Respond To FTP Upload / Have A Process Running All The Time In The Background
Oct 18, 2010
I want to be able to run an ASP.NET application when a file is upload via FTP. I understand how to use the filewatcher class to monitor the directory but I don't know where to put the code so it is always running.
Files will be uploaded once per month for each group of users of the system and the next time the user logs on after the upload I would like the application to reflect the new data. I don't want to check for a new upload when each user logs on because the processing could take a log time.
The uploads are automatic from multiple other computer systems and not done by any user.
The Application is hosted (by GoDaddy) so I don't have full control of the server.
Is there any way to have a process running all the time in the background and if so how? The application is written in VB.net.
My web application currently requires users to upload files, after which I take it for "further processing". This processing is VERY time consuming and can take a while before the control gets back to the user. I would like to run this in the background and not have the user wait until this completes.
I know this question has been asked in this very forum before but I'm not able to understand or I'm not able to proceed in the right direction. My understanding is there are a few ways I can go about this
a) create a BackgroundWorker process in my Global.asax file that will spawn a process and take care of the activity.
b) create a web service that will do the processing for me .. (how?)
I know that similar questions have been asked all over the place, but I'm having trouble finding one that relates directly to what I'm after.
I have a website where a user uploads a data file, then that file is transformed and imported into SQL. The file could be up to 50mb in size, and some times this process can take 30 minutes or sometimes even longer.
I realise I need to palm off the actual work to another process, and poll that process on the web page. I'm wondering what the best approach would be though? Being a web developer by trade, I'm finding all this new Windows Service stuff a bit confusing, and I just wanted somewhere to start.
So:
Can I do / should I being doing this with a windows service? if so, how?
Should I use WCF? If this runs under IIS, will I have problems with aspnet_wp.exe recycling and timing out my process?
clarifications
The data is imported into sql, there's no file distribution taking place.
If there is a failure, it absolutely MUST be reported to the user. The web page will poll every, lets say, 5 seconds, from the time the async task begins, to get the 'status' of the import. Once it's finished another response will tell the page to stop polling for status updates.
queries on final decision
ok, so as I thought, it seems that a windows service is the best idea. So as to HOW to get it to work, it seems the 'put the file there and wait for the service to pick it up' idea is the generally accepted way, is there a way I can start a process run by the service, without it having to constantly be checking a database table / folder? As I said earlier, I don't have any experience with Windows Services - I wondered if I put a public method in the service, can I call it somehow?
I needed to build website have gsm modem to send receive sms. I built all the things need to send receive messages etc, but cant figure out how to handle serial port that is, when postbacks occurs then how can I preserve my SMSSerialPort class object not to get initialized again and again causing me error saying 'Access denied. Serial port already in use'.
I am running huge time taking background process using a thread. Now Is there any way to show a javascript message whenever the background process completes.
I am using a user control to run the background process. How will I fire the javascript whenever the background process is complete which is unknown.
using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq;
[code]...
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.155.109:465Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.155.109:465Source Error:
I got server error when downloading pdf file from my webpage in asp.net."A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond in asp.net."
Error in File C:WINDOWSTEMPPOC1 {EFC98CD9-964C-4683-96BA-E02D634AF240}.rpt: The request could not be submitted for background processing.vb code:
Dim objReport As New CrystalDecisions.CrystalReports.Engine.ReportClass Dim location As String = context.Server.MapPath("../POC/POC1.rpt") objReport.FileName = location
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I have no problem when the web request comes from the same machine as the web server. But when the request originates across the network, I get a connection reset error about 1:30 or 2 minutes into waiting for a response.
I have set the in web.config for this application and put the application it's own application pool.
What else can I try?
Edit
The purpose of this page is to accept input from the user, calculate something, and send the result back to them. The long running calculation isn't something I can offload until a later time.
