Hi Damon, I've tried to reproduce the issue, and for me MHD with HEAD responds with the correct non-zero content length. Maybe your code contains some subtle difference in how you call MHD_create_response_from_fd_at_offse64()? If not, some minimal example to reproduce the issue would be helpful.
happy hacking! Christian On 4/23/19 5:54 PM, Damon Earp wrote: > I started playing with newer versions of libmicrohttpd recently noticed > an issue with HEAD requests after bumping up the library version from > 0.9.51 to 0.9.63. > > Platform: Debian 9.8 amd64 > $ uname -a > Linux somehostname 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) > x86_64 GNU/Linux > $ sudo apt show libmicrohttpd12 > Package: libmicrohttpd12 > Version: 0.9.51-1 > > For both HEAD and GET requests I have been creating my response with > MHD_create_response_from_fd_at_offset64 and regardless of the method > type the Content-Length header was always set correctly. In other words, > I depend on libmicrohttpd to set the Content-Length header correctly for > both types of requests and never explicitly set it. > > Seeing as 0.9.51 is 2.5 years old I decided to try 0.9.63, I custom > built a shared library w/ a deb package for it > $ curl -LO --get > https://ftp.gnu.org/gnu/libmicrohttpd/libmicrohttpd-0.9.63.tar.gz > ... > $ ./configure --with-pic --prefix=/usr > --libdir=/usr/lib/x86_64-linux-gnu --enable-https --disable-curl > --disable-doc --disable-examples --enable-static=no > > After installing the new version of the library my HEAD requests started > responding with "Content-Length: 0", and GETs continued to have the > correct value. Other than that everything else is working without a hitch. > > If this is a bug, let me know if you need more information. Or if this > is my misunderstanding of the statement "The library does understand > HEAD and will only send the headers of the response and not the body, > even if the client supplied a body." please let me know. > > Thanks for this great library! > Damon
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