This is a bugfix and security release. # Version 1.5.4 changes ## Security - When using a TLS enabled websockets listener with `require_certificate` enabled, the mosquitto broker does not correctly verify client certificates. This is now fixed. All other security measures operate as expected, and in particular non-websockets listeners are not affected by this. Closes [#996]. ## Broker - Process all pending messages even when a client has disconnected. This means a client that send a PUBLISH then DISCONNECT quickly, then disconnects will have its DISCONNECT message processed properly and so no Will will be sent. Closes [#7]. - $SYS/broker/clients/disconnected should never be negative. Closes [#287]. - Give better error message if a client sends a password without a username. Closes [#1015]. - Fix bridge not honoring `restart_timeout`. Closes [#1019]. - Don't disconnect a client if an auth plugin denies access to SUBSCRIBE. Closes [#1016]. ## Library - Fix memory leak that occurred if `mosquitto_reconnect()` was used when TLS errors were present. Closes [#592]. - Fix TLS connections when using an external event loop with `mosquitto_loop_read()` and `mosquitto_write()`. Closes [#990]. ## Build - Fix clients not being compiled with threading support when using CMake. Closes [#983]. - Header fixes for FreeBSD. Closes [#977]. - Use `_GNU_SOURCE` to fix build errors in websockets and getaddrinfo usage. Closes [#862] and [#933]. - Fix builds on QNX 7.0.0. Closes [#1018]. [#7]: https://github.com/eclipse/mosquitto/issues/7 [#287]: https://github.com/eclipse/mosquitto/issues/287 [#592]: https://github.com/eclipse/mosquitto/issues/592 [#933]: https://github.com/eclipse/mosquitto/issues/933 [#977]: https://github.com/eclipse/mosquitto/issues/977 [#983]: https://github.com/eclipse/mosquitto/issues/983 [#990]: https://github.com/eclipse/mosquitto/issues/990 [#996]: https://github.com/eclipse/mosquitto/issues/996 [#1015]: https://github.com/eclipse/mosquitto/issues/1015 [#1016]: https://github.com/eclipse/mosquitto/issues/1016 [#1018]: https://github.com/eclipse/mosquitto/issues/1018 [#1019]: https://github.com/eclipse/mosquitto/issues/1019