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From Tom Evans <tevans...@googlemail.com>
Subject Re: [users@httpd] Apache suddenly stops serving requests, recv() returns -1/errno=EAGAIN forever
Date Wed, 24 Jun 2009 14:57:47 GMT
On Wed, 2009-06-24 at 08:09 -0500, Elmar Krieger wrote:
> >> Dear Apache users,
> >>
> >> I'm forced to write yet another program that downloads HTTP files from
> >> an
> >> Apache server,
> > ...
> > Naive question : why would you do that, when there are probably at least
> > 10 existing libraries/utilities that already do that, and do it right ?
> >
> > I mean that downloading a file from a webserver is not just a matter of
> > opening a socket and reading bytes from it. There are such things as
> > status codes, HTTP headers, encoding, transfer-encoding, etc..
> > Do you really want to re-invent the wheel ?
> 
> I did of course start with code from the web, but that was not reliable
> enough. For example the download routines of Firefox and Safari are not
> satisfactory, because they also hang forever occasionally, and don't
> automatically restart the transfer with a new request. I need it 100%
> fool-proof.
> 
> Anyway, could you point me to the most reliable public domain (not GNU
> GPL) library you know, that compiles in Linux, Windows and MacOSX? Then I
> can compare the code..
> 
> And any idea under which circumstances a recv() from a socket connection
> to Apache can report -1/errno=EAGAIN for an hour without progress would
> still be appreciated. It's a server side problem, because it happens from
> clients all over the world ;-)
> 
> Thanks for your help,
> Elmar
> 
> 

I can download all sorts of large files from apache, it truly Works For
Me, so this certainly sounds like a naive client app rather than a
server side bug.

Any reason why you aren't using curl/libcurl/wget/libfetch? When there
are BSD licensed wheels out there, don't design your own..

Eg: 
http://curl.haxx.se/ (MIT)
http://curl.haxx.se/libcurl/ (MIT)
http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/libfetch/ (BSD)

Curl has a list of the FOSS http libraries:
http://curl.haxx.se/libcurl/competitors.html

HTH

Tom





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