I have a VB.net web service that returns JSON that works fine. Once the response gets to a certain size though, the client browser says that the server has closed the connection and sent no data. This is true using IE, Chrome, or Firefox. The magic size seems to be about 16383 records, or about 1.13MB of data. I know this is slightly large for a web service.
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I am writing a Windows service to import data from CSV files dropped into a directory. One of the steps is to load an XML file with validation rules which I load into a List(Of T). It will pull the data, and then I have it pass the list to a class that monitors the folder and processes the files. After that I clear the list and read in the next file configuration. Now I have noticed that the validation rules aren't matching up and it seems that the list is being passed as a reference type even though the signature is of a value type.Is there anything I can do to get around this?
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So here when I pass it, at first it will have 3 validation rules in the new ImportService class I created, but when I call fields.Clear(), it wipes out the class member of the ImportService class.
I've got a strange problem with a Response.Redirect. I'm using VB.NET with the .NET 2 framework (so VS2005 & SP1).I've got a page that I do a form submit on (that's a proper form method="POST" hard-coded onto the page) and that properly posts me back the page data which is then processed. As part of that processing the system determines if we need to get sent to another URL after processing has been complete. So the request.httpmethod = "POST".
So if the "GotoPage" parameter has a URL specified we then do a response.redirect(URL, false). (False as we want page processing to complete in order to write some timing logs etc).The page correctly redirects but instead of the response having a "GET" as the request.httpmethod it has a "POST" instead Now, we're using our own custom framework so that we use the HTTPRequest method to determine if a page has been posted back or is being "Getted" so the "IsPagePostBack" property doesn't work (that only works when you're using the normal .NET controls and form submissions). In all other instances our code works happily but what might be causing the Request.httpMethod to not be being set correctly ? I've tried doing a response.clear before the redirect in case headers are being written out before hand but to no avail.
I am sending xmlhttp request to a web server with parameter, and wait for the response before I send another request. About 98% the application is working fine, except if the internet speed became suddenly slow or there is a delay from the web server i am dealing with.
here is how I am doing it,
Public _xmlHTTP As New MSXML2.XMLHTTP <-- declared in a module
Function SendRequest
I need help with something it drives me nuts. I have an application which send XML to a web server through a POST method. This part works excellent. But where I have issues is with receiving the standard response from the web server for OK or error. Instead of receiving the actual response, I get the error message" WebException was unhandled. The server committed a protocol violation. Section=ResponseStatusLine" . The response I should receive is in XML format where I have as elements the error result (ok or error), the error number and the error description. Here is the code I have:
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Does someone know If Response.Redirect can be used inside a method of a web service. I'm trying and I get an error. If I use it outside of the web service I have no problems.
View 6 RepliesI had a problem getting a VB.NET web service client to receive the response object from a Java web service.In the process of posting this question someone from another department volunteered some code written for a similar situation.I couldn't find this anywhere on the net so I'm completing my question to help others out.[code]The web service is Apache CXF with some Spring elements mixed in.
View 1 RepliesI am new to the wcf services and soap. Kindly give me an example or demo how to generate a soap request and response using wcf services. I need to use VB.net for this.
View 2 RepliesI have a windows service that utilizes an infinite loop and thread.sleep. The sleep time for the thread is 10 seconds.When the service is initially started AND has work to do (data exist in SQL), it immediately does it's processes. It continues to be responsive and process tasks every 10 seconds as long as it has work to do. If no data is present in SQL for an extended period (i.e. 15-20 minutes) then the service starts responding very slowly. It will eventually pick the data up and process it, but it takes more like 10 minutes instead of 10 seconds.
View 2 RepliesHere's the situation. I'm a Java developer. Another developer in our company wrote a web service for our clients. They wrote the service in Java. They also wrote a demo for creating a client to consume the web service in Java and it works just fine. I've been tasked with creating a web services client in VB.NET to do the same thing. It hasn't been going smoothly. The problem is that the web service requires that you send the username and password in the SOAP header and I can't figure out how to do that in Vb.NET. I looked at the following pages:
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I have a windows application in VB.net that uploads some files to an existing web service. I know that this web service is providing a response back (success or failure), but I have no idea how to view it or save it.
