tlsext_server_build
if (!tlsext_server_build(s, SSL_TLSEXT_MSG_SH, &server_hello)) {
int tlsext_server_build(SSL *s, uint16_t msg_type, CBB *cbb);
if (!tlsext_server_build(s, tlsext_msg_type, cbb))
if (!tlsext_server_build(ctx->ssl, SSL_TLSEXT_MSG_EE, cbb))
if (!tlsext_server_build(ctx->ssl, SSL_TLSEXT_MSG_CR, cbb))
if (!tls13_cert_add(ctx, &cert_list, cpk->x509, tlsext_server_build))
if (!tlsext_server_build(ssl, SSL_TLSEXT_MSG_SH, &cbb)) {
if (!tlsext_server_build(ssl, SSL_TLSEXT_MSG_SH, &cbb)) {