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There is a bug in that error message and I've proposed #8649 as a fix. However, even with the fix it will still likely say 0 out of 0 bytes. I'd guess, based on the ftpuploadresume example that you linked to, that your application is manually retrieving the existing size, reading the data to append via readfunction and actually requesting an append via CURLOPT_APPEND. I think in this case the upload total is not known by curl, only your application. @bagder seems that example is outdated, if libcurl always issues SIZE? Couldn't that example just use CURLOPT_APPEND, what is the benefit of manually parsing the size and using a read function in that example? |
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Hi @bagder. A very kind ping on this. I know how busy you are, but please take a look when you get a chance. |
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I presume that the example is written like this to figure out if it failed the upload because there was already a partial file there, and that's why it does the first check of the size. @ribtoks I don't know what you want from me on this. |
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As for the example, if it is outdated, I would also appreciate some information on what is the "current" way to achieve the same. Thank you, |
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I don't know if there's a bug because I don't know how to reproduce the problem you're asking about. I don't see how libcurl can know the I don't think the example is "outdated", it uses existing and functional APIs. It might however be a bit quirky and does more than what the name implies. |
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Yes, I do specify I know about the reproduction and I'm sorry about that. Sometimes conversation like this might trigger some thoughts so you can understand where can be the problem. But I fully understand and acknowledge that it's only a tiny chance of that without a minimal reproducible example. I myself am "debugging" this problem using only the user-provided logs of my app therefore I also cannot reproduce the problem on my computer. Thank you |
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Hello
I'm using libcurl to upload files via FTPS. My uploading code is somewhat based on ftpuploadresume.c, progressfunc.c and debugfunc.c examples (I know I need to provide a minimum viable example, but I'm debugging an error that a user of my app has and thus it's a bit complicated).
During the upload, judging from the logs, there's a connection timeout and after that progress function starts receiving
0asultotalparameter all of the time. What could be the reason of such behavior? Can it be a server issue or my misuse of libcurl API or libcurl bug?libcurl 7.79 with schannel, Windows 10 x64.
Here are the logs:
Thank you very much for any help.
Taras
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