WebSphere HTTP Server - Request Size Limit

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Author Request Size Limit
NB000

2006-04-27, 8:21 am

Hi,

I am looking to understand what the maximum size of an HTTP Post Request Body can be ? Is there a limitation on the size as defined for the HTTP protocol ? Is this something that is configurable per Web Server setup & if so, how ?

Also, if this parameter is configurable, what would be the optimum value for the same would be (& how to derive it) ?

Lastly I am trying to understand the size to which I should limit my Http Post Requests to the web server (& how to derive the same for a given enviornment setup/configuration) ?

Thanks very much in advance

Navneet
Ben_

2006-04-27, 8:21 am

Hello,

(1)
Since you can upload files over HTTP it can be large (I already did a ~100
MB upload).

It's worth checking the RFC to see if it provision for a limitation.

(2)
I don't know if there is a setting to limit this.

Why would you want to ?


Ray McVay

2006-04-27, 8:21 am

NB000 wrote:
> I am looking to understand what the maximum size of an HTTP Post
> Request Body can be ? Is there a limitation on the size as defined
> for the HTTP protocol ? Is this something that is configurable per
> Web Server setup & if so, how ?


In my experience the file size is not a limitation, it's the length of
time it takes for the transfer. I.e. the end-to-end bandwidth. IIRC the
maximum time a transfer can take is 5 minutes. We can upload (to
Apache/WAS 3.5) about 150MB max over a 100 Mb line. Different browsers
respond in different ways to the timeout.
Dr.Ugo Gagliardelli

2006-05-29, 5:43 pm

NB000 wrote:
> Hi,
>
> I am looking to understand what the maximum size of an HTTP Post Request Body can be ? Is there a limitation on the size as defined for the HTTP protocol ? Is this something that is configurable per Web Server setup & if so, how ?
>
> Also, if this parameter is configurable, what would be the optimum value for the same would be (& how to derive it) ?
>
> Lastly I am trying to understand the size to which I should limit my Http Post Requests to the web server (& how to derive the same for a given enviornment setup/configuration) ?
>
> Thanks very much in advance
>
> Navneet

There's really no limitation on POST request imposed by the protocol.
The real limitation would be in the process behind the server. I wrote
an application that is capable to receive lots of GB (e.g. a full DVD
upload) from a POST request, but the server should not time-out and the
back-end application should not try to put a mime part in a program
variable.
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