Release 2.5.2
This release tweaks the reconnect code for TCP and DoT.
Packages are available at: https://dev.dns-oarc.net/packages/
For TCP, atomic operations are used to signal the need to reconnect from the receiving thread to the sending, as the sending is the one in charge of reconnecting.
This speeds up detection of connection lost which reduces the amount of lost queries on a disconnect.
This change does not affect DoT as much, as the SSL context shared between the threads are protected by a mutex.
But a bug was found in sendto() for DoT that could drop a query if the socket was busy sending.
The connect and reconnect socket events has been split into connecting, connected and reconnecting, reconnected. This is to report more correct reconnect events when it comes to DoT, because the connection can be lost while negotiating TLS.
Lastly, additional tests has been added for the network code.