[#SSL_CTX_set_allow_early_data_cb]
= SSL_CTX_set_allow_early_data_cb
:mrdocs:

Set a server callback that decides whether to accept TLSv1.3 early data for a context.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
SSL_CTX_set_allow_early_data_cb(
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    xref:SSL_allow_early_data_cb_fn.adoc[SSL_allow_early_data_cb_fn] cb,
    void* arg);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Server SSL context whose early‐data decision callback is set (copied to new SSL objects).
| *cb*
| Callback returning 1 to allow early data or 0 to reject it; NULL clears the callback.
| *arg*
| Opaque pointer passed to `cb` on each invocation.
|===


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