASCII.GetBytes("0800822000000000000004000000000000000920092126012345001")
[CODE]...
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Sep 30, 2011
We have a VB.Net application which works fine in our tests in different Windows XP SP3 machines. However there is one machine in which is displaying this error:
Unable to connect to any of the specified MySQL hosts
Using the mysql command, we can successfully connect to the database. We already checked for any other application or firewall that could be blocking the connection but it seems fine. We also reinstalled the system (no errors during the installation) but the MySQL error message doesn't change.
The system settings are exactly the same as in the other computers. We are using "localhost" as server in the connection string. The "hosts" file has its default values (nothing strange in there).
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Jan 16, 2012
I'm working on an application where I'm using an webcam image. I have code that works when using the built in iSight (It's an Apple running boot camp windows 7) camera. However after installing a second USB powered Microsoft Life Cam I am unable to connect to this second camera. When runnign this code I only ever get one input device:
Private Sub LoadDeviceList()
Dim strName As String = Space(100)
Dim strVer As String = Space(100)
[Code].....
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Apr 19, 2009
I have written some code (VB.net) which simply runs a backup on all required servers and databases in a loop. The code works perfectly, except for the first backup which Timeout's after 30 seconds (even with my Connect Timeout=0).
Everything is written manually for the dataconnection, the connection opens and timeouts on SQLComm.ExecuteNonQuery()
dbConnStr= Data Source='Server';Initial Catalog='Database';Integrated Security=False;User ID=sa;Connect Timeout=0;User Instance=False
[Code]...
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Dec 16, 2011
I am using VB 2005 and need to trap a serial port timeout. I use a standard try/catch block, but if no characters arrive the code still hangs at the ReadByte call. Here is the code:
Try
SerialPort.ReadTimeout = 200
' read timeout of 200 mSecs
thisByte = SerialPort.ReadByte()
[code]....
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Jun 7, 2010
I have written a page with an iFrame that basically cycles through a series of internal pages on our server displaying daily activity for our company. The problem I think is that it sporadically loses its session and redirects back to the login screen to keep losing its session which is the default behavior for anyone on our site trying to access a webpage without being logged in.
I have set the session timeout to 4hrs, the iframe cycles through 6 pages anywhere from 10 seconds to 5 minutes on each, and I have even set the META refresh on the page to refresh every 3 hours. I don't understand what else could possibly stop this page from staying active.
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Sep 2, 2010
Setting timeout on a vb.net webservice.
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Jun 4, 2009
I have to increase timeout period.Following is my code.
Private Function GetConnectionInstance() As SqlConnection
Dim objConn As SqlConnection
Dim strConnection As String
strConnection = ConfigurationSettings.AppSettings("conn")
[code]....
What code i have to add in above to increase timeout period.
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Jun 21, 2010
In this situation, my application can connect to the MSSQL server in one of two ways; via a direct TCP/IP connection (WAN) (IP's filtered using RRAS in 2003 Server) or via a VPN connection. The application will first try to open the connection using the WAN connection string and if it can't, then it tries using the VPN connection string. My issue is, I set the connection timeout to 5 seconds for the first attempt but it's taking way longer than that to return an exception. The order in which I attempt to open the connection doesn't really matter. I have looked at the ConnectionTimeout property after changing the connection string and it does indeed show 5 seconds. It appears that the connection timeout value is being ignored.
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May 25, 2010
We got a legacy vb.net applicaction that was working for years. But all of a sudden it stops working yesterday and gives sql server timeout.
Most part of application gives time out error , one part for example is below code :
CODE:
It was working and now gives time out in command3.ExecuteNonQuery()
Some information : There isnt anything that has been changed on network and the app uses local database. The main issue is that even in development environment it donest work anymore
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Sep 16, 2011
I am facing error with recaptha, timeout.
I have specify all keys and just valid() calpcha function on code behind.
It waits for while and time out.
More over, When doing page.Isvalid() with capcha, it is alway false, what should be the reason?
<recaptcha:RecaptchaControl ID="recaptcha" Theme="white" runat="server" PublicKey="6LdwMMgSAAAAALdraGklD-N1Jfr5Fuxq6gyaJMy7"
PrivateKey="6LdwMMgSAAAAAKV6hOjAHdFURCUZ6oS_NmxF8iaD" />
recaptcha.Validate();
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Jul 17, 2009
am using vb.net 2008 and sql server 2008. I have a search form and when i search at times, I have "Connection Timeout Expired" error.I dispose and close the connection after establishment, but i still get it. tried setting MyConObj.ConnectionTimeout = 0 and it also gives me "Property ConnectionTimeout is ReadOnly.
