Hi,

Thanks for your reply. I'm yet to investigate the network connection also I
can't get the server side logs now. From my analyzis I found there will be
no network problems happend because when i ran separate utility which
downloads 60GB file successfully. In my previous program, I do the
following process

1. Download the contents from remote url
2. In the call back function, data will be copied to another buffer which
size is 10 MB.
3. And once the buffer is filled 10 MB i'll send to another location.
4. Until the buffer become empty, curl will not download any contents.
5. Once buffer emptied curl starts downloading again.

I feel that, Curl is exited due to the sending to the another location time
is high. Is there any time out or delay for curl call back function. I'm
able to reproduce the issue by put sleep in the call back function. If
there is no delay in downloading content, everything works fine. I have
attaced my code.

Is there any option I need to set for this delayed response?

Thanks & Regards,
Ilavaa.

On Fri, Dec 21, 2012 at 6:02 PM, Daniel Stenberg <daniel_at_haxx.se> wrote:

> On Fri, 21 Dec 2012, ilavarasan M wrote:
>
> I'm using the latest version 7.28.1 to download the files. Im trying to
>> download the file which is 60 GB in size using cURL (C++). I'm able to get
>> around 17 GB of content and suddenly cURL come out with return code as
>> success and the http response code is 200. I try to debug and found that
>> curl comes out when it receiving the buffer size less than 16K in the
>> callback function. I'm getting random values like 4K or 13K. I can confirm
>> the issue is because of this.
>>
>
> No. That is just another sympthom, not the cause, of the problem. libcurl
> will provide you with as much data as it was able to read from the socket.
>
>
> Is there any way to fix this?
>>
>
> We don't know what your problem is only based on this. We don't know what
> the problem is!
>
> If I were to investigate that problem I'd A) check the server side logs
> for when the failure occurs and B) wireshark the network and investigate
> the TCP action at the time of the transfer stop.
>
> So curl_easy_perform() returns OK for this transfer? Is that an old-style
> HTTP close connection to indicate end of transfer?
>
>
> can i set the CURL_MAX_WRITE_SIZE
>>
>
> That's a compile-time value you can alter when you rebuild libcurl, but
> you changing that won't fix this problem...
>
> --
>
> / daniel.haxx.se
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