Re: [liblo] cipher communication using DTLS

Hello,

I have made modifications of liblo (in a fork) to add DTLS communication.

You can find them in the branch "features" of this repository :
git://git.code.sf.net/u/arcorme/liblo

What it does :
- communication between client and server using DTLS protocol
- OSC formatted messages and bundles send using this client and server
- Configure option to add DTLS with --enable-dtls

Not included :
- timetag in bundles to wait before dispatching it (withdrawn from DTLS 
server due to socket question)

Not tested yet :
- Compilation for Windows
- Using ipv6


*Example :*

    int main(void)
    {
         lo_dtls_server_thread st = lo_dtls_server_thread_new(23232,
    "127.0.0.1");
         lo_dtls_server_thread_set_certificate(st, "server_01-cert.pem",
    "server_01-key.pem");
         lo_dtls_server_thread_set_authority(st, "CAlist.pem", "CApath/");
         lo_dtls_server_thread_set_CRL(st, "CRL.pem");

         lo_dtls_server_thread_add_method(st, NULL, NULL,
    generic_handler, NULL);

         lo_dtls_server_thread_start(st);

              lo_dtls_client client = lo_dtls_client_new(23232,
    "127.0.0.1");
              lo_dtls_client_set_certificate(client,
    "client_01-cert.pem", "client_01-key.pem");

              lo_dtls_client_send(client, "/a/b/c/d", "sfsff", "one",
    0.12345678, "three", -0.00000023001, 1.0);

              lo_dtls_client_free(client);

         sleep(5);

         lo_dtls_server_thread_free(st);

         return 0;
    }


*Question :*
As socket part is handled by OpenSSL lib, I did not merged DTLS in 
existing server but created separate lo_dtls_client and lo_dtls_server. 
What do you think about it, should it be more integrated in existing 
server or is it ok the way it is ?


Dominique


Le 19/12/2014 21:12, Stephen Sinclair a écrit :
> On Fri, Dec 19, 2014 at 4:51 AM, Dominique TESTELIN
> <dom...@li...> wrote:
>> Hello,
>>
>> I'm asked to add the DTLS protocol to the existing liblo library for my job.
>>
>> I was wondering if you would be interested by this functionnality ?
> I see no a priori reason not to at least have a look at it.  It could
> be interesting for some, I guess.  I recommend working on a "dtls"
> branch, and then we'll see if any discussion is warranted before
> merging.  If it adds any dependencies then I'd probably want to make
> it an optional thing at configuration.
>
> Steve
>
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