Re: Too many calls to the write callback

From: Henrik Holst via curl-library <curl-library_at_lists.haxx.se>
Date: Tue, 8 Feb 2022 19:45:07 +0100

Yes you are correct, I can see it with -v
< Transfer-Encoding: chunked

Well that answers that one, huge thanks!

/HH

Den tis 8 feb. 2022 kl 19:42 skrev Ray Satiro via curl-library <
curl-library_at_lists.haxx.se>:

> On 2/8/2022 12:42 PM, Henrik Holst via curl-library wrote:
> >
> > As you can see above recvfrom returns with 562 bytes and then I get 9
> > calls to write_callback from that, so the chunking is not due to the
> > network transfer but happens inside curl. Due to the varying sizes
> > this is not due to hitting some buffer limit (or we would not trigger
> > on 9 after 38) either.
> >
> > The output here is " write_callback='%.*s' = %lu\n", (int)realsize,
> > ptr, realsize);"
> >
> > I have not changed any of the buffer sizes and this is with libcurl 7.68
>
>
> I can only reproduce that behavior with chunked encoding, as expected.
> Each chunk is separate. Turn on verbose mode and check for chunked
> encoding.
>
> while true; do perl -e 'print ("HTTP/1.1 200 OK\r\nTransfer-Encoding:
> chunked\r\n\r\n3\r\nFOO\r\n3\r\nBAR\r\n0\r\n\r\n")' | nc -4l localhost
> 8000; done
>
>
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Received on 2022-02-08