tls_buffer_extend
ret = tls_buffer_extend(s->s3->alert_fragment, SSL3_ALERT_LENGTH,
ssret = tls_buffer_extend(s->s3->handshake_fragment, SSL3_HM_HEADER_LENGTH,
if ((ret = tls_buffer_extend(msg->buf,
if ((ret = tls_buffer_extend(msg->buf,
if ((ret = tls_buffer_extend(rec->buf,
if ((ret = tls_buffer_extend(rec->buf,
ssize_t tls_buffer_extend(struct tls_buffer *buf, size_t len,
ret = tls_buffer_extend(buf, et->extend_len, read_cb, &rs);