I have client side code that uses xmlhttp to make an asyncronous call to the
server. This call really churns the server and can take a couple of minutes
to finish. I have found that while this long call is processing, I can not
make any more requests to the server from the same session. I found this
because if I have two completely separate instances of IE, they will not
block each other, but if I do a File/New to spawn a separate instance of IE
that shares session, they will block each other.
Is this expected behavior? Is there a setting in IIS or on my web site that
I can change to increase the number of requests a client can have at a time?
14  2086 
That sounds like a threading issue.
Juan T. Llibre, asp.net MVP
aspnetfaq.com : http://www.aspnetfaq.com/
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=============== =============== =====
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:CE******** *************** ***********@mic rosoft.com... I have client side code that uses xmlhttp to make an asyncronous call to the
server. This call really churns the server and can take a couple of minutes
to finish. I have found that while this long call is processing, I can not
make any more requests to the server from the same session. I found this
because if I have two completely separate instances of IE, they will not
block each other, but if I do a File/New to spawn a separate instance of IE
that shares session, they will block each other.
Is this expected behavior? Is there a setting in IIS or on my web site that
I can change to increase the number of requests a client can have at a time?
IMO this is more the 2 connections limitation enforced by the browser.
Try : http://support.microsoft.com/kb/282402/EN-US/
--
Patrice
"Harry Keck" <Ha*******@disc ussions.microso ft.com> a écrit dans le message
de news: CE************* *************** **...icrosof t.com... I have client side code that uses xmlhttp to make an asyncronous call to
the
server. This call really churns the server and can take a couple of
minutes
to finish. I have found that while this long call is processing, I can
not
make any more requests to the server from the same session. I found this
because if I have two completely separate instances of IE, they will not
block each other, but if I do a File/New to spawn a separate instance of
IE
that shares session, they will block each other.
Is this expected behavior? Is there a setting in IIS or on my web site
that
I can change to increase the number of requests a client can have at a
time?
I believe that the default SessionStateSto reProviderBase class locks
the session while it is in use. Take a look here: http://tinyurl.com/gr3jh
I don't know if there's a way to disable this; if not, then you should
be able to substitute another provider which doesn't do locking. If
you do this, just remember that there's a reason for locking: you will
end up with a mess if multiple sessions use the same "slot".
-- jeff
the browser enforces a connection limit of 2, which can be overridden by a
registery entry. but asp.net ony allows one concurrent request per session.
-- bruce (sqlwork.com)
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:CE******** *************** ***********@mic rosoft.com... I have client side code that uses xmlhttp to make an asyncronous call to
the
server. This call really churns the server and can take a couple of
minutes
to finish. I have found that while this long call is processing, I can
not
make any more requests to the server from the same session. I found this
because if I have two completely separate instances of IE, they will not
block each other, but if I do a File/New to spawn a separate instance of
IE
that shares session, they will block each other.
Is this expected behavior? Is there a setting in IIS or on my web site
that
I can change to increase the number of requests a client can have at a
time?
I did the registy update, but that did not help. Is there really a one
request per session limit on asp.net? If so, that is definitely my problem.
Is there a way around this?
"bruce barker (sqlwork.com)" wrote: the browser enforces a connection limit of 2, which can be overridden by a
registery entry. but asp.net ony allows one concurrent request per session.
-- bruce (sqlwork.com)
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:CE******** *************** ***********@mic rosoft.com...I have client side code that uses xmlhttp to make an asyncronous call to
the
server. This call really churns the server and can take a couple of
minutes
to finish. I have found that while this long call is processing, I can
not
make any more requests to the server from the same session. I found this
because if I have two completely separate instances of IE, they will not
block each other, but if I do a File/New to spawn a separate instance of
IE
that shares session, they will block each other.
Is this expected behavior? Is there a setting in IIS or on my web site
that
I can change to increase the number of requests a client can have at a
time?
Yes, don't do File/New? Why are you doing this in the first place?
Jeff
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:5A******** *************** ***********@mic rosoft.com... I did the registy update, but that did not help. Is there really a one
request per session limit on asp.net? If so, that is definitely my
problem.
Is there a way around this?
"bruce barker (sqlwork.com)" wrote:
the browser enforces a connection limit of 2, which can be overridden by
a
registery entry. but asp.net ony allows one concurrent request per
session.
-- bruce (sqlwork.com)
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:CE******** *************** ***********@mic rosoft.com... >I have client side code that uses xmlhttp to make an asyncronous call to
>the
> server. This call really churns the server and can take a couple of
> minutes
> to finish. I have found that while this long call is processing, I can
> not
> make any more requests to the server from the same session. I found
> this
> because if I have two completely separate instances of IE, they will
> not
> block each other, but if I do a File/New to spawn a separate instance
> of
> IE
> that shares session, they will block each other.
>
> Is this expected behavior? Is there a setting in IIS or on my web site
> that
> I can change to increase the number of requests a client can have at a
> time?
No, that was just a test that I did to prove that the issue is linked to the
session. I have a single page that uses asyncronous xmlhttp calls to perform
a couple of actions simultaniously while allowing the user to have
interaction with the form the whole time.
Is there a way to increase this limit? I noticed a Page property called
enable SessionState. If I were to set that to ReadOnly for the page causing
the extra long asyncronous request, would that free up the session to be
requested more than once?
"Jeff Dillon" wrote: Yes, don't do File/New? Why are you doing this in the first place?
