[#DTLS_set_timer_cb]
= DTLS_set_timer_cb
:mrdocs:

Set a callback that controls DTLS retransmission timer duration.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
DTLS_set_timer_cb(
    xref:SSL.adoc[SSL]* s,
    xref:DTLS_timer_cb.adoc[DTLS_timer_cb] cb);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| DTLS SSL connection whose timer callback is set.
| *cb*
| Callback invoked for each new DTLS packet; NULL restores the default doubling schedule.
|===


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