Web Forms :: Store Same File Into Multiple Servers?
Jan 30, 2010
How do i store same file into multiple servers? My scenario is explained below Administrator module resides in production server ( "cccc" domain) which is accessible only within my company. Common module resides in DMZ and can be accessed by internet users. I have written a program to upload a .xls file to both the servers. My program is in administrator module and resides in cccc domain. I could upload the file to the server in my company but i cant upload it in DMZ. Following is the code to upload to ccc domain
FileInput.PostedFile.SaveAs(Server.MapPath("..TU" & ServerFileName))
Followins is the code to upload to dmz
FileInput.PostedFile.SaveAs("http://grtr/" & "/TU/" & ServerFileName) I will get the serverfilename using file upload control
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Mar 6, 2010
I see a ton of questions about uploading multiple files, but none about uploading a single file to multiple servers, so here goes... I have an ASP.NET app that will be running on two load balanced servers, and I would like to allow users to upload files and have them end up on both servers. What is the cleanest way to do this? I am using IIS 6 btw. Some ideas that come to mind are:
1) Use a virtual directory that points to some shared location that both servers can access. Will there be any access issues if the application runs at Network Service? I'm assuming the application will need to run as a user account that exists on the shared location machine. How should the permissions be set for this?
2) It would be nice if I could via jQuery post the request to both of my servers, referencing them by their port numbers. Even though the servers are on the same domain, this violates the same origin policy, right? Is there another solution I'm overlooking? How do other sites do this?
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Feb 7, 2011
We have 2 asp.net web servers working through the LoadBalancer that are accessible externally. Earlier, for all applications we did logging into DB. Now we have 1 more app that doesn't work with DB, it is used for 'messages transferring'. On TEST environment it does logging into files into a local folder.
If we deploy it "as is" to PROD we will have 2 separate log files... that is not very good idea. Connecting to DB just for logging doesn't seem reasonable too...
Possible solution could be store log file into a shared folder somewhere on another server.
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Mar 7, 2011
I have two applications with a single domain name ([URL] and [URL]). First one has been developed in .NET 2 and the other one with .NET 4. I have configured web.config as these steps:
1- I've set the same machine key for both of them.
2- I've set the coockie name.
3- I've set the domain name to "domain.com".
4- Also, I've set hardcoded coockie domain name to "domain.com" .
Everything was working fine when both of them were running on a single web server. Recently, I've been asked to move test.domain.com to another server. After moving, authentication ticket is not valid on the second server. I tested both of them on a single server again and everything was workinh fine, but in two servers users can't acces to test.domain.com. (Authentication Ticket is invalid)
Edited: The second server is a virtual (VMWare) server. I don't have any problem in physical servers. I checked the server's time to be synchronized. I also used fiddler to see if the server does not get the auth ticket and ther ticket is sent to the 2nd server. Note: Servers are located in different networks and maybe proxy or firewall causes this (I've no idea)
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Mar 25, 2010
Is it better to store images directly in a database or to just store the name of the file in the db and display that file? I would think that just storing the filename of the image would keep the db size low...
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Aug 30, 2010
How to upload a file to two different servers
Here is Code behind:
Protected Sub btnUpload_Click(ByVal sender
As Object, ByVal e As System.EventArgs)
Handles btnUpload.Click
Dim fileExt As String
fileExt = System.IO.Path.GetExtension(FileUpload1.FileName)
If (fileExt <> ".exe") Then........
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Oct 22, 2010
Below is the code I use to store file into database but there are a few problems.
1. couldn't store file larger than 4mb
2. couldn't store doc,docx,xlsx but only .txt
my table column are:
[code]....
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Mar 17, 2010
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May 17, 2010
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Feb 7, 2011
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Mar 28, 2011
A friend and I manage a large website for a company. The site is build using Visual Studio 2005 and is a series of nested web applications run inside a master application employing nested master pages. Currently we have to manually move files around folders and FTP them to various servers and I am looking for a way to be able to manage the deployment end of the site in a more automated fashion. I'd like to be able to work on my local version of a project and once I'm done be able to hit one button and publish the site to our internal testing server and then when testing is complete hit another button to deploy it to the live web servers. Right now we have to manually navigate the windows folders and copy pages, css files, images, swfs, etc and FTP them manually. The driver for this is that we have a new junior develop starting and want to remove the manual aspect in advance of him starting.
