1# Items to be removed from future curl releases 2 3If any of these deprecated features is a cause for concern for you, please 4email the curl-library mailing list as soon as possible and explain to us why 5this is a problem for you and how your use case can't be satisfied properly 6using a work around. 7 8## PolarSSL 9 10The polarssl TLS library has not had an update in over three years. The last 11release was done on [January 7 122016](https://tls.mbed.org/tech-updates/releases). This library has been 13superseded by the mbedTLS library, which is the current incarnation of 14PolarSSL. curl has supported mbedTLS since 2015. 15 16It seems unlikely that this library is a good choice for users to get proper 17TLS security and support today and at the same time there are plenty of good 18and updated alternatives. 19 20I consider it likely that the existing users of curl + polarssl out there are 21stuck on old curl versions and when they eventually manage to update curl they 22should also be able to update their TLS library. 23 24### State 25 26In the curl 7.65.2 release (July 17, 2019) the ability to build with this TLS 27backend is removed from the configure script. The code remains and can be 28built and used going forward, but it has to be manually enabled in a build (or 29the configure removal reverted). 30 31### Removal 32 33The support for PolarSSL and all code for it will be completely removed from 34the curl code base six months after it ships disabled in configure in a 35release. In the release on or near February 27, 2020. (possibly called curl 367.70.0). 37