Hi Denis, Reproduced on CentOS 7 with current git master. Will look into it.
-- Best Wishes, Evgeny Grin On 05.09.2017 4:54, Denis Dowling wrote: > Hi Evgeny, > > It is actually the GET that is causing the problem. > > I have been able to duplicate as follows: > - Testing on CentOS7.3.1611. Everything up to date according to yum. > - Start with a clean unpack of libmicrohttpd-0.9.55 > - Edit the https_fileserver_example.c file and change the > MHD_USE_THREAD_PER_CONNECTION option to MHD_USE_EPOLL. Leave the other > options as they are. > - make https_fileserver_example > - In the same directory create 2 files of different sizes (1kB and 100kB) > dd if=/dev/urandom of=small.dat bs=1024 count=1 > dd if=/dev/urandom of=big.dat bs=1024 count=100 > - Start https_fileserver_example > ./https_fileserver_example 8888 > - In another window use wget to grab both files > wget --no-check-certificate https://localhost:8888/small.dat > wget --no-check-certificate https://localhost:8888/big.dat > > In my case the big.dat download freezes at 16384 bytes downloaded. If I > change from MHD_USE_EPOLL to MHD_USE_POLL it works fine. If I use > MHD_USE_AUTO it hangs as the system detects epoll() and uses it. > > Regards, > Denis > > -----Original Message----- > From: libmicrohttpd > [mailto:libmicrohttpd-bounces+denis.dowling=hsd.com...@gnu.org] On Behalf Of > Evgeny Grin > Sent: Monday, 4 September 2017 8:11 PM > To: libmicrohttpd@gnu.org > Subject: Re: [libmicrohttpd] libmicrohttpd 0.9.55 https and MHD_USE_EPOLL > > Hi Denis, > > Thanks for report! > Minimal example could help a lot. > > In the meantime, could you provide more details how do you process incoming > data? > Do you use MHD_USE_ERROR_LOG flag for daemon? What's the output on stderr? > > Also you could build MHD from source, modify definition of PUT_SIZE in > src/testcurl/test_large_put.c and run 'make check' > > -- > Wishes, > Evgeny > > On 04.09.2017 7:35, Denis Dowling wrote: >> Hi All, >> >> >> >> I recently updated some code to use version 0.9.55 of libmicrohttpd. >> After the change I noticed that larger (~100kB) HTTPS requests are >> blocking forever. During the change I swapped from using the option >> MHD_USE_POLL to MHD_USE_AUTO. I can see from an strace that >> libmicrohttpd is now using epoll() for the dispatching. If I switch >> back to MHD_USE_POLL then everything works fine again. If I use HTTP >> requests then everything is fine so it is something to do with the >> combination of HTTPS and epoll(). Other options are >> MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_SUSPEND_RESUME | MHD_USE_TLS. >> >> >> >> Has anyone seen anything similar? I am running on CentOS7.3. The same >> issue also appears on Redhat7.4. I will try to modify one of the >> example applications in libmicrohttpd to demonstrate the issue. > > ________________________________ > > > The information contained in this message and any attachments is strictly > confidential and intended solely for the use of the intended recipient(s). > The copyright in this communication belongs to (HSD). This message and any > attachments are confidential and may be subject to legal or other > professional privilege. Any confidentiality or privilege is not waived or > lost because this e-mail has been sent to you by mistake. If you have > received this transmission in error, please notify HSD on +61 3 9875 5900 > immediately and destroy all copies of this e-mail. The contents of this email > message may not be quoted, copied, reproduced or published in part or in > whole, without the written authorisation of HSD. >
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