Dim username As String = "username"
Dim pass As String = "pass"
Dim myWeb As New webserviceaddressishere[code].....
how could im set response status in Asp.net Web service method? [code]i want to return 500 status code in response how can i do it ?
View 1 RepliesUnable to get web service response in vb.net
View 1 RepliesI am working on a project in which admin wants to send updates of website via email to all registered users on web site.How to do this.?
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This is the backend code i am using for sending 1 email.How can i use this to send emails in bulk?
I'm building a web service to accept notifications from a company. The company informed me that the service is incorrectly structured and provided me the .asmx of a working web service. It looks like this:
Request:
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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I have a Client/ server application where the Server is in java and Client is in Vb.net.When i send large string from client to server am not receiving complete text.code attached below.
client-- VB.net-
Try
Dim clientSocket As New System.Net.Sockets.TcpClient()
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I am trying to send the fax from my windows service which is written in vb.net. I am facing problem with windows 7 and windows 2008 Server. It works fine with Windows XP. Fax is not getting visible in fax console's outbox. I saw three files in "C:ProgramDataMicrosoftWindows NTMSFaxQueue" for every sent fax but this is not visible in fax queue. I also observed that, when I am trying to send the fax from windows application then it works but anyhow it is getting failed when I am trying to send that from windows service.
I have following code :
Dim oFaxSvrType As Type = Type.GetTypeFromProgID("FaxcomEx.FaxServer")
Dim oFaxSvr As Object = Activator.CreateInstance(oFaxSvrType)
Dim oFaxDocType As Type = Type.GetTypeFromProgID("FaxcomEx.FaxDocument")
Dim sFaxServerName As String
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I observed that in task manager, rundll32.exe is getting started when I tried to run this code from windows application but this rundll32.exe is not getting started when I am trying to run this code from windows service. I am not getting any exception after executing this code but not able to see the fax on outbox. I ensured that allow service to interact with desktop in service console is checked for fax service and my own windows service.
I have a vb.net Windows application that calls a vb.net Web Service function. Both the vb.net application and Web Service have been in use for over 5 years and have worked well. The Windows App builds a text file consisting of a number of inserts into an Oracle table, followed by a call to an Oracle package. The Web Service call uploads the text file to the Web Server, loops through the statements in the text files and executes them. It then does a Select statement to put the resultant data in a string which is passed back to the calling program. We have both people on our local area network as well as external users where the call to the Web Server is over the internet.
The data string returned is the pricing for each of the lines inserted in the text file, separated by asterisks. Normal use of this call has anywhere from 1 to a few dozen lines, and the program works fine for this for both internal and external users.
Our problem right now is one external person is attempting to price a job with 491 individual line items. At first it would not price, whether the job was priced from a computer at the customers site or one of our internal people on the LAN. The problem turned out to be the timeout value was not long enough (it was set at 2 minutes, this job takes 5 minutes) so changing both the Timeout value in the Web Service call as well the httpRuntime executionTimeout value in the web.config file on the web server addressed the problem, but only for our internal users on the LAN. Our external customer wants to be able to price jobs of this size going forward, and I am at a loss as to why it errors on internet connected machines but not locally connected machines. Our customer is in New York, We are in Wisconsin, and I am able to recreate the error condition from my home computer.
The other thing is, if I create a VPN connection to our server from my computer at home, this job will price (again, it takes about 5 minutes) but if I disconnect the VPN connection, it gets an error after approximately 3 minutes, http 404: Not Found.The customer can otherwise price all of his other jobs with no problems, it's only this one, very large job that gets the error.
I want to send emails to all the followers of my website as soon as a new article is submitted.
PROBLEM: I want to send the emails asynchronously using threading or a windows service. I am not sure about windows service as I am using a shared hosting. But my real concern is that I want to send out the emails only when traffic is low in my site. How do I go about this? Ho do I check if traffic is low or not?
