Tomasz Nowicki created PROTON-855:

             Summary: Add axTLS (embedded SSL) support to proton-c
                 Key: PROTON-855
             Project: Qpid Proton
          Issue Type: New Feature
          Components: proton-c
    Affects Versions: 0.9
         Environment: Platform independent
            Reporter: Tomasz Nowicki
             Fix For: 0.10

The axTLS embedded SSL project is a highly configurable client/server 
TLSv1 SSL library designed for platforms with small memory requirements. 
It comes with a small HTTP/HTTPS server and additional test tools. 
axTLS It's free! (BSD style licensing)

axTLS integration with proton is done on socket layer(posix layer). On the 
other hand OpenSSL integration with proton is done on the transport layer. To 
use both solutions we had to add two methods pn_ssl_recv i pn_ssl_send 
(daclared in include/ssl_io.h) which in openssl mode, without crypting, invoke 
native proton "pn_send" and "pn_receive (io.c)". In axTLS mode, those methods 
are replaced with proper axtls comunication methods. Those are defined in 
openssl.c, ssl_stub.c, axtls.c and located in src/ssl.
Methods pn_ssl_recv and pn_ssl_send replace original pn_send and pn_recv used 
in pni_connection_writable(pn_selectable_t *sel), 
pni_connection_readable(pn_selectable_t *sel) (connection.c).
Moreover we introduced new file axtls.c located in src/ssl. The file is an 
equivalent of openssl.c, implementing base ssl methods:  PN_EXTERN 
pn_ssl_domain_t *pn_ssl_domain( pn_ssl_mode_t mode);
PN_EXTERN void pn_ssl_domain_free( pn_ssl_domain_t *domain ); etc

Example of axTLS integration with ex ActiveMQ:

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