> On 21 Mar 2012, at 13:11 Tim Bannister <isoma_at_jellybaby.net> napisał(a):
>
> I would try adding a seek callback – suggested by http://curl.haxx.se/mail/archive-2012-02/0032.html
>
>

I added these two lines:
curl_easy_setopt(pCurl, CURLOPT_SEEKFUNCTION, fseek);
curl_easy_setopt(pCurl, CURLOPT_SEEKDATA, pFile);

No effect.

After further investigation I can reproduce the problem on my PC while I download file from the same FTP server via local network. I just need to unplug Ethernet cable from my PC for a while.

I tested it twice downloading file of size 113 431 347 B. In the first try I got:
- 50 197 928 B transferred until cable was removed
- 50 722 216 B is the beginning of incorrect block
- 109 966 759 B is the end of incorrect block

In the second try I got:
- 32 015 504 B transferred until cable was removed
- 32 539 792 B is the beginning of incorrect block
- 113 280 143 B is the end of incorrect block

So in both cases the offset between restart of transfer and the beginning of incorrect block is 524 288 B!!!

Regards
Marcin

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Received on 2012-03-21