SSL_CTX_set_srp_cb_arg
SSL_CTX_set_srp_cb_arg(ctx, &srp_arg);
SSL_CTX_set_srp_cb_arg(ctx, &srp_callback_parm);
OSSL_DEPRECATEDIN_3_0 int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg);
SSL_CTX_set_srp_cb_arg(server_ctx, server_ctx_data);
SSL_CTX_set_srp_cb_arg(server2_ctx, server2_ctx_data);
SSL_CTX_set_srp_cb_arg(client_ctx, client_ctx_data);