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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: How i can get information about the downloading process?
Date Tue, 16 Nov 2004 09:00:07 GMT
On Mon, 2004-11-15 at 23:30 -0800, Gaspar wrote:
> Hi Mike,
> 
> Yes but i think that with the Response body only i can't know "How
> many
> bytes is downloaded already?". 
> 

Gaspar,
This is actually quite trivial. Just use
HttpMethod#getResponseBodyAsStream and you'll have a complete control
over the response retrieval process. 


> My question, Is possible to built-in this
> feature in the future? or is imposible due to HttpClient use only Java
> Sync
> IO?. 
> 

There's already a request for this feature. I'll be addressed in the
next major release of HttpClient (that is, 4.0):

http://issues.apache.org/bugzilla/show_bug.cgi?id=10815 

Hope this helps

Oleg

> 
> ----- Original Message -----
> From: "Michael Becke" <becke@u.washington.edu>
> To: "HttpClient Project" <httpclient-dev@jakarta.apache.org>
> Sent: Monday, November 15, 2004 8:06 PM
> Subject: Re: How i can get information about the downloading process?
> 
> 
> Hi Gaspar,
> 
> HttpClient does not support timing directly.  There is no built-in way
> to get status on the request progress.  As Chris has described the only
> real timing that can be done is with the response body.
> 
> Mike
> 
> On Nov 15, 2004, at 11:14 PM, Gaspar wrote:
> 
> > Hi Chris,
> >
> > First of all, thanks for your explanation, but maybe i don't explain
> > very
> > well what is my problem. Yes i know that this is the way to obtain this
> > information, but how you can did the algorithm that you describe if
> > the code
> > line (see below the number 1) don't return until it finish the download
> > process completely. do you understand now my doubt?. Maybe using
> > multithreading i can resolve this problem, but can i only resolve it
> > using
> > multithreading only?
> >
> > thanks in advance,
> > Gaspar
> >
> > Here is the code, see the line 1), is what i use to download the file.
> > ...
> >
> > HttpMethod method = new GetMethod(getURL().toString());
> >
> > ...
> >
> > // start the download process
> > line 1) statusCode = client.executeMethod(method);
> > ----- Original Message -----
> > From: "Chris Brown" <chris92250@hotmail.com>
> > To: <httpclient-dev@jakarta.apache.org>
> > Sent: Sunday, November 07, 2004 1:00 AM
> > Subject: RE: How i can get information about the downloading process?
> >
> >
> >> Hi Gaspar,
> >>
> >> If you use some of the approaches that let HTTPClient do all the hard
> >> work
> >> for you, you'll not have this feedback as far as I'm aware.
> >>
> >> But it's quite simple to get this information yourself.  If you open
> >> the
> >> connection and read data as a stream, you need to remember :
> >>
> >> * the time (e.g. System.currentTimeMillis()) you started as a "long"
> >> variable
> >>
> >> * the total number of bytes so far read as a "long" variable, updated
> >> each
> >> time you read some bytes from the stream
> >>
> >> * you can determine the average speed so far by dividing the number of
> > bytes
> >> downloaded by the time taken so far (see both points above); that's
> >> not
> >> necessarily your current speed
> >>
> >> * for the percentage remaining, you'll need to know in advance the
> >> size of
> >> what you're going to download (the HTTP response header
> >> "Content-Length"
> >> should help here, but you're not always going to get this
> >> information, and
> >> it's not always provided correctly by the server).
> >>
> >> You'll want multithreading no doubt, so make your "download" object
> >> expose
> >
> >> this information through "getter" methods.  You can then display this
> >> on
> > the
> >> command line, in a progress bar, or whatever.
> >>
> >> - Chris
> >>
> >>
> >>> From: "Gaspar" <gaspar@borderlessgroup.com>
> >>> Reply-To: "HttpClient Project" <httpclient-dev@jakarta.apache.org>
> >>> To: <httpclient-dev@jakarta.apache.org>
> >>> Subject: How i can get information about the downloading process?
> >>> Date: Sat, 6 Nov 2004 16:08:35 -0800
> >>>
> >>> Hi,
> >>>
> >>> My question is about how i can do with HttpClient, something that i
> >>> see
> > on
> >>> many download manager software.
> >>>
> >>> About the file that i'm downloading using HttpClient i want to get
> >>> this
> >>> information:
> >>>
> >>> - % of the file that is downloaded already.
> >>> - the size of what is downloaded already.
> >>> - the speed rate(b/s) of what is downloading.
> >>> - the time left to finish the download process.
> >>>
> >>> the downlaod manager that i use is ReGet Deluxe 3.3 and i want do
> > something
> >>> similar with HttpClient.
> >>>
> >>> Thanks in advance,
> >>> Gaspar
> >>>
> >>>
> >>>
> >>>
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> >>>
> >>
> >> _________________________________________________________________
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> >>
> >>
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> >
> >
> >
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> 
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