+ private conversion functions that respect custom memory handlers
+ converage of more different example functions in 260-conversion-functions test package
This is a parameter to the getdns_context that tells the context how
much to pad queries that go out over TLS.
It is not yet functional in this commit, but the idea is to pad each
outbound query over TLS to a multiple of the requested blocksize.
Because we only have a set amount of pre-allocated space for dynamic
options (MAXIMUM_UPSTREAM_OPTION_SPACE), we limit the maximum
padding blocksize.
This is a simplistic padding policy. Suggestions for improved padding
policies are welcome!
https://tools.ietf.org/html/draft-ietf-dnsop-edns-client-subnet-04
Using the above spec, an intermediate resolver may forward a chunk of
the client's IP address to the authoritative resolver.
Setting edns_client_subnet_private to a getdns_context in stub mode
will indicate to the next-hop recursive resolver that the client
wishes to keep their address information private.
This reverts commit d0ff5d8fea.
It does need to be exposed and is used inderectly through GETDNS_MALLOC which uses MF_PLAIN which is an alias for plain_mem_funcs_user_arg.
- set and get functions are added.
- Existing transport functions retained for backwards compatibility.
- Basic combinations work as before, but underlying functional changes and cleanup are not complete yet...
- Context level options for timeouts and max_transactions_per_tcp_connection coming soon...