Trait rustls::client::ClientSessionStore
source · [−]pub trait ClientSessionStore: Send + Sync {
fn set_kx_hint(&self, server_name: &ServerName, group: NamedGroup);
fn kx_hint(&self, server_name: &ServerName) -> Option<NamedGroup>;
fn set_tls12_session(
&self,
server_name: &ServerName,
value: Tls12ClientSessionValue
);
fn tls12_session(
&self,
server_name: &ServerName
) -> Option<Tls12ClientSessionValue>;
fn remove_tls12_session(&self, server_name: &ServerName);
fn insert_tls13_ticket(
&self,
server_name: &ServerName,
value: Tls13ClientSessionValue
);
fn take_tls13_ticket(
&self,
server_name: &ServerName
) -> Option<Tls13ClientSessionValue>;
}
Expand description
A trait for the ability to store client session data, so that sessions can be resumed in future connections.
Generally all data in this interface should be treated as highly sensitive, containing enough key material to break all security of the corresponding session.
set_
, insert_
, remove_
and take_
operations are mutating; this isn’t
expressed in the type system to allow implementations freedom in
how to achieve interior mutability. Mutex
is a common choice.
Required Methods
sourcefn set_kx_hint(&self, server_name: &ServerName, group: NamedGroup)
fn set_kx_hint(&self, server_name: &ServerName, group: NamedGroup)
Remember what NamedGroup
the given server chose.
sourcefn kx_hint(&self, server_name: &ServerName) -> Option<NamedGroup>
fn kx_hint(&self, server_name: &ServerName) -> Option<NamedGroup>
This should return the value most recently passed to set_kx_hint
for the given server_name
.
If None
is returned, the caller chooses the first configured group,
and an extra round trip might happen if that choice is unsatisfactory
to the server.
sourcefn set_tls12_session(
&self,
server_name: &ServerName,
value: Tls12ClientSessionValue
)
fn set_tls12_session(
&self,
server_name: &ServerName,
value: Tls12ClientSessionValue
)
Remember a TLS1.2 session.
At most one of these can be remembered at a time, per server_name
.
sourcefn tls12_session(
&self,
server_name: &ServerName
) -> Option<Tls12ClientSessionValue>
fn tls12_session(
&self,
server_name: &ServerName
) -> Option<Tls12ClientSessionValue>
Get the most recently saved TLS1.2 session for server_name
provided to set_tls12_session
.
sourcefn remove_tls12_session(&self, server_name: &ServerName)
fn remove_tls12_session(&self, server_name: &ServerName)
Remove and forget any saved TLS1.2 session for server_name
.
sourcefn insert_tls13_ticket(
&self,
server_name: &ServerName,
value: Tls13ClientSessionValue
)
fn insert_tls13_ticket(
&self,
server_name: &ServerName,
value: Tls13ClientSessionValue
)
Remember a TLS1.3 ticket that might be retrieved later from take_tls13_ticket
, allowing
resumption of this session.
This can be called multiple times for a given session, allowing multiple independent tickets to be valid at once. The number of times this is called is controlled by the server, so implementations of this trait should apply a reasonable bound of how many items are stored simultaneously.
sourcefn take_tls13_ticket(
&self,
server_name: &ServerName
) -> Option<Tls13ClientSessionValue>
fn take_tls13_ticket(
&self,
server_name: &ServerName
) -> Option<Tls13ClientSessionValue>
Return a TLS1.3 ticket previously provided to add_tls13_ticket
.
Implementations of this trait must return each value provided to add_tls13_ticket
at most once.