gnutls_reauth - API function
int gnutls_reauth(gnutls_session_t session, unsigned int
- gnutls_session_t session
- is a gnutls_session_t type.
- unsigned int flags
- must be zero
This function performs the post-handshake authentication for TLS 1.3. The
post-handshake authentication is initiated by the server by calling this
function. Clients respond when GNUTLS_E_REAUTH_REQUEST
has been seen
while receiving data.
The non-fatal errors expected by this function are: GNUTLS_E_INTERRUPTED
, as well as GNUTLS_E_GOT_APPLICATION_DATA
called on server side.
The former two interrupt the authentication procedure due to the transport layer
being interrupted, and the latter because there were pending data prior to
peer initiating the re-authentication. The server should read/process that
data as unauthenticated and retry calling gnutls_reauth()
When this function is called under TLS1.2 or earlier or the peer didn't
advertise post-handshake auth, it always fails with
. The verification of the received peers
certificate is delegated to the session or credentials verification callbacks.
A server can check whether post handshake authentication is supported by the
client by checking the session flags with gnutls_session_get_flags()
Prior to calling this function in server side, the function
must be called setting
expectations for the received certificate (request or require). If none are
set this function will return with GNUTLS_E_INVALID_REQUEST
Note that post handshake authentication is available irrespective of the initial
negotiation type (PSK or certificate). In all cases however, certificate
credentials must be set to the session prior to calling this function.
on a successful authentication, otherwise a negative
Report bugs to <firstname.lastname@example.org>.
Home page: https://www.gnutls.org
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