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Nov 10, 2010
We have a web application that is storiing all site data in HttpRuntime.Cache. We now need to deploy the application across 2 load balanced web servers. This being the case, each web server will have its own cache, which is not ideal because if a user requests data from webserver1 it will be cached, but there next request might go to webserver2, and the data that their previous request cached won't be available. Is it possible to use a shared-cache provider to share the HttpRuntime.Cache between the two web servers or to replecate the cache between them, so that the same cache will be available on both web servers?
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Jan 13, 2010
how can I synchronize sessionID over multiple second-domain servers? For example, I've got servers(you can log-in into server swarm at any of these), [URL], [URL], [URL] and if you log in at one of them, the login information (+anything else) should persist along them. How can I provide SessionID to other domains? (session itself is stored on sql server shared across the services).
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Apr 16, 2010
I have 2 front end servers and 2 back end servers. There is a registration form in my web application. The registration form uses a Microsoft Wizard control. Lets say the Wizard control has 4 steps. After the fourth step, users click "Finish" and I display the "Thank you Message". The way the request is routed between the 2 servers is round robin. So lets say till the fourth step, the response comes from server A. After the user clicks "Finish", lets say the response now comes from server B. After they click "Finish", I am trying to access some information in the Wizard control (like Name, address and so on). Because the servers are now switched, the data is lost (at least thats what I think is happening). So all entries in the wizard control are now blank and when I try to read those values, they are null.
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Dec 2, 2010
Boss comes in and demands that we change an existing dataload process written in .Net 2.0 to call stored procedures on two different servers rather than just one. In his mind (not a programmer) this should be a short overnight process. We have about 60 different SQL Commands that we need to change and test. Is there a simple way to do this that I can't think of? If there isn't we will use something like replication or database mirroring, which is my preference but is likely to get the cold shoulder from my boss, especially since I have never set these up before. A function that takes a SQLCommand as its argument and then iterates through as set of connections to execute the SQLCommand. Change all stored procs to call the same stored proc on a linked server.
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Mar 12, 2010
I have a bunch of EC2 servers that are load balanced. Some of the servers are not sharing session, and users keep getting logged in and out. How can I make all the server share the one session, possibly even using a partitionresolver solution
public class PartitionResolver : System.Web.IPartitionResolver
{
private String[] partitions;
public void Initialize()
{
// create the partition connection string table
// web1, web2
partitions = new String[] { "192.168.1.1" };
}
public String ResolvePartition(Object key)
{
String oHost = System.Web.HttpContext.Current.Request.Url.Host.ToLower().Trim();
if (oHost.StartsWith("10.0.0") || oHost.Equals("localhost"))
return "tcpip=127.0.0.1:42424";
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// hash the incoming session ID into
// one of the available partitions
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return ("tcpip=" + partitions[partitionID] + ":42424");
}
}
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Feb 8, 2011
So, I am the approach David Hayden posted on his blog [URL] to create a salt and hash the user's password by taking the user's raw password and the generated salt and using SHA1 to hash the value. I then store the salt and the hashed password in the database. zhe website is currently load balanced, so I was wondering if resulting hash value would be the same for both servers. Here is the snippet of code posted on David Hayden's blog:
private static string CreateSalt(int size)
{
//Generate a cryptographic random number.