We need assistance with a portion of a major web application project scheduled to begin user testing within 10 days. The troublesome part of the code calls an external application when a button is clicked in Web page. When run from a command prompt or bat file, the external application, App.exe, runs perfectly producing the desired result. We created a test page and a small console application, Con.exe, to test the button code with a known quantity. The test application runs perfectly when the button in the Web page is clicked. However when we change the code to run App.exe instead of Con.exe, the App.exe code will not execute. We even tried creating a bat file to execute App.exe. Like the exe, the bat file executes from the command prompt or when double-clicked,but fails to run when called as a process from the button click event. Can anyone assist us? Here is the C# code: (.Net 3.5 sp1)
using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Diagnostics; namespace WebButtonTest public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { protected void Timer1_Tick(object sender, EventArgs e) { int checkNumber = 0; if (Session["checkNumber"] != null).......
Note:- i don't want to use updateprogress etc. control of ajax
on button click, long task(e.g thread) runs in my webpage for about 4-5 minutes.I want to show status to user either by a processing image through javascript(image must be shown in a certain part of page other part of page will remain intact) or an exact status of process if possible. i have tried a lot but all in vein.
Situation:I have an ASP .NET application that will search through docs using Lucene. I want to run the initial indexing (the index will be incremental after the initial run so there wont be need to index the whole directory again in future). Currently, I have about 5GB of docs (45000files).Problem: My application times out before completing the process. I have altered the TimeOut like this:HttpContext.Current.Server.ScriptTimeout = 200000;but it still does not complete the process.
Bit of a long shot, but is there a way in ASP.NET to dynamically get the website's URL [URL] when there is no HttpContext.Current available.
There is no HttpContext because the code is running in a background thread* (but under the ASP.NET AppDomain). I have a background process that sends emails out every evening, and needs to include the Web address, but I don't want to hard code it because of deployments and testing (it changes from [URL] to[URL] and then to [URL] for the live site).
I have a web application that initializes a third-party com application to perform few calculations. The website is deployed on a windows 2008 server (standard edition).
The problem I have been facing is that when I am logged in to the server (Remote Desktop Connection only as the server is not local), the com application initializes fine. But when I log-off or just close the remote desktop connection, the application doesn't get initialized. I have searched for a solution and found this: [URL]
I created the scheduled task as I didn't know how to create the windows service (the description at http://support.microsoft.com/kb/251192 is too confusing), and got the application to run when windows starts before even the user logs-in. But in even in this case, the application doesn't work unless the user is logged in and when I log-in, a second instance is created (with exactly the same user (admin)) and the original instance is never used.
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Yesterday I opened this solution in VS 2010 and converted it using the wizard. The solution built just fine, it runs just fine, BUT now all tests that access the db fail. I get the same error on every test (below).
"The runtime has encountered a fatal error. The address of the error was at 0x5b3b5ad7, on thread 0x19a4. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack."
In test classes that use ClassInitialize() and ClassCleanup() methods, all the tests fail. All tests fail with the same error, "The agent process was stopped while the test was running." Tests in test classes that do not utilize ClassInitialize() and ClassCleanup() (these tests do not hit the database) all pass.
When this was a VS2008 project all 153 tests passed. No changes have been made to these tests, other than converting the project to a VS2010 project.
I've been playing around with one test class. I commented out the ClassInitialize() and ClassCleanup() methods. I rewrote one test method and mocked everything. I tried running just that one test. I still got the "The agent process was stopped while the test was running" error.
Visual Studio 2010, version 10.0.30319.1 RTMRel
Test framework: integrated VS 2010 MS Test
Mocking framework: Not using mocking, I have a db that is destroyed and recreated in MyClassInitialize(), it is populated with known values. Yes, I know I should be using mocking, but this is an older app and it has not been updated with all of the new bells and whistles yet.
DB Framework: NHibernate
Target Framework is 3.5 for all projects in this solution except for the test project. The target framework is 4.0 for the test project. I tried changing it to 3.5, it will not let me.
"Attempted re-targeting of the project has been canceled. You cannot change the specified .NET framework or profile for a test project."
