### Description When attempting to use either http_client or http_async_client with tls support enabled and openssl version 1.1.x, Kamailio crashes at startup. If openssl is reverted to version 1.0.2r as described in #1860, the issue does not occur. #### Reproduction On a system using openssl version 1.1.x (e.g. 1.1.1l) start Kamailio 5.5.2 with this config file for http_client failure: [kamailio.cfg.txt](https://github.com/kamailio/kamailio/files/7442436/kamail… To test http_async_client, load pv.so and http_async_client.so instead of http_client.so. #### Debugging Data [bt.txt](https://github.com/kamailio/kamailio/files/7442493/bt.txt) #### Log Messages [kam.log.txt](https://github.com/kamailio/kamailio/files/7442496/kam.log.txt) ### Additional Information * **Kamailio Version**: [kamversion.txt](https://github.com/kamailio/kamailio/files/7442506/kamversi… * **Operating System**: Linux 5.4.0-89-generic #100-Ubuntu SMP Fri Sep 24 14:50:10 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux [os.txt](https://github.com/kamailio/kamailio/files/7442509/os.txt) -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2912