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
byte[] buff = new byte[size];
rng.GetBytes(buff);
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return Convert.ToBase64String(buff);
}
private static string CreatePasswordHash(string pwd, string salt)
{
string saltAndPwd = String.Concat(pwd, salt);
string hashedPwd =
FormsAuthentication.HashPasswordForStoringInConfigFile(
saltAndPwd, "sha1");
return hashedPwd;
}
The reason I ask is that this code uses the code snippet: FormsAuthentication.HashPasswordForStoringInConfigFile(saltAndPwd, "sha1");
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Nov 16, 2010
I am trying to set up my web site on a stand alone server using Windows Server 2003 with IIS 6 which will access SQL server database (2008) on windows 2008 R2 server (also not in the domain) I am using form authentication and I have configured a custom identity account in IIS6. The local account is on both servers with same password and I have registered the account using aspnet_regiis.exe -ga The application pool in my iis6 has the custom local account set as the identity and my web.config file has the appropriate tags in the system.web element <identity impersonate="true" />
The problem is the local account does not seem to get passed to the sql server. Right now my iis settings are anonymous access (using the local acct vs isr) and no authentication specified under that - I did try Integrated and basic but it prompts for the username and password which I do not want. One article I read stated this: windows authentication does not support delegation (passing credentials from one server to another) and is limited to the one hop rule, only a primary token can be passed to a second server. windows
authentication on iis (all versions) gives the thread a secondary(impersonation) token which can not be used to access any network resouce
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Sep 22, 2010
We have a problem where in the user can download files from an email. A link that will redirect to a page where the code to download the file resides. Before the download the user needs to be logged in to the system for security. The problem is that sometimes for whatever reason when the user clicks the link the download dialog box does not appear and just a blank white page. It happens only on our staging environment where we have 3 servers.. We can't reproduce this in our dev and test env. where we only have one server.
Below is the actual code.
[Code]....
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Jul 13, 2010
I want to create a generic web.config file for different web servers in VB.NET. So, depending on the server configuration requirements, applications can retrieve all values from that generic configuration file.
Is this possible? How would I do this?
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Jun 17, 2010
I need to use images in my ASP.NET MVC application that are not included in the application, but are saved in the file system of the server under the c/documents folder.
How can I get these images?
I have a AppHelper class that looks like this and will use to get the path
[Code]....
then in my view i will use this the get that image
[Code]....
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Mar 2, 2010
We have a scenario using asp.net Forms Authentication in a web farm and need to setup identical <machinekey /> sections on each servers .config file.
Is it better to store the <machinekey /> section in machine.config rather then web.config? what's the advantages and disadvantages of each approach concerning security?
<machineKey validationKey="[keyhere]"
decryptionKey="[keyhere]" validation="SHA1" />
If its not secure enough, is there any way to encrypt <machinekey /> section like we encrypt our connectionsstring (with DPAPI)? (http://msdn.microsoft.com/en-us/library/ms998280.aspx)
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Feb 22, 2013
i convert my webpage into pdf file in vb.net
i want to save that pdf file in a specific folder in any drive (C: or D:)
how can i give a path in the below coding
Response.Buffer =True
Response.ContentType ="application/pdf"
Response.AddHeader("content-disposition", String.Format("attachment; filename={0}.pdf", Me.psno.Text))
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Dim sw AsNew StringWriter()
[Code].......
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Dec 8, 2012
how to store the 'multiple check box ' record in a database in a single column .. example like "hobbies" for this we have to select multiple check boxes
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Nov 5, 2010
The question: Is it possible to configure multiple SMTP servers or update the SMTP object server information at runtime?
Description of problem: The site I'm working on has a few pages which send emails. Our site is using Gmail so even though it's a custom domain our email is sent out though Gmail SMTP servers.
Some emails come from the system and some emails come from users in certain groups. I have an SMTP server configured with the admin email for the system e.g. admin@mysite.com This works fine and when I get the email it shows from admin@mysite.comOne of our user groups let's call it "groupA" has an email configured on our domain i.e. groupA@mysite.com When I send the email and specify a from address for the MailMessage object as groupA@mysite.com it still shows up in my outlook as coming from admin@mysite.com I did a little further testing and if I specify both the from address and the ReplyTo as groupA@mysite.com it will show as From=admin@mysite.com but when I choose reply in outlook it shows groupA@mysite.com My best guess is that Gmail is overwriting the From address with the SMTP user to prevent email spoofing.
I found this: http://www.systemnetmail.com/faq/4.1.aspx but it won't work for me since group A, B, and C all need to send emails from the same page.
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