DTLS_timer_cb, DTLS_set_timer_cb - Set callback for controlling DTLS timer duration

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       Licensed under the Apache License 2.0 (the "License").  You may not use this file except in compliance
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       <https://www.openssl.org/source/license.html>.

3.5.0                                              2025-06-04                            DTLS_SET_TIMER_CB(3SSL)

       This function sets an optional callback function for controlling the timeout interval on the DTLS
       protocol. The callback function will be called by DTLS for every new DTLS packet that is sent.

       The DTLS_set_timer_cb() function was added in OpenSSL 1.1.1.

       DTLS_timer_cb, DTLS_set_timer_cb - Set callback for controlling DTLS timer duration

       Returns void.

        #include <openssl/ssl.h>

        typedef unsigned int (*DTLS_timer_cb)(SSL *s, unsigned int timer_us);

        void DTLS_set_timer_cb(SSL *s, DTLS_timer_cb cb);