eneral messages, error messages, and poll requests. All arguments except <i>srv_ctx</i> may be NULL. If a callback for some message type is not given this means that the respective type of CMP message is not supported by the server.</p>

<p>OSSL_CMP_SRV_CTX_get0_cmp_ctx() returns the <b>OSSL_CMP_CTX</b> from the <i>srv_ctx</i>.</p>

<p>OSSL_CMP_SRV_CTX_get0_custom_ctx() returns the custom server context from <i>srv_ctx</i> that has been set using OSSL_CMP_SRV_CTX_init().</p>

<p>OSSL_CMP_SRV_CTX_set_send_un