Can't download more than two HTTP requests per host concurrently

[Philip D'Ath]

I have a content engine 510A. I have a problem that each individual user can only start two HTTP downloads concurrently. If they start a third session it blocks until one of the prior sessions is finished.

Note that this is occuring per user. Everyone can start up to two concurrent HTTP downloads. If one user blocks when starting a third download it does not affect anyone else.

For example:

* User clicks on a large HTTP file, it starts downloading

* User clicks on a second HTTP file, it starts downloading

* User clicks on a third HTTP it blocks until one of the two prior downloads finish.

The CE510A is running in WCCP mode. I've searched and I've searched, and just can't find anything with regard to this limit.

[jfoerster]

Hi,

I experienced that sort of limits with several browsers. Is this also happening if you connecti with you PC directly to the web-page?

Have you checked with a sniffertrace if the client wants to start a download or not?

Do you get an error message displayed from the cache or is it just that the download does not start?

Please give it a try with Firefox or any other browser.

Kind Regards,

Joerg

[Philip D'Ath]

The same problem happens with box IE and Firefox.

If I shut down the Content Engine (and WCCP drops it out) the problem goes away, so it is definately related to the Content Engine.

The client does not get an error message. It just sits there waiting for data. When one of the other downloads finishes it starts getting data.

[csco10260962 · Accepted solution]

Hi, you could try the following bit that i found on the web it works for me.

Their is an rfc for htpp 1.0 and 1.1 stating that nummber of concurrent downloads should not be more than 2. These rfc values can be overridden by changing the following keys for internet explorer users in their registries.

Registry Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.

Data Type: REG_DWORD [Dword Value] // Value Name: MaxConnectionsPer1_0Server

Setting for Value Data: [0000000a]

Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.

Data Type: REG_DWORD [Dword Value] // Value Name: MaxConnectionsPerServer

Setting for Value Data: [0000000a]

Exit Registry and Reboot

[Philip D'Ath]

That solved the problem!