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Re: Partial Downloads

From: Dejan Tolj <dejan1_at_gmail.com>
Date: Sat, 29 Jan 2011 20:57:21 -0500

Thanks for the tip. I never would have thought it was the proxy issue.
I set --noproxy <host> and the range param now finally works.

On 1/29/11, Dan Fandrich <dan_at_coneharvesters.com> wrote:
> On Sat, Jan 29, 2011 at 12:34:27PM -0500, Dejan Tolj wrote:
>> Hi Dan, to answer your question i had selinux disabled, and the source
>> was taken from the original downloads
>> http://curl.haxx.se/download/curl-7.21.3.tar.gz
>> not SRPM.
>>
>> I followed Kamils link and was able to install the latest curl on RHEL5.
>> However the range param still dosn't work fully, except "-XXXXX"
>>
>> $curl -v ftp://eeeeeee/aaaa.wmv -r 0-100000 > asdf
>>
>> * About to connect() to proxy 10.224.135.86 port 3128 (#0)
>
> A proxy? You never said anything about using a proxy. That changes the
> problem completely. Rather than a limitation of libcurl or the remote
> ftp server, it's most likely that this limitation is the fault of the
> proxy.
>
>> * Trying 10.224.135.86... % Total % Received % Xferd Average
>> Speed Time Time Time Current
>> Dload Upload Total Spent Left
>> Speed
>> 0 0 0 0 0 0 0 0 --:--:-- --:--:--
>> --:--:-- 0connected
>> * Connected to 10.224.135.86 (10.224.135.86) port 3128 (#0)
>> * Proxy auth using Basic with user 'user1'
>> > GET ftp://eeeeeee/aaaa.wmv HTTP/1.1
>> > Proxy-Authorization: Basic cmVkaGF0LXVwZGF0ZTp0YWhkZXI=
>> > Range: bytes=0-100000
>> > User-Agent: curl/7.21.3 (i686-redhat-linux-gnu) libcurl/7.21.3
>> > OpenSSL/0.9.8b zlib/1.2.3 c-ares/1.7.4 libidn/1.19 libssh2/1.2.7
>> > Host: eeeeeee:21
>> > Accept: */*
>> > Proxy-Connection: Keep-Alive
>> >
>> * HTTP 1.0, assume close after body
>> < HTTP/1.0 200 Gatewaying
>> < Server: squid/3.0.STABLE19
>> < Mime-Version: 1.0
>> < Date: Sat, 29 Jan 2011 17:27:43 GMT
>> < Content-Type: text/plain
>> < Content-Length: 254056909
>> < Last-Modified: Mon, 04 Oct 2010 20:40:46 GMT
>> < X-Cache: MISS from 10.224.135.86
>> < Via: 1.0 10.224.135.86 (squid/3.0.STABLE19)
>> * HTTP/1.0 proxy connection set to keep alive!
>> < Proxy-Connection: keep-alive
>
> As you can see from the logs, curl is requesting the correct Range:, but the
> proxy ignores it and serves the whole file. You could make an argument
> that libcurl should kill the connection after the first 100001 bytes, but
> for HTTP requests (including HTTP proxy requests), it currently passes the
> entire payload to the application.
>
>>>> Dan
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Received on 2011-01-30