Re: [libmicrohttpd] MHD_start_daemon with MHD_USE_SSL returns NULL

[Christian Grothoff]

Eh, you may need to give additional arguments to ensure configure finds
the cross-compiled GnuTLS library. I've not done this myself recently,
but in principle the --with-gnutls=FOO should suffice.

Anyway, you can read the configure output (and config.log) closely to
see if it worked / if this was truly the issue ;-).

Happy hacking!

Christian

On 12/4/20 6:04 PM, DJM-Avalesta wrote:
> Hi Christian,
> Thanks, I believe you are right.
>  
> How do I build (cross-compile) MHD with support for TLS?
> I have downloaded gnutls and I will figure out how to cross compile it,
> but how do I then link it in with my build of MHD?
> My configure command is currently this
> ./configure --host=arm CC=arm-none-linux-gnueabi-gcc
> I'm guessing I need to modify this for gnutls support?
>  
> Best regards
> David
> 
> 
> On 2020-12-04 3:54 pm, Christian Grothoff wrote:
> 
>> Maybe configure failed to find a sufficiently recent version of gnutls,
>> and so MHD was built without support for TLS? That'd be the simplest
>> explanation I can think of...
>>
>> Happy hacking!
>>
>> -Christian
>>
>> On 12/4/20 4:48 PM, DJM-Avalesta wrote:
>>> Hi
>>>
>>> I recently upgraded from libmicrohttpd 0.9.24 to version 0.9.71. Now I
>>> find that the following call to MHD_start_daemon (using SSL for HTTPS)
>>> no longer works, it just returns NULL.
>>>
>>> m_pHttpd = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_SSL
>>> | MHD_USE_DEBUG,
>>> port, NULL, NULL,
>>> CHttpWrapper::http_access_callback, (void *)g_StreamManagerArray,
>>> MHD_OPTION_HTTPS_MEM_KEY, key_pem,
>>> MHD_OPTION_HTTPS_MEM_CERT, cert_pem,
>>> MHD_OPTION_CONNECTION_TIMEOUT, HTTP_CLIENT_TIMEOUT,
>>> MHD_OPTION_NOTIFY_COMPLETED,
>>> CHttpWrapper::http_RequestCompletedCallback, NULL,
>>> MHD_OPTION_CONNECTION_LIMIT, 30,
>>> MHD_OPTION_END);
>>>
>>> My other similar calls to MHD_start_daemon without SSL still work fine.
>>>
>>> Could you tell me what has changed to stop this working?
>>>
>>> Best regards
>>>
>>> David
>>>

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