TLS.Exc
Access to exceptions
A read or write cannot be done because the descriptor is in non-blocking mode and would block. This corresponds to the Unix.EAGAIN
error but includes whether it was a read or write.
When the read or write is possible, the interrupted function should simply be again called.
These two exceptions are preferred by TLS providers.
The server requested a rehandshake (this exception is thrown in the client)
The client accepted or denied a rehandshake (this exception is thrown in the server). true
means acceptance.
A fatal error occurred (i.e. the session needs to be terminated). The string is a symbol identifying the error.