allowLegacyUnsafeRenegotiation property Null safety
true, the SecurityContext will allow TLS renegotiation.
Renegotiation is only supported as a client and the HelloRequest must be
received at a quiet point in the application protocol. This is sufficient
to support the legacy use case of requesting a new client certificate
between an HTTP request and response in (unpipelined) HTTP/1.1.
NOTE: Renegotiation is an extremely problematic protocol feature and
should only be used to communicate with legacy servers in environments
where it is known to be safe.
abstract bool allowLegacyUnsafeRenegotiation;