Re: [NTG-context] Files on a server

On 05/17/2018 09:03 PM, Taco Hoekwater wrote:

...

On 17 May 2018, at 10:31, Taco Hoekwater wrote:

Anyway, perhaps someone can answer me this? I tried the ffi/curl code, and the network stuff works, but only when I comment out the write callback:

lcurl.curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ffi.cast("callback",discard));

If I dont, I get an error message from ffi that is:

unable to convert argument 3 from cdata to cdata<vararg> stack traceback: [C]: in function 'curl_easy_setopt' [ctxlua]:42: in function 'check_status' [ctxlua]:1: in main chunk

And I have no idea what that actually means or how to fix it?

FYI: fixed by updating luatex.

Hi Taco, Actually you don't really need to set the WRITEFUNCTION callback of libcurl. I only set it to the "discard" function which simply return the number of bytes it got, such that libcurl doesn't print the header information to stdout. You could also plug a different function in there if you wanted to process the headers. I will soon post an annotated version of the code with more proper error-checking on the list. Cheers, Henri

Best wishes, Taco

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