Default maxRequestLength given hard time to me!!

Monday, February 23, 2004

Previously one of our (GSA Client) clients file upload application is in ASP. Now we are planning to convert it into .Net. When I convert and upload a large file, I started getting errors, the same file I used to upload easily in ASP??
15 min I pulled my hair to solve this error! After some time I realized maxRequestLength in httpRuntime is causing the problem. Haa… some times brain won’t react early to identify the issues!!

If any one of you are using file upload functionality in your applications and if you ignored maxRequestLength settings, then please be sure to check it once. By default the maxRequestLength will be 4096KB (4 megabytes). After changing of that parameter, application started working well.

If you are more curious on it, here is the explanation:
At runtime the .Net framework checks the maximum size for the request object. This information will be obtained from the application's configuration file. In case, if this limit is not specified in web.config file, then it will be obtained from machine.config file. By default this limit is set to 4096KB. So by default you can upload only 4096KB file only! If you are interested to give a capability to the user to upload a file has greater size (> than 4096KB), then be sure to change 'maxRequestLength' value.

By the way, if you need here is the syntax:
<httpRuntime executionTimeout="90"
                 maxRequestLength="4096"
                 useFullyQualifiedRedirectUrl="false"
                  minFreeThreads="8"
                  minLocalRequestFreeThreads="4"
                  appRequestQueueLimit="100"/>

Hope it helps to some one!

Also if any of you are already implemented a functionality of uploading large files, please share your experience on performance etc. Bcz.. in my client case, he is uploading files size ranging from 40MB and we are keeping them in database!

If you have any suggestions.. Please share them!!

Also I found related content on it at support, it's @ support link:

16 Comments

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Khalid Shaikh - Monday, March 29, 2004 8:09:00 AM

Can you make your question more clear! So that I can helps you!

Sreedhar - Monday, March 29, 2004 9:52:00 AM

how maximum we can give maxRequestLength?

kanhu charan senapati - Monday, February 18, 2008 10:58:58 AM

You really should break up your file into smaller chunks, send them one at a time via a separate thread of execution, and reassemble the file on the server-side. That makes it easy to display a file transfer progress bar and it keeps the client from appearing hung during a long file transfer process.

Phillip H. Blanton - Monday, June 9, 2008 2:52:51 PM

why can't i find this in my web.config file

j - Friday, June 27, 2008 10:56:12 AM

Just add that line between tags.

BlackNeo - Monday, June 30, 2008 9:05:41 AM

thnx for your all help.god will be with you

mohdad ksuhar - Saturday, July 12, 2008 2:54:13 PM

Hi,
And thanks for your text.
Is it possible give an explanation about the other properties you noticed in httpRuntime tag.

Thanks
Sepid

sepid - Friday, September 26, 2008 7:24:47 PM

Hi,
Is there any performance issues to increase maxRequestLength in httpRuntime for asp.net application.

Rajsekhar...

Rajasekhar - Friday, December 5, 2008 6:23:16 AM

can yo explain different parametres of httpRuntime

Prabhakar - Saturday, June 6, 2009 6:45:01 AM

iam getting “Communication Exception was unhandled by user code” in silverlight.

Can anybody help me to resolve this problem.

ramesh - Thursday, June 10, 2010 11:48:42 AM

re: Default maxRequestLength given hard time to me!!
Amit..Soni

Amit..Soni - Monday, September 13, 2010 10:34:00 AM

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