- Add new function to clear OpenSSL errors prior to any SSL_* call - Apply function where appropriate
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#### Description <!-- Describe your changes in detail --> This PR proposes similar fixes like https://github.com/kamailio/kamailio/pull/3607.
OpenSSL docs suggest that the error stack must be empty for [SSL_get_error() to work reliably](https://www.openssl.org/docs/man3.0/man3/SSL_get_error.html).
_Note: This has not been tested like previous PR and any feedback of course is appreciated._ You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3612
-- Commit Summary --
* cdp: Add and apply cdp_openssl_clear_errors function
-- File Changes --
M src/modules/cdp/cdp_tls.c (2) M src/modules/cdp/receiver.c (3) A src/modules/cdp/utils.c (21) M src/modules/cdp/utils.h (2)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3612.patch https://github.com/kamailio/kamailio/pull/3612.diff