Re: [libmicrohttpd] libmicrohttpd 0.9.55 https and MHD_USE_EPOLL

[Evgeny Grin]

Hi Denis,

Thanks for confirming.

-- 
Best Wishes,
Evgeny Grin

On 11.09.2017 3:29, Denis Dowling wrote:
> Hi Evgeny,
> 
> I have checked my application with the latest git master version of 
> libmicrohttpd and your change fixes the epoll lockup problem.
> 
> Thanks for your help.
> 
> Regards,
> Denis
> 
> -----Original Message-----
> From: libmicrohttpd [mailto:address@hidden On Behalf Of Evgeny Grin
> Sent: Saturday, 9 September 2017 5:08 AM
> To: address@hidden
> Subject: Re: [libmicrohttpd] libmicrohttpd 0.9.55 https and MHD_USE_EPOLL
> 
> Hi Denis,
> 
> Problem was fixed in git master.
> Could you recheck on your side?
> 
> --
> Best Wishes,
> Evgeny Grin
> 
> On 05.09.2017 23:22, Evgeny Grin wrote:
>> 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
>>>
> 
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