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forums@mail.bg
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 Posted: Fri Jan 21, 2005 12:26 am Post subject: HTTP multipart downloads |
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how to do it?
is there some free/open source software or any examples
PS: multipart = for one file, few connections that downloads different
parts of the file
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Maarten Wiltink
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| Posted: Fri Jan 21, 2005 4:39 pm Post subject: Re: HTTP multipart downloads |
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<forums (AT) mail (DOT) bg> wrote
| Quote: | how to do it?
is there some free/open source software or any examples
PS: multipart = for one file, few connections that downloads
different parts of the file
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How are you making HTTP connections now? If you have a HTTP client
component with source and want to modify it to download ranges,
I think it's as simple as adding a header to the request that
specifies which bytes you want sent to you. That requires no more
than two properties (start and length, or begin and end) and most
likely a one-line modification to the request construction code.
That doesn't in itself make several connections at once, but it's
a start. You could build a component around it that does.
Groetjes,
Maarten Wiltink
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forums@mail.bg
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| Posted: Sat Jan 22, 2005 9:37 am Post subject: Re: HTTP multipart downloads |
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Maarten Wiltink wrote:
| Quote: | How are you making HTTP connections now? If you have a HTTP client
component with source and want to modify it to download ranges,
I think it's as simple as adding a header to the request that
specifies which bytes you want sent to you. That requires no more
than two properties (start and length, or begin and end) and most
likely a one-line modification to the request construction code.
That doesn't in itself make several connections at once, but it's
a start. You could build a component around it that does.
Groetjes,
Maarten Wiltink
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you are right, I found props ContentRangeStart/End in TidHTTP...
but.... I have another problem. I could not find any demo about simple
downloading with idHTTP. I am trying this code
S := TFileStream.Create('.tmptmp.rar', fmCreate );
try
H1.Get(URL, S);
finally
S.Free;
end;
....dont know is it right way to do this. I expected to get whole file,
but result was only portion of the file - with size of buffer. How to
get whole file?
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