[#SSL_CTX_set_session_ticket_cb]
= SSL_CTX_set_session_ticket_cb
:mrdocs:

Register callbacks that attach and consume application data in TLS session tickets.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL_CTX_set_session_ticket_cb(
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    xref:SSL_CTX_generate_session_ticket_fn.adoc[SSL_CTX_generate_session_ticket_fn] gen_cb,
    xref:SSL_CTX_decrypt_session_ticket_fn.adoc[SSL_CTX_decrypt_session_ticket_fn] dec_cb,
    void* arg);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Server SSL context that will invoke the ticket callbacks.
| *gen_cb*
| Called before ticket creation (may call SSL_SESSION_set1_ticket_appdata), or NULL.
| *dec_cb*
| Called after ticket decryption with `status` and optional appdata, or NULL.
| *arg*
| Opaque userdata passed to both callbacks.
|===


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