I am working on an email that someone will send from one of our main sites requesting an account password.I am using System.Net.Mail.MailMessage to create the email and then sending it using System.Net.Mail.SmtpClient.[code]
View 4 RepliesI need to pass a block of binary data to a web service. The object I'm passing is part of an API, so the Serialize/Deserialize/Byte functions are built-in to the API class. It is not explicitly XML Serializable as far as I can tell.
Unfortunately, whenever I pass the data to my web service, even as an encoded string, the service returns a "(400) Bad Request" error. If I remove the encoded data and replace the variable with a simple string, an appropriate response is returned, ruling out authentication, service errors, etc.
'Convert the byte array into an encoded string'
Dim unicodeEncoder As New UnicodeEncoding()
Dim serializedData As String = unicodeEncoder.GetString(myObject.Bytes).Trim()
Dim webAuth As New myWebService.ServiceSoapClient
MessageBox.Show(webAuth.VerifyFeatureSet(serializedData , "", "", "", ""))
how I can accomplish this? If I need to encode the data a different way, include a snippet for decoding it on the far end.
I have legacy hardware in our building that can accept commands via TCP as long as they have formatted XML in them. Using Wireshark, I have determined the proper format of what needs to be sent.
The problem: When using the original systems controller, I can look at the packet that is sent and see very specifically that there is a section for "eXtensible Markup Language" that has everything laid out properly. When I create my own TCP stream and send the same information, it gets sent as Hypertext Transfer Protocol text, and thus is not picked up.
My code is as follows:
Dim tcpClient As New System.Net.Sockets.TcpClient()
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
Dim clientdata As String = ""
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I used the tool about 3 years ago to create the classes for a webservice client to send or recieve arrays as complex data. Now i have to update these classes, since there are additional informations, that have to be exchanged. When i use the tool now with the new wsdl-files, it does'nt create the classes for complex data (structur, IGCTMObjectFactory), but only one class for simple data. In addition i have to establish a new client, that sends an array of complex data and receives another array of complex data. I tried to build the classes manually combining the client that sends an array with the client, that receives an array, but I failed.
View 3 RepliesThis emailing code wont seem to work in my program. I get an exception "The SMTP server requires a secure connection or the client was not authenticated. The server response was 5.5.1 authentication required."
Imports System.Net.Mail
Public Class emailStudent
Private Sub sendEmailButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sendEmailButton.Click
SendMail()
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I have a web application that has a web services as a web reference. The web main application has the connection string value stored in the web config.The web services consist of a web config file that store the value of connection string. Sometimes, I have different version of main web application that use different connection string but share the same web service. So I want the web services get the connection string value stored in the web config file of the main web application. How to do that?
View 3 RepliesWhat is the best way to check if a web service is up and active? I realize there are many different factors to this, but I would like to do something simple before sending data, like at the moment the proxy is constructed to see if the service is able to be connected. I am coding in vb.net.Is there even a best practice for this type of comm?
View 1 RepliesI have tested my code in a windows form project and it works great. so now I want it to run as a service.The problem i have is referring to "name" in my configuration string which is in app.config.
Dim settings As ConnectionStringSettings = _
ConfigurationManager.ConnectionStrings(Name)
(Name) is under-squiggled and message name is not declared, file IO functionality is available in the microsoft.visualbasic namespace.
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).
View 1 RepliesI want to write a program to do Markov chain, but my states are quite large. First of all I calculate all the transition probabilities and revenues for all states(1381860 total states), and store in a multidimensional array. Public RevArr(0 To 9, 0 To 750, 0 To 282) As Long
After that the iteration of markov chain should use these as inputs to calculate the steady-state probabilities. But when I try to run the main code I got this error.Exception of type 'System.OutOfMemoryException' was thrown.
The following is the declaration of second array I add just another dimension for storing all the iterations, but I get this error. Dim stateprob(IT + 1, 0 To 9, 0 To 750, 0 To 282) As single
I'm developing a Component. I'd like to do something when the component is dragged from the toolbox and dropped onto a form. For example display an about box.I don't want to annoy the developer by popping up an about box every time he refreshes his display or reloads the form.
View 6 Replies