Jeff
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:5A******** *************** ***********@mic rosoft.com...I did the registy update, but that did not help. Is there really a one
request per session limit on asp.net? If so, that is definitely my
problem.
Is there a way around this?
"bruce barker (sqlwork.com)" wrote:
the browser enforces a connection limit of 2, which can be overridden by
a
registery entry. but asp.net ony allows one concurrent request per
session.
-- bruce (sqlwork.com)
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:CE******** *************** ***********@mic rosoft.com...
>I have client side code that uses xmlhttp to make an asyncronous call to
>the
> server. This call really churns the server and can take a couple of
> minutes
> to finish. I have found that while this long call is processing, I can
> not
> make any more requests to the server from the same session. I found
> this
> because if I have two completely separate instances of IE, they will
> not
> block each other, but if I do a File/New to spawn a separate instance
> of
> IE
> that shares session, they will block each other.
>
> Is this expected behavior? Is there a setting in IIS or on my web site
> that
> I can change to increase the number of requests a client can have at a
> time?
Oh, I see. Well, what if you put the different xmlhttp sources in different
applications on the server? I know, probably a bit of a hack, but at least
they would process their own sessions
Jeff
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:F2******** *************** ***********@mic rosoft.com... No, that was just a test that I did to prove that the issue is linked to
the
session. I have a single page that uses asyncronous xmlhttp calls to
perform
a couple of actions simultaniously while allowing the user to have
interaction with the form the whole time.
Is there a way to increase this limit? I noticed a Page property called
enable SessionState. If I were to set that to ReadOnly for the page
causing
the extra long asyncronous request, would that free up the session to be
requested more than once?
"Jeff Dillon" wrote:
Yes, don't do File/New? Why are you doing this in the first place?
Jeff
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:5A******** *************** ***********@mic rosoft.com... >I did the registy update, but that did not help. Is there really a one
> request per session limit on asp.net? If so, that is definitely my
> problem.
> Is there a way around this?
>
> "bruce barker (sqlwork.com)" wrote:
>
>> the browser enforces a connection limit of 2, which can be overridden
>> by
>> a
>> registery entry. but asp.net ony allows one concurrent request per
>> session.
>>
>> -- bruce (sqlwork.com)
>>
>>
>>
>> "Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
>> news:CE******** *************** ***********@mic rosoft.com...
>> >I have client side code that uses xmlhttp to make an asyncronous call
>> >to
>> >the
>> > server. This call really churns the server and can take a couple of
>> > minutes
>> > to finish. I have found that while this long call is processing, I
>> > can
>> > not
>> > make any more requests to the server from the same session. I found
>> > this
>> > because if I have two completely separate instances of IE, they will
>> > not
>> > block each other, but if I do a File/New to spawn a separate
>> > instance
>> > of
>> > IE
>> > that shares session, they will block each other.
>> >
>> > Is this expected behavior? Is there a setting in IIS or on my web
>> > site
>> > that
>> > I can change to increase the number of requests a client can have at
>> > a
>> > time?
>>
>>
>>
What I don't undestand is that if the user just reads the page and the
request is going on in the background you shouldn't hit any server or client
side limitation.
Could it be that the long running call is called multiple times ?
What if you try a bare bone page that just sends a quick asynchronous
request. Does it shows the same problem ?
What is the exact scenario ? I assume that opening another IE session was
just for testing but that the user just display the page and doesn't
navigate while the long running request runs ?
--
Patrice
"Harry Keck" <Ha*******@disc ussions.microso ft.com> a écrit dans le message
de news: F2************* *************** **...icrosof t.com... No, that was just a test that I did to prove that the issue is linked to
the
session. I have a single page that uses asyncronous xmlhttp calls to
perform
a couple of actions simultaniously while allowing the user to have
interaction with the form the whole time.
Is there a way to increase this limit? I noticed a Page property called
enable SessionState. If I were to set that to ReadOnly for the page
causing
the extra long asyncronous request, would that free up the session to be
requested more than once?
"Jeff Dillon" wrote:
Yes, don't do File/New? Why are you doing this in the first place?
Jeff
"Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
news:5A******** *************** ***********@mic rosoft.com... >I did the registy update, but that did not help. Is there really a one
> request per session limit on asp.net? If so, that is definitely my
> problem.
> Is there a way around this?
>
> "bruce barker (sqlwork.com)" wrote:
>
>> the browser enforces a connection limit of 2, which can be overridden
>> by
>> a
>> registery entry. but asp.net ony allows one concurrent request per
>> session.
>>
>> -- bruce (sqlwork.com)
>>
>>
>>
>> "Harry Keck" <Ha*******@disc ussions.microso ft.com> wrote in message
>> news:CE******** *************** ***********@mic rosoft.com...
>> >I have client side code that uses xmlhttp to make an asyncronous call
>> >to
>> >the
>> > server. This call really churns the server and can take a couple of
>> > minutes
>> > to finish. I have found that while this long call is processing, I
>> > can
>> > not
>> > make any more requests to the server from the same session. I found
>> > this
>> > because if I have two completely separate instances of IE, they will
>> > not
>> > block each other, but if I do a File/New to spawn a separate
>> > instance
>> > of
>> > IE
>> > that shares session, they will block each other.
>> >
>> > Is this expected behavior? Is there a setting in IIS or on my web
>> > site
>> > that
>> > I can change to increase the number of requests a client can have at
>> > a
>> > time?
>>
>>
>>
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