[gnutls-devel] GnuTLS | use custom transport with gnutls (#673)
Development of GNU's TLS library
gnutls-devel at lists.gnutls.org
Mon Jan 14 11:20:39 CET 2019
New Issue was created.
Issue 673: https://gitlab.com/gnutls/gnutls/issues/673
first of all i want to thank all people involved in gnutls library
providing this critical piece of software. well done!
my question is regarding the possibility to use gnutls over custom
transport network. i went over all examples and i could not find a way
to use gnutls in this way. custom transport means that i have a small
library which provides a layer of abstraction of the i/o system.
therefore i have the possibility to use linux sockets or some other
specific hardware. i saw gnutls provides api for setting push/pull
functions which does the sending/receiving part but unfortunately
for me they expect similar blocking behavior as send/recv from linux.
the api i am referring to. i try to provide as scheme of the issue.
1. what gnutls has
|gnutls| <-> |linux sockets|
2. what gnutls has with cbs
|gnutls| <-> |callbacks with blocking behavior| <-> |linux sockets|
3. what i have
| appl | <-INTER-> | ct lib nb | <-> |linux sockets or other|
4. what i try to have
| appl | <-> |gnutls with cbs| <-INTER-> |ct lib nb| <-> |linux sockets or other|
the problem is that callbacks with blocking behavior complicate
unnecessarily my work because 'appl' interacts with 'ct lib nb'
on the interface 'INTER' in an asynchronous manner. is there a way to use
gnutls to drive tls in the described setup?
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