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Posted to dev@hc.apache.org by Chris Brown <ch...@hotmail.com> on 2004/11/17 14:36:38 UTC
Real-time feedback about upload progress
Hi all,
It's funny that I found myself helping out with real-time downloading
feedback... I'm implementing it right now using HttpClient 3.0-alpha. BUT,
now I've stumbled across a problem... The reverse, in fact! I need to
provide feedback on UPLOADING!
RequestEntity doesn't seem to provide me with any way to see how much of a
stream has been sent to the server. In InputStreamRequestEntity, for
example, I can provide the input stream, and then execute the
Post/PutMethod... and have control again when it's all done.
Am I right so far? Is there no way to get feedback on how much data has
been sent?
Assuming that you CAN'T get this feedback, I consider this an important
feature to add for the 3.0 release (I'm not sure I can contribute anything
more than an idea at the moment...). Here's some ideas :
* modify RequestEntity so that can add a "Listener"-style interface for
notifying some class each time one byte or a block of bytes has been
transferred, something like
RequestEntity::addRequestEntityMonitor(...)
interface RequestEntityMonitor
{
void bytesTransferred(int numberOfBytes);
}
* create some sort of FilterInputStream that can wrap any other InputStream,
providing the above functionality. This would be more light-weight than the
above approach (no overhead for those that don't need this feature).
Can you confirm if I'm correct, and maybe let me know what you think of my
suggestions (helpful comments only please!).
- Chris
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Re: Real-time feedback about upload progress
Posted by Michael Becke <be...@u.washington.edu>.
Hi Chris,
You can also write you own RequestEntity that handles the progress
inside of writeRequest(OutputStream). Looking at things from the
writing end may be easier than wrapping an input stream.
Mike
On Nov 17, 2004, at 8:36 AM, Chris Brown wrote:
> Hi all,
>
> It's funny that I found myself helping out with real-time downloading
> feedback... I'm implementing it right now using HttpClient 3.0-alpha.
> BUT, now I've stumbled across a problem... The reverse, in fact! I
> need to provide feedback on UPLOADING!
>
> RequestEntity doesn't seem to provide me with any way to see how much
> of a stream has been sent to the server. In InputStreamRequestEntity,
> for example, I can provide the input stream, and then execute the
> Post/PutMethod... and have control again when it's all done.
>
> Am I right so far? Is there no way to get feedback on how much data
> has been sent?
>
> Assuming that you CAN'T get this feedback, I consider this an
> important feature to add for the 3.0 release (I'm not sure I can
> contribute anything more than an idea at the moment...). Here's some
> ideas :
>
> * modify RequestEntity so that can add a "Listener"-style interface
> for notifying some class each time one byte or a block of bytes has
> been transferred, something like
>
> RequestEntity::addRequestEntityMonitor(...)
> interface RequestEntityMonitor
> {
> void bytesTransferred(int numberOfBytes);
> }
>
> * create some sort of FilterInputStream that can wrap any other
> InputStream, providing the above functionality. This would be more
> light-weight than the above approach (no overhead for those that don't
> need this feature).
>
> Can you confirm if I'm correct, and maybe let me know what you think
> of my suggestions (helpful comments only please!).
>
> - Chris
>
> _________________________________________________________________
> MSN Hotmail : antivirus et antispam intégrés
> http://www.msn.fr/newhotmail/Default.asp?Ath=f
>
>
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Re: Real-time feedback about upload progress
Posted by Roland Weber <RO...@de.ibm.com>.
Hi Chris,
the FilterInputStream feels like the right approach to me.
Overriding the three read() methods shouldn't be too
tricky. The reset() method becomes interesting though.
But it's probably not used by HttpClient anyway, so no
problem for the intended scenario.
cheers,
Roland
"Chris Brown" <ch...@hotmail.com>
17.11.2004 14:36
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Subject
Real-time feedback about upload progress
Hi all,
It's funny that I found myself helping out with real-time downloading
feedback... I'm implementing it right now using HttpClient 3.0-alpha. BUT,
now I've stumbled across a problem... The reverse, in fact! I need to
provide feedback on UPLOADING!
RequestEntity doesn't seem to provide me with any way to see how much of a
stream has been sent to the server. In InputStreamRequestEntity, for
example, I can provide the input stream, and then execute the
Post/PutMethod... and have control again when it's all done.
Am I right so far? Is there no way to get feedback on how much data has
been sent?
Assuming that you CAN'T get this feedback, I consider this an important
feature to add for the 3.0 release (I'm not sure I can contribute anything
more than an idea at the moment...). Here's some ideas :
* modify RequestEntity so that can add a "Listener"-style interface for
notifying some class each time one byte or a block of bytes has been
transferred, something like
RequestEntity::addRequestEntityMonitor(...)
interface RequestEntityMonitor
{
void bytesTransferred(int numberOfBytes);
}
* create some sort of FilterInputStream that can wrap any other
InputStream,
providing the above functionality. This would be more light-weight than
the
above approach (no overhead for those that don't need this feature).
Can you confirm if I'm correct, and maybe let me know what you think of my
suggestions (helpful comments only please!).
- Chris
_________________________________________________________________
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