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Dec 30, 2010
I am looking for the VB.NET code of a very handy little *.bas file I used to use in Visual Basic 6. The file was called timeout.bas and it was the greatest module ever to me. I want to switch to start using VB.NET finally but this single file is holding me back. Trying to use .NET without it is like crippling me. [code]
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Feb 19, 2011
I need to wait for and event within a given period (30s) and then timeout if this time elapse. I am sending a command to a server from a dll, and I need to wait for response before sending another. I want to implement a timeout feature, that why I need to use a timer. I want to use a timer, but don't know how to use it in a DLL.
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Feb 17, 2009
How to set timeout time for Proxies.
i am using
dim w as new webclient
w.proxy= new system.net.webproxy("xxx.xxx.xxx.xxx.:xxx")
most of the time it says unable to connect or it throws any error msgs... when i check those proxy in internet, they seem to work well. only few proxies are working.
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Nov 26, 2010
I have the next code that works with AS400
1.- ConexionODBC = New OdbcConnection("dsn=" & gStrDSNIBS & ";uid=" & gStrIdUsuarioDBIBS & ";pwd=" & gStrPasswordDBIBS & ";")
2.- ConexionODBC.Open()
3.- sQuery = "CALL MIFSTORE.SP_TPVFEE1"
[code]....
The purpouse is to execute a SP, but sometimes the DBA modifies the SP without any notification.When the SP is modified and runs the app, the code freezes in the line 7 but does not return a value nor error, even, after 2 hours it remains in that line, I have set the command.timeout (line 6) but it doesn't work either.how to stop the execution of the SP after a period of time.
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Jun 11, 2011
I am using VB 2010 on a Windows 7 Home Premium PC. I can't get my my smtp code to send an email out. It always comes back with the error:"The operation has timed out"I have both a Google Mail account and a Sky Mail account both of which use the same port but can't get either to work. I have checked my firewall and the smtp port 465 is allowed and I can see the process going through the firewall.I know the mail works fine as I am using Windows Live Mail which sends and receives no problem. The code I am using is below:
Private Sub btnAddAmount_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddAmount.Click
Dim message As New MailMessage
[code].....
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Jan 3, 2011
I'm building a program that has a very basic premise.
For X amount of Objects
Open Conection
Perform Actions
[code].....
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Nov 24, 2009
I'm using sqlbulkcopy to load data into a sql2008 database, and we're getting timeout errors loading larger tables. Some tables which were loading OK are failing since indexes have been added to them. The source data is a Informix datareader. I've tried setting large values in both the connection timeout and the sqlbulkcopy.bulkcopytimeout, but the timeout usually occurs within 60 seconds, well below the timeout values I've set (240 secs). I've tried setting the .bulcopytimeout property to zero but it makes no difference. Very occasionally a load will take place - the last large table to load took 7 minutes. I've reduced the batch size to 500.
The documentation on bulkcopytimeout that I have found does not describe what the property actually means - is it the maximum time to complete the entire copy or to complete one batch or what ?Here's some extracts from my error log - the first shows a successful large table load, follow by timeout failures.
24/11/2009 10:59:01
Level : Information
MISLoad - Starting load from Mach4 to ParagonMIS of all selected tables
[code]....
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Jun 28, 2011
I am connecting to a vendor-supplied Web Service running in our domain and am attempting to execute one of its methods. I am receiving the error below (Timeout Expired) and not sure how to fix it. The server is running SQL Server 2000 (soon to be upgraded!) and I have checked the timeout setting which is set to 0 (unlimited)
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Jun 10, 2010
I have this simple code to test that a DB is ready:
Function testlocalcon() As Boolean
Dim constr As String = _clconstr
Try
Using t As New SqlConnection()
constr = constr & " ; Connect Timeout=1"
[Code] .....
I do not want to execute a query, just to check the connection, but no matter what the time out parameter is ignored.
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Jun 15, 2012
I found the following code on another site that works great for what I need. Is there any way I can add a timeout in this code? I can't figure how to do it.
[Code]...
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Mar 18, 2011
I have a vb10-form that makes connection with a SQL-db. The first time the SQL command is executed perfectly and the records are showed as they should. When I do a refresh (or automatic refresh after 1 min) I get: "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding" The strange thing is that this only happens on one PC, all the other work.
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May 29, 2012
I am trying to connect to my remote MySql Database within Visual Studio using the compact framework.
I can successfully add a data source and preview the data within the IDE so assume that the connection is ok regarding Connection strings and remote access.
However, when I attempt to access the data using any run time control I get the following error when the table is loaded using the .fill method.
MySql.Data.MySqlClient.MySqlException was unhandled
ErrorCode=-2147467259
Message="Unable to connect to any of the specified MySQL hosts."
[Code]....
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