         const ASN1_OCTET_STRING *certHash,
                                           const OSSL_CMP_PKISI *si);
 typedef int (*OSSL_CMP_SRV_pollReq_cb_t)(OSSL_CMP_SRV_CTX *srv_ctx,
                                          const OSSL_CMP_MSG *req,
                                          int certReqId,
                                          OSSL_CMP_MSG **certReq,
                                          int64_t *check_after);
 int OSSL_CMP_SRV_CTX_init(OSSL_CMP_SRV_CTX *srv_ctx, void *custom_ctx,
  