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Posted to users@tomcat.apache.org by Mark Stevens <ma...@googlemail.com> on 2007/07/18 14:45:42 UTC
PDF Delivery switching to byte ranges for slower connections.
Hi all,
I'm using the HTTP connector and am having a few issues delivering
PDF's from Tomcat 4.1 and was wondering if anyone could shed any
light.
The problem:
When requesting a PDF about 1.3MB in size, on the local LAN bypassing
the reverse proxy, it works fine, however when using wget to limit the
connection rate down to about 20kbps Tomcat appears to detect my
connection is slower, and attempts to send a chunk of the file rather
than the whole file, this can be seen in the access log as the request
size changes depending on my connection speed.
As soon I my request reaches the size reported for this specific
request in the access log, the connection closes, and my client
retries to get the file from the beginning.
Questions:
Can I turn this feature off and prevent Tomcat from attempting to
serve byte ranges depending on fast it calculates it will take the
client to download the file.
Is the Connector setting 'allowChunking=false' the way to go?, is
turning this off known to cause knock on effects HTML/Image delivery?
Thanks in advance.
Mark.
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Re: PDF Delivery switching to byte ranges for slower connections.
Posted by Mark Stevens <ma...@googlemail.com>.
Hi Ronald,
Thanks for the reply.
The files are coming out of a database via a servlet custom to the
Content Management System we are using.
Since raising this post I have discovered that a database setting for
the CMC limiting the amount of time an object can be streamed was
much to low, I now think this is the underlying cause of file delivery
being chunked.
I'll post an update after rolling out to live.
Many thanks again,
Mark.
On 18/07/07, Ronald Klop <ro...@base.nl> wrote:
> Is this static content or served by a custom servlet?
>
> If you can set the content-length of the response it shouldn't use chunked encoding.
> Ronald.
> PS: I'm not a Tomcat developer, so I could be wrong about this.
>
> On Wed Jul 18 14:45:42 CEST 2007 Tomcat Users List <us...@tomcat.apache.org> wrote:
> > Hi all,
> >
> > I'm using the HTTP connector and am having a few issues delivering
> > PDF's from Tomcat 4.1 and was wondering if anyone could shed any
> > light.
> >
> > The problem:
> >
> > When requesting a PDF about 1.3MB in size, on the local LAN bypassing
> > the reverse proxy, it works fine, however when using wget to limit the
> > connection rate down to about 20kbps Tomcat appears to detect my
> > connection is slower, and attempts to send a chunk of the file rather
> > than the whole file, this can be seen in the access log as the request
> > size changes depending on my connection speed.
> >
> > As soon I my request reaches the size reported for this specific
> > request in the access log, the connection closes, and my client
> > retries to get the file from the beginning.
> >
> > Questions:
> >
> > Can I turn this feature off and prevent Tomcat from attempting to
> > serve byte ranges depending on fast it calculates it will take the
> > client to download the file.
> >
> > Is the Connector setting 'allowChunking=false' the way to go?, is
> > turning this off known to cause knock on effects HTML/Image delivery?
> >
> >
> >
> > Thanks in advance.
> >
> > Mark.
> >
> > ---------------------------------------------------------------------
> > To start a new topic, e-mail: users@tomcat.apache.org
> > To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> > For additional commands, e-mail: users-help@tomcat.apache.org
> >
>
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Re: PDF Delivery switching to byte ranges for slower connections.
Posted by Ronald Klop <ro...@base.nl>.
Is this static content or served by a custom servlet?
If you can set the content-length of the response it shouldn't use chunked encoding.
Ronald.
PS: I'm not a Tomcat developer, so I could be wrong about this.
On Wed Jul 18 14:45:42 CEST 2007 Tomcat Users List <us...@tomcat.apache.org> wrote:
> Hi all,
>
> I'm using the HTTP connector and am having a few issues delivering
> PDF's from Tomcat 4.1 and was wondering if anyone could shed any
> light.
>
> The problem:
>
> When requesting a PDF about 1.3MB in size, on the local LAN bypassing
> the reverse proxy, it works fine, however when using wget to limit the
> connection rate down to about 20kbps Tomcat appears to detect my
> connection is slower, and attempts to send a chunk of the file rather
> than the whole file, this can be seen in the access log as the request
> size changes depending on my connection speed.
>
> As soon I my request reaches the size reported for this specific
> request in the access log, the connection closes, and my client
> retries to get the file from the beginning.
>
> Questions:
>
> Can I turn this feature off and prevent Tomcat from attempting to
> serve byte ranges depending on fast it calculates it will take the
> client to download the file.
>
> Is the Connector setting 'allowChunking=false' the way to go?, is
> turning this off known to cause knock on effects HTML/Image delivery?
>
>
>
> Thanks in advance.
>
> Mark.
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>