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Re: [mosquitto-dev] Request for support on mosquitto package 
You can make this question a lot simpler by leaving the lua
bindings out of it :)

Talk about how you would solve this problem with the libmosquitto
API, and what may or may not need to be added there, and _then_
we can easily add that to the lua bindings. (It's still great to
see other people using the lua bindings!)

Sincerely,
Karl Palsson


Emilio Lopez <eslopez92@xxxxxxxxx> wrote:
> Hi there!
> 
> I am a software engineer, and our company (Technicolor) is
> using the Eclipse mosquitto package. We think that this package
> is great! Unfortunately, due to customer requirements, there is
> a constraint to this package, and would like some
> insight/feedback. I have read through the man pages and the
> community forms but have come short.
> 
> *How we are using mosquitto:*
> We are using the LUA API library to the mosquitto package as an
> MQTT client. The version is *mosquitto-1.4.12*
> 
> *Problem:*
> Currently we are using the lua binded function
> mosquitto:tls_set(nil, caPath, certPath, keyFilePath) to
> leverage a secure connection. For security reasons, we need to
> use a custom made OpenSSL EVP_PKEY structure. That key is
> generated in a separate C module.
> 
> *Our Proposed Work Around:*
> Due to short term deadlines we thought of a work around.
> 
>    1. Create the EVP_PKEY struct in a separate C Shared Object file
>    2. Pass the key onto the LUA Stack (Using userdata)
>    3. Pass that key from our LUA application to the mosquitto LUA tls_set()
>    funciton (Which goes  back to the c libaries)
>    4. Used that passed EVP_PKEY and ignore the keyfile string value within
>    the mosquitto code.
> 
> 
> The above requires a custom made patch to the mosquitto code,
> which is not ideal for long term support. Our work around is
> temporary but we would like some advice on how to approach this
> particular issue. Perhaps an alternate solution is to have a
> ssl_ctx callback function, similar to libcurl?
> 
> Your time and input is greatly appreciated!
> 
> Thanks,
> Emilio
> 
> p.s. I tried registering with my company email
> (emilio.lopez@xxxxxxxxxxxxxxx) but never received a
> confirmation email.
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